Product Description
BSF Philidas All Metal Locking Nuts – Zinc Plated Steel
Zinc plated steel Philidas all metal locking nuts with British Standard Fine (BSF) threads. Their all metal locking feature provides resistance to rotation on the mating thread, helping resist unwanted loosening in a correctly assembled joint.
Available in 5/16", ⅜" and 7/16" BSF sizes for machinery maintenance, restoration and repairs involving imperial fine threaded components.
Specifications
| Feature | Specification |
|---|---|
| Fastener type | Philidas all metal locking nut |
| Material | Steel |
| Finish | Zinc plated |
| Thread system | BSF – British Standard Fine |
| Locking feature | All metal prevailing torque |
| Available thread sizes | 5/16", ⅜" and 7/16" BSF |
| Pack quantities | 1, 5, 10, 20, 50 and 100 |
Available Thread Sizes
| BSF Thread Size | Threads Per Inch |
|---|---|
| 5/16" BSF | 22 TPI |
| ⅜" BSF | 20 TPI |
| 7/16" BSF | 18 TPI |
Key Features
- All metal locking construction.
- Prevailing torque action helps resist unwanted rotation.
- BSF threads for matching imperial bolts, screws and studs.
- Zinc plated steel finish.
- Three thread sizes with a choice of pack quantities.
Typical Applications
Suitable for machinery, equipment maintenance and restoration projects requiring BSF threaded locking nuts. Select the nut to suit the joint specification and service conditions.
Installation
Check that the mating bolt or stud has the correct BSF diameter and pitch. Start the nut square to the thread and use a correctly fitting spanner or socket. Allow for the prevailing torque of the locking feature when following the assembly’s tightening procedure.
| A | B | C | D |
| 1/4" | 0.43" | 0.30" | 26 |
| 5/16" | 0.52" | 0.32" | 22 |
| 3/8" | 0.59" | 0.39" | 20 |
| 7/16" | 0.70" | 0.45" | 18 |
