Cold Forged Fasteners
High-precision cold forged fasteners including bolts, nuts, and custom fastener components
| Materials | Carbon Steel, Stainless Steel, Aluminum |
|---|---|
| Processes | Forging |
| Tolerance | IT4-IT6 |
| Standard | ISO 898, ASTM A325, A490 |
Overview
ORROMFG produces high-precision cold forged fasteners for demanding industrial and automotive applications. Our cold forging process forms fasteners at room temperature, work-hardening the material for enhanced tensile strength while delivering exceptional dimensional accuracy and smooth surface finishes. From standard hex bolts to custom-designed specialty fasteners, we manufacture components that meet the strictest quality and performance standards.
Key Features
- High dimensional accuracy: IT4–IT6 tolerances for consistent fit and assembly
- Superior surface finish: Ra 1.6–3.2 μm directly from the forging process
- Improved mechanical properties: Work hardening increases strength without heat treatment
- Material efficiency: Near-net-shape process minimizes material waste
- High-volume capability: Automated production lines for quantities from 1,000 to 500,000+ pieces
Fastener Types
- Hex bolts and screws — Standard and custom lengths in various head styles
- Nuts and threaded fasteners — Hex nuts, flange nuts, and specialty nut configurations
- Shoulder bolts and stripper bolts — Precision shoulder diameters for locating applications
- Rivets and pins — Solid and semi-tubular rivets, dowel pins, and clevis pins
- Custom fasteners — Engineered-to-print fastener components with unique geometries
Applications
- Automotive industry: Engine, chassis, and body fasteners meeting IATF 16949
- Heavy equipment: High-strength structural bolts for construction and mining machinery
- Wind energy: Tower and turbine assembly fasteners in high-strength alloy steel
- Aerospace: Precision fasteners for aircraft structural and engine components
- General industrial: Standard and specialty fasteners for machinery and equipment assembly
Specifications
| Property | Metric Range | Imperial Range |
|---|---|---|
| Diameter | M3 – M24 | #10 – 1" |
| Length | 6 mm – 300 mm | 0.25" – 12" |
| Strength class | 8.8, 10.9, 12.9 | Grade 5, Grade 8 |
| Surface finish | Zinc plating, hot-dip galvanized, black oxide, passivated | Zinc, HDG, black oxide |
We also offer complementary precision machining services for fastener sub-assemblies. For larger structural components, see our Hot Forged Steel Shafts or explore the complete Forging product range.
Related Forging Products
- Hot Forged Steel Shafts — Heavy-duty hot forged steel shafts for drivetrain systems
- Forged Flange Blanks — Precision forged flange blanks for secure connections
