{"id":8040,"date":"2024-12-12T07:29:29","date_gmt":"2024-12-11T23:29:29","guid":{"rendered":"https:\/\/xzfastener.com\/?p=8040"},"modified":"2026-06-25T07:33:17","modified_gmt":"2026-06-24T23:33:17","slug":"class-12-9-alloy-steel-bolts-factory","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/es\/class-12-9-alloy-steel-bolts-factory\/","title":{"rendered":"Class 12.9 alloy steel bolts factory"},"content":{"rendered":"\n<style>\n.xz-wp-product-page-class-129-alloy-bolts-factory {\n  --xz-blue: #0b2f57;\n  --xz-sky: #eaf2f9;\n  --xz-line: #c9d9e8;\n  --xz-text: #17324d;\n  --xz-muted: #49647d;\n  --xz-white: #ffffff;\n  font-family: Arial, Helvetica, sans-serif;\n  color: var(--xz-text);\n  line-height: 1.65;\n  background: var(--xz-white);\n}\n.xz-wp-product-page-class-129-alloy-bolts-factory * {\n  box-sizing: border-box;\n}\n.xz-wp-product-page-class-129-alloy-bolts-factory a {\n  color: #0b5f9f;\n  font-weight: 700;\n  text-decoration: underline;\n  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#ffffff;\n}\n.xz-wp-product-page-class-129-alloy-bolts-factory .xz-note {\n  color: var(--xz-muted);\n  font-size: 14px;\n}\n@media (max-width: 900px) {\n  .xz-wp-product-page-class-129-alloy-bolts-factory .xz-hero {\n    background: var(--xz-blue);\n  }\n  .xz-wp-product-page-class-129-alloy-bolts-factory .xz-hero-grid,\n  .xz-wp-product-page-class-129-alloy-bolts-factory .xz-two-col {\n    grid-template-columns: 1fr;\n  }\n  .xz-wp-product-page-class-129-alloy-bolts-factory .xz-spec-grid {\n    grid-template-columns: repeat(2, 1fr);\n  }\n}\n@media (max-width: 560px) {\n  .xz-wp-product-page-class-129-alloy-bolts-factory .xz-spec-grid {\n    grid-template-columns: 1fr;\n  }\n}\n<\/style>\n\n<article class=\"xz-wp-product-page-class-129-alloy-bolts-factory\">\n  <section class=\"xz-hero\">\n    <div class=\"xz-container xz-hero-grid\">\n      <div>\n        <p class=\"xz-eyebrow\">High Strength Alloy Steel Bolts for Industrial Assembly<\/p>\n        <h1>Class 12.9 alloy steel bolts factory<\/h1>\n        <p>XZ Fastener manufactures Class 12.9 alloy steel bolts for demanding machinery, molds, dies, tooling fixtures, automation equipment, precision frames, and high clamp load assemblies. These high strength metric bolts are selected where tensile strength, thread accuracy, and controlled tightening are critical. Orders can be reviewed to ISO 898-1 mechanical property requirements and supplied under suitable dimensional standards such as ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, or buyer drawings. Black oxide, phosphate, plain oiled, zinc flake, and selected coatings can be reviewed according to finish, packing, inspection, and application requirement.<\/p>\n        <div class=\"xz-cta-row\">\n          <a class=\"xz-button\" href=\"https:\/\/xzfastener.com\/home\/contact-us\/\">Request a Quote<\/a>\n          <a class=\"xz-button xz-secondary\" href=\"https:\/\/xzfastener.com\/fastener-type\/bolts\/\">View Industrial Bolts<\/a>\n        <\/div>\n      <\/div>\n      <div class=\"xz-hero-card\">\n        <img decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20640%20440'%3E%3Crect%20width='640'%20height='440'%20fill='%23f4f8fc'\/%3E%3Cellipse%20cx='330'%20cy='346'%20rx='230'%20ry='30'%20fill='%23dbe7f2'\/%3E%3Cpath%20d='M128%20146l58-42h98l58%2042v82l-58%2042h-98l-58-42z'%20fill='%23dbe7f2'%20stroke='%230b2f57'%20stroke-width='12'%20stroke-linejoin='round'\/%3E%3Crect%20x='318'%20y='172'%20width='214'%20height='64'%20rx='14'%20fill='%23dbe7f2'%20stroke='%230b2f57'%20stroke-width='10'\/%3E%3Cpath%20d='M528%20174c42%2024%2042%2036%200%2060'%20fill='%23dbe7f2'%20stroke='%230b2f57'%20stroke-width='10'\/%3E%3Cpath%20d='M354%20184h160M354%20204h170M354%20224h160'%20stroke='%231f78b4'%20stroke-width='7'\/%3E%3Cpath%20d='M164%20150l44-32h54l44%2032M160%20178h146M160%20206h146'%20stroke='%23ffffff'%20stroke-width='8'%20opacity='0.7'%20fill='none'\/%3E%3Ccircle%20cx='235'%20cy='188'%20r='42'%20fill='none'%20stroke='%231f78b4'%20stroke-width='8'\/%3E%3Ctext%20x='320'%20y='414'%20font-family='Arial'%20font-size='23'%20font-weight='700'%20text-anchor='middle'%20fill='%230b2f57'%3EClass%2012.9%20Alloy%20Steel%20Bolt%3C\/text%3E%3C\/svg%3E\" alt=\"Class 12.9 alloy steel bolt illustration\">\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"xz-band\">\n    <div class=\"xz-container\">\n      <h2>Quick Specs<\/h2>\n      <div class=\"xz-spec-grid\">\n        <div class=\"xz-spec\">\n          <strong>Standard<\/strong>\n          ISO 898-1 mechanical property class with dimensional standards such as ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, or drawing requirements.