{"id":5475,"date":"2026-05-12T14:53:49","date_gmt":"2026-05-12T06:53:49","guid":{"rendered":"https:\/\/xzfastener.com\/?post_type=product&p=5475"},"modified":"2026-05-12T14:55:16","modified_gmt":"2026-05-12T06:55:16","slug":"1-4-20-unc-stainless-steel-304-hex-bolts-fully-threaded-hex-head-screws-with-matching-nuts-and-washers-pack-of-100","status":"publish","type":"product","link":"https:\/\/xzfastener.com\/vi\/products\/1-4-20-unc-stainless-steel-304-hex-bolts-fully-threaded-hex-head-screws-with-matching-nuts-and-washers-pack-of-100\/","title":{"rendered":"1\/4-20 UNC Stainless Steel 304 Hex Bolts, Fully Threaded Hex Head Screws with Matching Nuts and Washers, Pack of 100"},"content":{"rendered":"
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Product Description<\/h2>\n

1\/4-20 UNC Stainless Steel 304 Hex Bolts<\/h2>\n

Our 1\/4-20 UNC Stainless Steel 304 Hex Bolts<\/strong> are durable inch-size fasteners designed for reliable fastening in machinery, equipment, construction, furniture, automotive repair, outdoor projects, and general industrial applications.<\/p>\n

Made from high-quality 304 stainless steel<\/strong>, these hex bolts offer good corrosion resistance, clean appearance, and long-lasting performance. The 1\/4-20 UNC coarse thread<\/strong> design provides easy installation and strong thread engagement. Each bolt features a standard hex head<\/strong>, allowing convenient tightening with a wrench, spanner, or socket tool.<\/p>\n

These bolts are available in multiple lengths from 3\/8 inch to 5 inches<\/strong> and can be supplied with matching hex nuts, flat washers, and spring washers<\/strong> for complete assembly use.<\/p>\n

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Key Features<\/h2>\n
    \n
  • 304 stainless steel material<\/strong> for good corrosion resistance and durability.<\/li>\n
  • 1\/4-20 UNC thread<\/strong>: 1\/4 inch diameter with 20 threads per inch.<\/li>\n
  • Fully threaded design<\/strong> for maximum thread engagement.<\/li>\n
  • Hex head style<\/strong> for easy installation with standard tools.<\/li>\n
  • Right-hand thread direction<\/strong> for standard fastening applications.<\/li>\n
  • Coarse thread spacing<\/strong> for quick installation and general-purpose use.<\/li>\n
  • Multiple lengths available<\/strong> from 3\/8″ to 5″.<\/li>\n
  • Pack of 100 pieces<\/strong>, suitable for repair, assembly, and bulk use.<\/li>\n
  • Optional matching nuts and washers<\/strong> available for complete fastening sets.<\/li>\n<\/ul>\n
    \n

    Product Specifications<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
    Product Name<\/td>\n1\/4-20 UNC Stainless Steel Hex Bolt<\/td>\n<\/tr>\n
    Material<\/td>\nStainless Steel 304<\/td>\n<\/tr>\n
    Size<\/td>\n1\/4-20<\/td>\n<\/tr>\n
    Thread Standard<\/td>\nUNC<\/td>\n<\/tr>\n
    Thread Type<\/td>\nCoarse Thread<\/td>\n<\/tr>\n
    Thread Direction<\/td>\nRight Hand<\/td>\n<\/tr>\n
    Threading<\/td>\nFully Threaded<\/td>\n<\/tr>\n
    Head Style<\/td>\nHex Head<\/td>\n<\/tr>\n
    Measurement System<\/td>\nInch<\/td>\n<\/tr>\n
    Available Lengths<\/td>\n3\/8″ to 5″<\/td>\n<\/tr>\n
    Package<\/td>\nPack of 100<\/td>\n<\/tr>\n
    Matching Parts<\/td>\nHex Nuts, Flat Washers, Spring Washers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    What Does 1\/4-20 UNC Mean?<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n
    Marking<\/th>\nMeaning<\/th>\n<\/tr>\n<\/thead>\n
    1\/4<\/td>\nBolt diameter is 1\/4 inch<\/td>\n<\/tr>\n
    20<\/td>\n20 threads per inch, also called 20 TPI<\/td>\n<\/tr>\n
    UNC<\/td>\nUnified National Coarse Thread<\/td>\n<\/tr>\n
    Right Hand<\/td>\nStandard thread direction, tightened clockwise<\/td>\n<\/tr>\n
    Full Thread<\/td>\nThread runs along the full shank length<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    1\/4-20 UNC<\/strong> is one of the most common inch thread sizes used in American standard fasteners. It is widely used in machinery, equipment, metalwork, woodwork, repair, and general assembly.<\/p>\n

