10B21 carbon steel screws exporter
XZ Fastener exports 10B21 carbon steel screws for international buyers who need stable cold-formed parts with controlled heat treatment, drive fit, thread performance, finish, packing, and shipping documents. 10B21 boron-treated carbon steel is commonly specified for self-tapping screws, machine screws, SEMS screws, and thread-forming screws that need better hardenability than ordinary low carbon steel. Products can be supplied according to DIN, ISO, ANSI, JIS, GB, or buyer drawings. Purchasing teams can review related منتجات السحابة before sending size lists for export quotation.
المواصفات السريعة
What Buyers Should Know Before Sourcing 10B21 Carbon Steel Screws
Export buyers should confirm more than diameter, length, and quantity. 10B21 screws often require clear information about head style, drive recess, thread form, point style, heat treatment, hardness range, coating thickness, corrosion requirement, packing format, and destination documents.
For special heads, non-standard points, washer assemblies, shoulder sections, under-head serrations, or controlled recess depth, XZ Fastener can review السحابات المخصصة according to drawings, samples, or clear dimensional specifications.
أوصاف الشراء الشائعة
Many buyers combine screw orders with related bolt items for one shipment, including DIN 933 موضوع كامل مسامير سداسية, 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.
- 10B21 carbon steel self-tapping screws, case hardened, zinc plated finish.
- 10B21 pan head machine screws with Phillips or Pozi drive, export carton packing.
- Carbon steel SEMS screws with captive washer, packed by size and item code.
- 10B21 countersunk screws for metal assembly, black oxide or zinc plated finish.
- Thread forming screws with specified hardness range and coating thickness.
- Drawing-based 10B21 screws with special point, recess, head marking, or packing label.
Machine Screw Style Reference
When checking head style and collar design, buyers can compare dimensions with XZ Fastener’s machine screw product example, then send the required carbon steel material, finish, hardness, quantity, and packing details for export review.
جدول المواصفات التفصيلية
| البند | الخيارات المتاحة | تصدير ملاحظات المشتري |
|---|---|---|
| نوع المنتج | Machine screws, self-tapping screws, thread forming screws, SEMS screws, countersunk screws, pan head screws, special screws | Provide the screw function and mating material so the thread and point can be reviewed. |
| مادة | 10B21 carbon steel, boron-treated steel, alternative carbon steel grades available upon request | Material equivalence should be confirmed by chemical composition and mechanical requirement. |
| قياسي | DIN, ISO, ANSI, JIS, GB, or buyer drawing | State the standard revision when the project specification controls it. |
| نمط الرأس | Pan, flat, countersunk, truss, wafer, hex washer, flange, collar, and custom heads | Head diameter, height, recess depth, and under-head geometry should be defined. |
| قيادة | Phillips, Pozi, slotted, hex socket, Torx, combination drive, and special recess | Drive gauge or bit fit requirement should be confirmed for automated assembly. |
| الموضوع والنقطة | Metric machine thread, tapping thread, thread forming profile, Type A, AB, B, blunt, drill point | Point style should match the mating sheet, pilot hole, or plastic component. |
| المعالجة الحرارية | Case hardening, carbonitriding, tempering, or hardness range according to order requirement | Surface hardness, core hardness, and case depth should be specified when critical. |
| الانتهاء من السطح | Zinc plated, black oxide, phosphate, nickel plated, zinc nickel, plain oil, mechanical plating | Finish should match corrosion, torque, appearance, and assembly requirements. |
| التفتيش | Dimension, thread, drive fit, hardness, case depth, coating thickness, salt spray, visual check | Inspection reports or third-party checks should be confirmed before order placement. |
| التعبئة | Bulk cartons, small boxes, poly bags, pallets, item labels, mixed-size packing | Provide carton weight, label format, barcode, pallet requirement, and shipping marks if needed. |
شرح المواد والصف
10B21 is a boron-treated carbon steel often used for screws that need case hardening and better hardenability than common low carbon steel. The material can support cold forming, thread rolling, point forming, and heat treatment for self-tapping and thread-forming applications when the process is properly controlled.
Buyers should not assume every carbon steel screw grade is interchangeable. If the order requires 10B21, provide the material standard, hardness range, case depth, torsion requirement, and any restrictions on alternative grades.
دليل اختيار تشطيب السطح
- مطلي بالزنك: common for general assembly screws requiring clean appearance and moderate corrosion resistance.
- أكسيد أسود: suitable for indoor machinery screws where dark appearance and oil protection are acceptable.