\n        <\/div>\n        <div class=\"xz-spec\">\n          <strong>Strength<\/strong>\n          Class 12.9 high strength metric property class for critical clamp load applications.\n        <\/div>\n        <div class=\"xz-spec\">\n          <strong>Material<\/strong>\n          Heat treated alloy steel can be supplied according to order requirement.\n        <\/div>\n        <div class=\"xz-spec\">\n          <strong>Finish<\/strong>\n          Black oxide, plain oiled, phosphate, zinc flake, and selected coatings are available upon request.\n        <\/div>\n        <div class=\"xz-spec\">\n          <strong>Application<\/strong>\n          Tooling fixtures, molds, dies, automation equipment, machinery frames, and precision assemblies.\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container xz-two-col\">\n      <div>\n        <h2>What Buyers Should Know Before Sourcing Class 12.9 Alloy Steel Bolts<\/h2>\n        <p>Class 12.9 alloy steel bolts are selected when an assembly needs high tensile strength, precise thread fit, and reliable tightening control. When comparing <a href=\"https:\/\/xzfastener.com\/home\/products\/\">fastener products<\/a>, buyers should confirm the dimensional standard, diameter, pitch, length, thread length, head style, drive type, material, heat treatment, finish, and inspection requirements.<\/p>\n        <p>Because Class 12.9 bolts are high strength parts, finish selection must be reviewed carefully. Electroplated finishes may require process control due to hydrogen embrittlement concerns, while zinc flake, black oxide, phosphate, or plain oiled finishes may be more suitable for many industrial orders. Drawing-based dimensions or special threads can be reviewed as <a href=\"https:\/\/xzfastener.com\/products-category\/custom-non-standard-fasteners\/\">custom fasteners<\/a>.<\/p>\n      <\/div>\n      <div class=\"xz-panel\">\n        <h3>Factory Order Checklist<\/h3>\n        <ul>\n          <li>Confirm bolt type, head style, drive type, and dimensional standard.<\/li>\n          <li>Send diameter, pitch, length, and full or partial thread requirement.<\/li>\n          <li>Specify Class 12.9 mechanical property requirement.<\/li>\n          <li>Review finish choice for friction, corrosion, and embrittlement risk.<\/li>\n          <li>Provide packing method, carton weight, pallet plan, and inspection requirements.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"xz-band\">\n    <div class=\"xz-container\">\n      <h2>Common Purchasing Descriptions<\/h2>\n      <div class=\"xz-two-col\">\n        <div class=\"xz-panel\">\n          <ul>\n            <li>Class 12.9 alloy steel bolts, black oxide, metric coarse thread.<\/li>\n            <li>Class 12.9 socket head cap screws, ISO 4762, plain oiled finish.<\/li>\n            <li>Class 12.9 hex bolts, partial thread, phosphate finish, carton packing.<\/li>\n            <li>Class 12.9 flange bolts, zinc flake coating, factory order packing.<\/li>\n            <li>High strength metric alloy steel bolts sorted by size, finish, item code, and pallet label.<\/li>\n          <\/ul>\n        <\/div>\n        <div class=\"xz-panel\">\n          <p>For mixed factory purchasing lists, Class 12.9 alloy steel bolts may be ordered together with DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts. Buyers can combine these with <a href=\"https:\/\/xzfastener.com\/products-category\/standard-fasteners\/\">standard fasteners<\/a> for broader assembly supply.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container\">\n      <h2>Detailed Specifications Table<\/h2>\n      <div class=\"xz-table-wrap\">\n        <table>\n          <thead>\n            <tr>\n              <th>Specification Item<\/th>\n              <th>Typical Options<\/th>\n              <th>Buyer Notes<\/th>\n            <\/tr>\n          <\/thead>\n          <tbody>\n            <tr>\n              <td>Product Name<\/td>\n              <td>Class 12.9 alloy steel bolts<\/td>\n              <td>High strength metric bolts for demanding machinery and precision assemblies.