Fasteners, Bolts, Nuts & Hardware – Applications of Steel Bright Bars
This application falls under the General Engineering & Fabrication segment, where bright steel bars are
used for precision fasteners, cold-formed parts and high-strength hardware.
In fastener manufacturing, bright bars are preferred for their controlled chemistry, surface finish,
dimensional accuracy and suitability for cold heading, machining and heat treatment.
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Why Bright Steel Bars Are Used in Fastener Manufacturing
- Consistent surface quality for cold heading and forming
- Controlled chemical composition for predictable heat treatment
- Dimensional accuracy reducing machining and rework
- Good machinability for threaded and precision fasteners
- Uniform mechanical properties for batch consistency
Typical Fasteners & Hardware Manufactured
- Bolts, nuts and studs
- Socket head cap screws
- Foundation bolts and anchor fasteners
- Dowel pins and precision pins
- Washers, spacers and threaded rods
Common Steel Grades Used
| Fastener Type | Typical Grades |
|---|---|
| Cold Heading Fasteners | EN1A, EN1A(L) |
| Medium Strength Fasteners | C45 / EN8, EN8M |
| High Strength Fasteners | EN19, 15B25 |
| Case Hardened Pins | 16MnCr5, 20MnCr5 |
Bright Bar Sections Commonly Used
- Rounds
- Hexagons
- Squares
- Custom wire-rod and bar sections for fasteners
Standards & Manufacturing Considerations
- Compatibility with ISO, DIN and IS fastener standards
- Suitable for cold heading, threading and machining
- Controlled sulphur levels for free-cutting grades
- Consistent response to quenching and tempering
Related Applications
Why Steelmet Industries?
- Clean surface finish suitable for cold forming
- Wide range of carbon, alloy and free-cutting steels
- VD route steels for critical fastener applications
- Support for grade selection and process optimisation
- Quality verification via NABL-certified testing
FAQs
Why are bright bars preferred for cold heading fasteners?
Bright bars offer clean surfaces and controlled chemistry, reducing tool wear and improving forming consistency.
Which grades are used for high tensile fasteners?
EN19 and boron steels like 15B25 are commonly used for high-strength fasteners.
Can bright bars be supplied for case hardened fasteners?
Yes. Grades like 16MnCr5 and 20MnCr5 are widely used for case hardened fasteners and pins.
Contact for Enquiries
For technical discussions, drawings or sourcing of bright steel bars for fasteners and hardware: