Product Introduction
DIN912 Allen bolts, also known as socket head cap screws, are precision fasteners with an internal hex drive. They are engineered for applications requiring high torque, compact installation space, and flush installation.
Technical Specifications
| Parameter | Specification |
| Head Type | Cylindrical socket head |
| Drive Type | Internal hex (Allen) |
| Thread Type | Fully threaded / partial thread optional |
| Diameter Range | M2 – M36 |
| Length Range | 4 mm – 200 mm |
| Strength Class | 4.8 / 8.8 / 10.9 / 12.9 / A2-70 / A4-80 |
| Material | Carbon steel / stainless steel / alloy steel |
| Surface Finish | Black oxide / Zinc plated / Passivated / Stainless natural |
| Packaging | Bulk / box / OEM custom packaging |
Surface Finish Note:
Black oxide: Suitable for indoor industrial applications
Zinc plated: General corrosion resistance for standard environments
Stainless steel: Suitable for humid or outdoor environments
Applications
CNC machinery and industrial automation systems
Automotive engines and mechanical assemblies
Aerospace and high-performance equipment
Robotics and precision engineering systems
Mold manufacturing and tooling structures
Electronic and industrial device assemblies
Allen Bolt vs Hex Bolt vs Machine Screw
| Feature | Allen Bolt | Hex Bolt | Machine Screw |
| Drive Type | Internal hex | External hex | Phillips / Slot |
| Torque Capacity | High | Medium | Low |
| Precision Level | High | Medium | Medium |
| Space Requirement | Limited | Open | Limited |
| Typical Use | Precision machinery, robotics, automotive | Structural assemblies | Light equipment, electronics |
Manufacturing & Quality Control
Precision Manufacturing
Cold forging and CNC machining ensure dimensional accuracy and consistent thread quality.
Heat Treatment
Carbon and alloy steel bolts undergo controlled heat treatment to achieve specified strength classes.
Inspection & Testing
Dimensional inspection (100% batch control)
Hardness testing for strength verification
Surface finish inspection
Thread gauge and fit testing
Compliance & Certification
ISO 9001 quality management system
RoHS and REACH compliance
Material Test Certificate (MTC) available upon request
Selection Guidelines
Load Requirement: Higher grades (10.9, 12.9) for high-strength applications.
Corrosion Resistance: Stainless steel or coated bolts for outdoor/humid environments.
Installation Space: Confirm head type and hex socket depth for restricted areas.
Precision: Verify tolerance class for critical engineering fits.
Thread Engagement: Ensure length of thread matches assembly requirements.
Packaging & Supply Options
Bulk packaging for industrial bulk usage
Boxed packaging for distribution and retail channels
Plastic bag packaging with specification labeling
OEM/custom packaging with logo, barcode, and SKU system
FAQ
Q: What is the MOQ for DIN912 Allen bolts?
A: MOQ depends on size, material, and packaging. Standard metric hex socket screws are available from small cartons; custom grades or lengths typically require bulk orders.
Q: Can custom thread lengths or partial threading be made?
A: Yes, DIN912 Allen bolts can be supplied with custom thread lengths, partial threads, or special tolerances for precision applications.
Q: Are material certificates or inspection reports provided?
A: Material Test Certificates (MTC) and third-party inspection reports are available for DIN912 socket head cap screws to ensure traceability and compliance.
Q: How are bolts packaged for shipping?
A: Bolts are packed in moisture-resistant cartons, palletized if needed, with optional corrosion protection for long-distance transport.
Q: Is OEM or private labeling available?
A: Yes, DIN912 Allen bolts can be supplied with OEM packaging, custom labels, and SKU/barcode integration for distributors or industrial clients.
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