<\/td>\n            <\/tr>\n            <tr>\n              <td>Mechanical Standard<\/td>\n              <td>ISO 898-1 property class 12.9<\/td>\n              <td>Mechanical properties should be matched to the application and tightening method.<\/td>\n            <\/tr>\n            <tr>\n              <td>Dimensional Standards<\/td>\n              <td>ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, buyer drawing<\/td>\n              <td>Confirm head type, drive type, thread length, and tolerance before order.<\/td>\n            <\/tr>\n            <tr>\n              <td>Thread<\/td>\n              <td>Metric coarse or fine thread, full or partial thread<\/td>\n              <td>Send diameter, pitch, length, and thread engagement requirement.<\/td>\n            <\/tr>\n            <tr>\n              <td>Material<\/td>\n              <td>Heat treated alloy steel<\/td>\n              <td>Compared with general <a href=\"https:\/\/xzfastener.com\/fastener-material\/carbon-steel\/\">carbon steel fasteners<\/a>, Class 12.9 bolts require closer material and heat treatment control.<\/td>\n            <\/tr>\n            <tr>\n              <td>Finish<\/td>\n              <td>Black oxide, plain oiled, phosphate, zinc flake, selected coatings<\/td>\n              <td>Coating process and hydrogen embrittlement risk should be reviewed for high strength bolts.<\/td>\n            <\/tr>\n            <tr>\n              <td>Inspection<\/td>\n              <td>Dimension check, thread gauge, hardness, tensile test, surface inspection<\/td>\n              <td>Inspection documents can be arranged according to purchase order requirement.<\/td>\n            <\/tr>\n            <tr>\n              <td>Packing<\/td>\n              <td>Bulk carton, small box, bag, wooden case, pallet, or assembly kit<\/td>\n              <td>Labels, barcodes, carton weight, and pallet layout are available upon request.<\/td>\n            <\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p class=\"xz-note\">Final specification should be confirmed by purchase order, drawing, sample, or project requirement before production arrangement.<\/p>\n    <\/div>\n  <\/section>\n\n  <section class=\"xz-band\">\n    <div class=\"xz-container xz-two-col\">\n      <div>\n        <h2>Material and Grade Explanation<\/h2>\n        <p>Class 12.9 alloy steel bolts are heat treated to achieve very high metric property class performance. They are commonly used in tooling, dies, molds, high load clamps, machine slides, automation equipment, and compact assemblies where lower strength bolts may not provide enough clamp load or fatigue resistance.<\/p>\n        <p>Buyers should match Class 12.9 bolts with suitable mating threads, nuts, washers, and tightening methods. Over-specifying bolt strength without checking the assembly can damage softer mating parts. For dimensional comparisons among metric standards, buyers can review the <a href=\"https:\/\/xzfastener.com\/din-iso-fastener-standards-complete-overview-for-industrial-buyers\/\">DIN and ISO fastener standards guide<\/a> before finalizing the order list.<\/p>\n      <\/div>\n      <div class=\"xz-panel\">\n        <h3>Grade Selection Notes<\/h3>\n        <ul>\n          <li>Class 12.9 is used for high strength metric assemblies with controlled tightening.<\/li>\n          <li>Correct thread engagement and mating material strength are important.<\/li>\n          <li>Socket head, hex head, and flange bolt styles can be reviewed by drawing.<\/li>\n          <li>Finish choice should be reviewed for friction, storage, corrosion, and embrittlement risk.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container\">\n      <h2>Surface Finish Selection Guide<\/h2>\n      <div class=\"xz-two-col\">\n        <div class=\"xz-panel\">\n          <h3>Common Factory Finishes<\/h3>\n          <p>Black oxide with oil is frequently selected for Class 12.9 alloy steel bolts used in machinery and tooling environments. Plain oiled and phosphate finishes can also be supplied where the buyer needs controlled assembly behavior, short-term storage protection, or further processing according to order requirement.