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    Available Length Options<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Diameter<\/th>\nThread Type<\/th>\nAvailable Lengths<\/th>\n<\/tr>\n<\/thead>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n3\/8″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1\/2″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n3\/4″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n7\/8″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1-1\/4″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1-3\/8″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1-1\/2″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1-5\/8″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n1-3\/4″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n2″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\n2-1\/4″<\/td>\n<\/tr>\n
    1\/4-20<\/td>\nUNC Coarse Thread<\/td>\nUp to 5″<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Matching Fastener Options<\/h2>\n

    These stainless steel hex bolts can be supplied as individual bolts or as a complete fastening kit.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n
    Matching Part<\/th>\nFunction<\/th>\n<\/tr>\n<\/thead>\n
    Hex Nut<\/td>\nLocks with the bolt to complete fastening<\/td>\n<\/tr>\n
    Flat Washer<\/td>\nDistributes load and protects the surface<\/td>\n<\/tr>\n
    Spring Washer<\/td>\nHelps improve anti-loosening performance<\/td>\n<\/tr>\n
    Bolt + Nut + Washer Set<\/td>\nConvenient for assembly and maintenance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Using matching 304 stainless steel nuts and washers<\/strong> is recommended when corrosion resistance and consistent material performance are required.<\/p>\n

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    Material Advantages: Stainless Steel 304<\/h2>\n

    304 stainless steel is one of the most widely used stainless steel materials for fasteners. It provides a good balance of corrosion resistance, strength, appearance, and cost performance.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n
    Material<\/th>\nFeature<\/th>\nRecommended Use<\/th>\n<\/tr>\n<\/thead>\n
    Stainless Steel 304<\/td>\nGood corrosion resistance and clean finish<\/td>\nIndoor, outdoor, machinery, furniture, general equipment<\/td>\n<\/tr>\n
    Stainless Steel 316<\/td>\nBetter corrosion resistance in harsh environments<\/td>\nMarine, coastal, chemical, high-humidity applications<\/td>\n<\/tr>\n
    Carbon Steel<\/td>\nHigher strength options available, lower cost<\/td>\nDry indoor use, coated industrial fasteners<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    For general outdoor and indoor fastening, 304 stainless steel 1\/4-20 UNC hex bolts<\/strong> are a practical and reliable choice.<\/p>\n

    \n

    Common Applications<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n
    Application Area<\/th>\nTypical Use<\/th>\n<\/tr>\n<\/thead>\n
    Machinery Assembly<\/td>\nEquipment fastening and maintenance<\/td>\n<\/tr>\n
    Automotive Repair<\/td>\nBrackets, panels, and replacement parts<\/td>\n<\/tr>\n
    Construction<\/td>\nLight structural fastening and installation<\/td>\n<\/tr>\n
    Furniture Assembly<\/td>\nMetal and wood connections<\/td>\n<\/tr>\n
    DIY Projects<\/td>\nHome repair and custom projects<\/td>\n<\/tr>\n
    Electrical Equipment<\/td>\nMounting panels, boxes, and frames<\/td>\n<\/tr>\n
    Outdoor Use<\/td>\nGeneral corrosion-resistant fastening<\/td>\n<\/tr>\n
    Industrial Maintenance<\/td>\nReplacement screws, bolts, and hardware kits<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Product Advantages<\/h2>\n

    These 1\/4-20 UNC Stainless Steel 304 Hex Bolts<\/strong> are designed for users who need reliable, corrosion-resistant inch fasteners. The fully threaded body provides strong holding power, while the hex head allows secure tightening with common hand tools.<\/p>\n

    The pack of 100<\/strong> is convenient for workshops, repair departments, contractors, factories, and distributors. Multiple length options allow customers to choose the correct bolt for different assembly thicknesses and fastening requirements.<\/p>\n

    \n

    Installation Notes<\/h2>\n

    Before ordering, please confirm the following details:<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Required Information<\/th>\nExample<\/th>\n<\/tr>\n<\/thead>\n
    Thread Size<\/td>\n1\/4-20 UNC<\/td>\n<\/tr>\n
    Length<\/td>\n3\/8″, 1\/2″, 1″, 2″, 5″<\/td>\n<\/tr>\n
    Material<\/td>\nStainless Steel 304<\/td>\n<\/tr>\n
    Quantity<\/td>\nPack of 100 or bulk order<\/td>\n<\/tr>\n
    Matching Accessories<\/td>\nNuts, flat washers, spring washers<\/td>\n<\/tr>\n
    Application<\/td>\nMachinery, furniture, automotive, outdoor project<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Please make sure the bolt is used with a matching 1\/4-20 UNC nut<\/strong> or threaded hole. Metric nuts or other thread types will not fit correctly.<\/p>\n

