Product Description
UNC Grade 5 Non-Serrated Flange Bolts – Fully Threaded Zinc Plated
These UNC flange bolts are manufactured from Grade 5 high tensile steel with a zinc plated finish. They feature a hexagon head, an integral flange with a smooth underside and a fully threaded shank.
The flange provides a wider bearing area than a conventional hexagon bolt head, helping spread clamping load across the mating surface. Its non-serrated underside suits assemblies requiring a smooth contact face.
Specifications
| Product type | Hexagon flange head bolt / screw |
|---|---|
| Material | High tensile steel |
| Strength grade | Grade 5 |
| Finish | Zinc plated |
| Thread form | UNC – Unified National Coarse |
| Thread coverage | Fully threaded |
| Head style | Hexagon head with integral flange |
| Flange underside | Smooth, non-serrated |
| Length measurement | Measured from beneath the flange to the end of the bolt |
Thread Information
| Nominal Diameter | Threads Per Inch | Thread Designation |
|---|---|---|
| 3/8" | 16 TPI | 3/8"-16 UNC |
Key Features
- Grade 5 high tensile steel construction.
- Fully threaded shank for use with matching nuts or tapped holes.
- Integral flange provides a broad bearing surface.
- Smooth flange underside without serrations.
- Zinc plated finish helps resist corrosion.
- Hexagon head for tightening with a suitable spanner or socket.
Typical Applications
Suitable for machinery, brackets, equipment assembly, automotive maintenance and general engineering where UNC Grade 5 fully threaded flange bolts are specified.
Installation
Use with a matching UNC nut of an appropriate strength grade or a compatible tapped hole. Ensure the flange is properly supported and tighten to the assembly specification, accounting for the plated finish and any lubrication.
The smooth flange has no serrated locking feature. Use an appropriate locking method where required by the joint design.
Ordering
Select the required thread size, bolt length and pack quantity from the available options. Sizes are expressed as nominal thread diameter x length. Length excludes the head and flange.
Standards
- Grade 5 strength designation reference: SAE J429.
- UNC thread form reference: ASME B1.1.
- No specific DIN, BS or ASME flange-head dimensional standard has been verified for this listing.