<\/p>\n        <\/div>\n        <div class=\"xz-panel\">\n          <h3>Corrosion-Oriented Finishes<\/h3>\n          <p>Zinc flake and selected coating systems can be reviewed when corrosion resistance is required for high strength alloy steel bolts. Electroplated zinc should be discussed carefully due to embrittlement risk. Related <a href=\"https:\/\/xzfastener.com\/products-category\/various-coated-fasteners\/\">coated fasteners<\/a> can be quoted together when a project requires consistent finish planning across multiple items.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"xz-band\">\n    <div class=\"xz-container xz-two-col\">\n      <div>\n        <h2>Manufacturing and Quality Control<\/h2>\n        <p>Class 12.9 alloy steel bolts are produced through material preparation, forming or machining where applicable, thread rolling, heat treatment, surface finishing, inspection, and packing. Factory control focuses on mechanical property, thread fit, dimensional accuracy, head geometry, surface condition, and batch traceability according to order requirement.<\/p>\n        <p>For orders that include related <a href=\"https:\/\/xzfastener.com\/fastener-type\/bolts\/\">industrial bolts<\/a>, nuts, and washers, XZ Fastener can help organize item-code sorting, mixed cartons, pallet labels, and inspection documents. This supports tooling maintenance, machinery assembly, and distributor replenishment with fewer receiving errors.<\/p>\n      <\/div>\n      <div class=\"xz-panel\">\n        <h3>Typical Inspection Points<\/h3>\n        <ul>\n          <li>Head dimensions, shank length, thread length, and drive detail review.<\/li>\n          <li>Thread gauge inspection for go and no-go fit.<\/li>\n          <li>Hardness and mechanical property review according to order requirement.<\/li>\n          <li>Surface finish appearance and coating consistency inspection.<\/li>\n          <li>Packing quantity, carton label, and pallet plan verification before shipment.<\/li>\n        <\/ul>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container\">\n      <h2>Applications<\/h2>\n      <div class=\"xz-two-col\">\n        <div class=\"xz-panel\">\n          <ul>\n            <li>Molds, dies, tooling plates, clamping systems, and fixture assemblies.<\/li>\n            <li>Automation equipment, precision machinery, guides, slides, and equipment frames.<\/li>\n            <li>High load brackets, press equipment, hydraulic systems, and maintenance programs.<\/li>\n            <li>Factory replenishment, distributor stock, MRO kits, and assembled fastener sets.<\/li>\n          <\/ul>\n        <\/div>\n        <div class=\"xz-panel\">\n          <p>Class 12.9 alloy steel bolts are often paired with suitable nuts, threaded holes, and bearing surfaces. Where additional load distribution is needed, XZ Fastener can review matching <a href=\"https:\/\/xzfastener.com\/fastener-type\/washers\/\">flat washers<\/a> and related components according to drawing and installation conditions.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <section class=\"xz-band\">\n    <div class=\"xz-container\">\n      <h2>How to Get a Faster Quotation<\/h2>\n      <p>To receive a clear quotation for Class 12.9 alloy steel bolts, send the standard or drawing, head type, diameter, pitch, length, thread length, finish, quantity, packing method, delivery destination, and inspection requirements. If the bolts will be used in tooling, high clamp load, or precision machinery, include application notes and any required test reports.<\/p>\n      <p>For factory orders, <a href=\"https:\/\/xzfastener.com\/home\/contact-us\/\">contact XZ Fastener<\/a> with a structured size list and preferred packing details. Information such as carton weight, item labels, pallet size, coating requirement, and inspection documents helps confirm production and shipment planning more efficiently.<\/p>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container\">\n      <h2>FAQ<\/h2>\n      <details>\n        <summary>What does Class 12.9 mean for alloy steel bolts?