- Phosphate: often selected for oil retention, controlled friction, or paint adhesion needs.
- Nickel plated: used when appearance and surface cleanliness are important for visible parts.
- Zinc nickel: considered when higher corrosion performance is required for automotive or equipment applications.
- Plain oil: used for short-term protection or parts that will receive further processing after delivery.
التصنيع ومراقبة الجودة
Production Review
Export production planning covers wire material confirmation, heading, recess forming, thread rolling, point forming, heat treatment, surface finishing, inspection, batch separation, and packing. For 10B21 screws, forming quality and heat treatment control are important because they affect drive strength, thread performance, and assembly reliability.
For material traceability and stable forming performance, buyers can discuss raw material inspection, wire diameter checks, and batch documentation before production starts.
نقاط التفتيش
Common checks include head dimensions, recess depth, drive fit, thread gauge, point geometry, hardness, case depth, coating thickness, salt spray when required, surface appearance, quantity, packing label, carton weight, and pallet condition before shipment.
Inspection content can be adjusted according to product risk, assembly method, destination market, and buyer requirements.
التطبيقات
تجميع الصفائح المعدنية
Used for tapping and thread-forming applications in brackets, panels, housings, and equipment covers.
Appliance Production
Suitable for assembly lines that require stable drive fit, repeatable threads, and consistent plating appearance.
Automotive Components
Applied in brackets, interior parts, electrical modules, and hardware assemblies where coating and hardness are controlled.
Electrical Cabinets
Used for panels, rails, boxes, and enclosure assembly with zinc plated or black finish options.
أجهزة الأثاث
Supplied for hinges, brackets, metal frames, and hardware kits requiring clean packing and item labels.
الصيانة الصناعية
Used for repair stock, mixed-size screw kits, and replacement parts for machinery and plant maintenance.
كيفية الحصول على عرض أسعار أسرع
A complete export inquiry helps the team check material, tooling, heat treatment, finish, inspection, packing, and shipping details without repeated clarification. For 10B21 carbon steel screws, head style, drive, point, hardness, and finish should be clearly listed.
- Send size list with diameter, length, thread type, head style, drive, and point style.
- Confirm material grade, heat treatment, surface hardness, core hardness, and case depth if required.
- Attach drawings for special heads, non-standard recess, SEMS assemblies, or controlled tolerances.
- State finish, salt spray requirement, quantity, packaging method, label format, and destination.
- List inspection requirements, reports, or third-party checking before quotation.
Export Packing and Documents
Bulk screw shipments may require small boxes, poly bags, carton labels, barcode labels, item-code labels, pallet packing, or mixed-size packing. Buyers should confirm carton weight limits, pallet rules, shipping marks, and whether each finish or size must be packed separately.
For export preparation, buyers can review XZ Fastener’s guide to shipping documents and send the required invoice description, packing list format, and destination details before shipment planning.
الأسئلة الشائعة
Can XZ Fastener export 10B21 carbon steel screws according to drawings?
Yes. Drawing-based 10B21 screws can be reviewed according to order requirement. Please provide dimensions, head style, drive, thread, point, material, heat treatment, finish, quantity, packing, and inspection requirements.
Why is 10B21 used for self-tapping or thread-forming screws?
10B21 is often selected because the boron-treated carbon steel can provide better hardenability after heat treatment than ordinary low carbon steel, which helps support tapping and thread-forming performance.
Can 10B21 screws be exported with zinc plating and salt spray requirements?
Yes. Zinc plating and other finishes can be discussed with coating thickness and salt spray requirements. Buyers should state the expected corrosion test hours and inspection method before production.
What hardness information should be provided for 10B21 screws?
For heat treated screws, provide surface hardness, core hardness, case depth, torsion requirement, or the applicable standard. These details help control screw performance and reduce assembly risk.
Can SEMS screws be made from 10B21 carbon steel?
SEMS screws with captive washers can be reviewed according to washer type, screw dimensions, assembly method, finish, and packing requirement. Drawings or samples are helpful for accurate confirmation.
ما هي المعلومات المطلوبة لعرض أسعار التصدير؟
Please send screw type, size list, head style, drive, thread, point, material, heat treatment, finish, quantity, packaging, inspection requirements, destination, and any required shipping documents.
Send Your 10B21 Carbon Steel Screw Export Inquiry
For a faster quotation, send your size list, finish, quantity, packaging, and inspection requirements. Drawings, samples, head style, drive type, point style, hardness requirement, label details, destination, and document needs help the export team confirm production more accurately. To submit files and purchasing details, اتصل بـ XZ Fastener.
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