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High-Strength Socket Head Cap Screws from China Factory | Reliable Allen Bolts Suppliers
Product Overview
| Product Name | Socket Head Cap Screw / Allen Bolt / Hex Socket Screw |
| Head Type | Cylindrical Head with Hex Socket (Allen) |
| Drive Type | Internal Hex (Allen Key) |
| Thread Type | Fully or partially threaded (Metric / Inch) |
| Standards | DIN 912, ISO 4762, ANSI B18.3 or customized |
| Material | Carbon Steel (Grade 8.8, 10.9, 12.9) |
| Alloy Steel | |
| Stainless Steel (SS304 / SS316) | |
| Surface Finish | Black Oxide |
| Zinc Plated | |
| Hot Dip Galvanized | |
| Dacromet / Ruspert | |
| Size Range | Metric: M3 – M30 |
| Inch: 1/8" – 1-1/4" | |
| Length: 6mm – 200mm or as required |
Product Features
High-strength design, ideal for high-torque applications
Cylindrical head allows installation in tight spaces
Internal hex socket provides reliable torque transmission
Available in both coarse and fine threads
Uniform threading and excellent surface finish
Meets international standards for quality and performance
Applications
Machinery and mechanical equipment
Automotive and heavy vehicles
Industrial assembly and metal structures
Aerospace and precision instruments
Robotics and automation systems
Tooling and fixture construction
Packaging & Delivery
| Packaging | Bulk cartons, plastic bags, or small boxes |
| Custom packaging available with logo or barcode | |
| Lead Time | 7–25 days depending on order size and type |
| Shipping Port | Tianjin, China |
Why Choose Us?
Expert manufacturer with over 10 years in fastener industry
Wide range of socket screws in standard and non-standard sizes
ISO 9001-certified quality control
Exported to over 30 countries worldwide
Competitive pricing, flexible MOQ, and on-time delivery
Frequently Asked Questions
What standards do your socket head cap screws meet?
Our hex socket screws are manufactured in compliance with international standards including DIN 912, ISO 4762, and ANSI B18.3. We can also customize standards according to your specific blueprint requirements.
What materials are available for these Allen bolts?
We offer them in high-strength carbon steel (Grades 8.8, 10.9, and 12.9), alloy steel, and stainless steel (SS304 and SS316) for superior corrosion resistance.
Can I order custom packaging with our company logo?
Yes, we support customized packaging options. We can supply bulk cartons, plastic bags, or small boxes labeled with your company logo or barcode.
What is the delivery lead time for orders?
The standard lead time is between 7 and 25 days. The exact timeframe depends on the order volume, specification complexity, and current production schedules.
What size ranges do you manufacture?
We offer a wide sizing range. Metric sizes span from M3 to M30, and Inch sizes run from 1/8" to 1-1/4", with lengths ranging from 6mm to 200mm.
Where is your shipping port located?
All products are standardly shipped from the Tianjin Port in China, which provides efficient logistics connections globally.