<\/summary>\n        <p>Class 12.9 is a high strength metric property class. It indicates very high tensile strength and is typically used for demanding mechanical assemblies where correct tightening and mating material strength are important.<\/p>\n      <\/details>\n      <details>\n        <summary>Which bolt types can be supplied in Class 12.9?<\/summary>\n        <p>Class 12.9 can be reviewed for socket head cap screws, hex bolts, flange bolts, and drawing-based bolts according to order requirement. The dimensional standard or drawing should be provided in the inquiry.<\/p>\n      <\/details>\n      <details>\n        <summary>What material is used for Class 12.9 alloy steel bolts?<\/summary>\n        <p>Class 12.9 bolts are typically made from heat treated alloy steel. Material and heat treatment can be reviewed according to purchase order and application requirement.<\/p>\n      <\/details>\n      <details>\n        <summary>Which finishes are suitable for Class 12.9 alloy steel bolts?<\/summary>\n        <p>Black oxide, plain oiled, phosphate, zinc flake, and selected coatings can be reviewed. Electroplated finishes should be discussed carefully because high strength bolts may be sensitive to hydrogen embrittlement risk.<\/p>\n      <\/details>\n      <details>\n        <summary>Can Class 12.9 alloy steel bolts be supplied in fine thread?<\/summary>\n        <p>Metric coarse and fine thread options can be supplied according to order requirement. Please provide diameter, pitch, length, and thread length when requesting a quotation.<\/p>\n      <\/details>\n      <details>\n        <summary>What inspection documents can be requested?<\/summary>\n        <p>Dimension inspection, thread gauge check, hardness report, mechanical property report, coating inspection, and packing verification can be arranged according to purchase order requirement.<\/p>\n      <\/details>\n    <\/div>\n  <\/section>\n\n  <section>\n    <div class=\"xz-container\">\n      <div class=\"xz-cta\">\n        <h2>Send Your Class 12.9 Alloy Steel Bolt Inquiry<\/h2>\n        <p>For a faster quotation, send your size list, standard or drawing, finish, quantity, packaging method, delivery destination, and inspection requirements. XZ Fastener can review factory order details, bolt type, coating selection, carton labels, pallet plan, mechanical testing, and any drawing-based requirements before production or shipment arrangement.<\/p>\n        <div class=\"xz-cta-row\">\n          <a class=\"xz-button\" href=\"https:\/\/xzfastener.com\/home\/contact-us\/\">Request a Quote<\/a>\n          <a class=\"xz-button xz-secondary\" href=\"https:\/\/xzfastener.com\/home\/products\/\">Browse Fastener Products<\/a>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <script type=\"application\/ld+json\">\n  {\n    \"@context\": \"https:\/\/schema.org\",\n    \"@graph\": [\n      {\n        \"@type\": \"Organization\",\n        \"@id\": \"https:\/\/xzfastener.com\/#organization\",\n        \"name\": \"XZ Fastener\",\n        \"url\": \"https:\/\/xzfastener.com\/\",\n        \"brand\": {\n          \"@type\": \"Brand\",\n          \"name\": \"XZ Fastener\"\n        },\n        \"contactPoint\": {\n          \"@type\": \"ContactPoint\",\n          \"contactType\": \"sales\",\n          \"url\": \"https:\/\/xzfastener.com\/home\/contact-us\/\"\n        }\n      },\n      {\n        \"@type\": \"BreadcrumbList\",\n        \"@id\": \"https:\/\/xzfastener.com\/class-12-9-alloy-steel-bolts-factory\/#breadcrumb\",\n        \"itemListElement\": [\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 1,\n            \"name\": \"Home\",\n            \"item\": \"https:\/\/xzfastener.com\/\"\n          },\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 2,\n            \"name\": \"Products\",\n            \"item\": \"https:\/\/xzfastener.com\/home\/products\/\"\n          },\n          {\n            \"@type\": \"ListItem\",\n            \"position\": 3,\n            \"name\": \"Class 12.9 alloy steel bolts factory\",\n            \"item\": \"https:\/\/xzfastener.com\/class-12-9-alloy-steel-bolts-factory\/\"\n          }\n        ]\n      },\n      {\n        \"@type\": \"Product\",\n        \"@id\": \"https:\/\/xzfastener.com\/class-12-9-alloy-steel-bolts-factory\/#product\",\n        \"name\": \"Class 12.9 Alloy Steel Bolts\",\n        \"description\": \"Class 12.9 alloy steel bolts manufactured for machinery, molds, dies, tooling fixtures, automation equipment, precision frames, and high clamp load assemblies, available under suitable dimensional standards such as ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, or buyer drawings with selected finishes according to order requirement.