    \n

    FAQ<\/h2>\n

    Q1: What does 1\/4-20 mean?<\/h3>\n

    1\/4-20<\/strong> means the bolt diameter is 1\/4 inch<\/strong>, and the thread has 20 threads per inch<\/strong>.<\/p>\n

    Q2: What does UNC mean?<\/h3>\n

    UNC<\/strong> means Unified National Coarse Thread<\/strong>. It is a common American inch coarse thread standard.<\/p>\n

    Q3: Are these bolts metric or inch size?<\/h3>\n

    These are inch-size bolts<\/strong>, not metric bolts.<\/p>\n

    Q4: What material are these bolts made from?<\/h3>\n

    They are made from 304 stainless steel<\/strong>, which offers good corrosion resistance and durability.<\/p>\n

    Q5: Are these bolts fully threaded?<\/h3>\n

    Yes. These bolts are fully threaded<\/strong>, which means the thread runs along the full shank length.<\/p>\n

    Q6: What thread direction do these bolts have?<\/h3>\n

    They are right-hand thread bolts<\/strong>, which means they tighten clockwise and loosen counterclockwise.<\/p>\n

    Q7: What lengths are available?<\/h3>\n

    Available lengths range from 3\/8 inch to 5 inches<\/strong>, including common sizes such as 1\/2″, 3\/4″, 1″, 1-1\/2″, 2″, and 2-1\/4″.<\/p>\n

    Q8: Does the package include nuts and washers?<\/h3>\n

    The product can be supplied as bolts only or with matching nuts, flat washers, and spring washers<\/strong> according to customer requirements.<\/p>\n

    Q9: Can these bolts be used outdoors?<\/h3>\n

    Yes. 304 stainless steel has good corrosion resistance and is suitable for many indoor and outdoor environments. For marine or highly corrosive environments, 316 stainless steel may be recommended.<\/p>\n

    Q10: Can I use metric nuts with these bolts?<\/h3>\n

    No. These bolts require matching 1\/4-20 UNC nuts<\/strong>. Metric nuts are not compatible.<\/p>\n

    \n

    Short Product Summary<\/h2>\n

    1\/4-20 UNC Stainless Steel 304 Hex Bolts<\/strong> are fully threaded inch-size hex head fasteners made from corrosion-resistant 304 stainless steel. Available in lengths from 3\/8″ to 5″<\/strong>, these bolts are suitable for machinery, automotive repair, furniture assembly, construction, outdoor projects, and industrial maintenance. Matching nuts, flat washers, and spring washers are available for complete fastening solutions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

    <\/div>\n<\/div>\n<\/div>\n
    <\/div>\n
    <\/div>\n","protected":false},"excerpt":{"rendered":"

    Product Description 1\/4-20 UNC Stainless Steel 304 Hex Bolts Our 1\/4-20 UNC Stainless Steel 304 Hex Bolts are durable inch-size fasteners designed for reliable fastening in machinery, equipment, construction, furniture, automotive repair, outdoor projects, and general industrial applications. Made from high-quality 304 stainless steel, these hex bolts offer good corrosion resistance, clean appearance, and long-lasting […]<\/p>\n","protected":false},"featured_media":5477,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"fastener-coating":[95,150,37,94],"fastener-material":[43],"fastener-type":[53,474],"product_brand":[],"product_cat":[22],"product_tag":[],"class_list":{"0":"post-5475","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"fastener-coating-natural-finish","7":"fastener-coating-custom-color-coating","8":"fastener-coating-original-material","9":"fastener-coating-original-material-natural-finish","10":"fastener-material-stainless-steel","11":"fastener-type-bolts","12":"fastener-type-hex-head-bolt","13":"product_cat-standard-fasteners","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5475","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=5475"}],"version-history":[{"count":2,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5475\/revisions"}],"predecessor-version":[{"id":5478,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5475\/revisions\/5478"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media\/5477"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=5475"}],"wp:term":[{"taxonomy":"fastener-coating","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-coating?post=5475"},{"taxonomy":"fastener-material","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-material?post=5475"},{"taxonomy":"fastener-type","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-type?post=5475"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_brand?post=5475"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_cat?post=5475"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_tag?post=5475"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}