\",\n        \"brand\": {\n          \"@type\": \"Brand\",\n          \"name\": \"XZ Fastener\"\n        },\n        \"manufacturer\": {\n          \"@id\": \"https:\/\/xzfastener.com\/#organization\"\n        },\n        \"category\": \"Alloy steel bolts\",\n        \"material\": \"Heat treated alloy steel\",\n        \"url\": \"https:\/\/xzfastener.com\/class-12-9-alloy-steel-bolts-factory\/\",\n        \"additionalProperty\": [\n          {\n            \"@type\": \"PropertyValue\",\n            \"name\": \"Standard\",\n            \"value\": \"ISO 898-1 mechanical property class with ISO 4762, DIN 912, DIN 931, DIN 933, DIN 6921, or buyer drawing dimensions\"\n          },\n          {\n            \"@type\": \"PropertyValue\",\n            \"name\": \"Strength\",\n            \"value\": \"Class 12.9\"\n          },\n          {\n            \"@type\": \"PropertyValue\",\n            \"name\": \"Finish\",\n            \"value\": \"Black oxide, plain oiled, phosphate, zinc flake, selected coatings\"\n          },\n          {\n            \"@type\": \"PropertyValue\",\n            \"name\": \"Application\",\n            \"value\": \"Tooling fixtures, molds, dies, automation equipment, machinery frames, and precision assemblies\"\n          }\n        ],\n        \"offers\": {\n          \"@type\": \"Offer\",\n          \"url\": \"https:\/\/xzfastener.com\/home\/contact-us\/\",\n          \"seller\": {\n            \"@id\": \"https:\/\/xzfastener.com\/#organization\"\n          }\n        }\n      },\n      {\n        \"@type\": \"FAQPage\",\n        \"@id\": \"https:\/\/xzfastener.com\/class-12-9-alloy-steel-bolts-factory\/#faq\",\n        \"mainEntity\": [\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What does Class 12.9 mean for alloy steel bolts?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Class 12.9 is a high strength metric property class. It indicates very high tensile strength and is typically used for demanding mechanical assemblies where correct tightening and mating material strength are important.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"Which bolt types can be supplied in Class 12.9?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Class 12.9 can be reviewed for socket head cap screws, hex bolts, flange bolts, and drawing-based bolts according to order requirement. The dimensional standard or drawing should be provided in the inquiry.\"\n            }\n          },\n          {\n            \"@type\": \"Question\",\n            \"name\": \"What material is used for Class 12.9 alloy steel bolts?\",\n            \"acceptedAnswer\": {\n              \"@type\": \"Answer\",\n              \"text\": \"Class 12.9 bolts are typically made from heat treated alloy steel. 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These high strength metric bolts are selected where tensile strength, thread accuracy, and controlled tightening are critical. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[110],"tags":[],"class_list":["post-8040","post","type-post","status-publish","format-standard","hentry","category-product-knowledge"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/posts\/8040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/comments?post=8040"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/posts\/8040\/revisions"}],"predecessor-version":[{"id":8041,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/posts\/8040\/revisions\/8041"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/media?parent=8040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/categories?post=8040"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/es\/wp-json\/wp\/v2\/tags?post=8040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}