Product Description
5/16" BSW Whitworth 12.9 High Tensile Steel Socket Cap Set Screws
5/16" BSW Whitworth socket cap set screws in 12.9 high tensile steel. The cylindrical cap head features an internal hexagon socket for tightening with an Allen key, allowing access where space around the head is limited.
Suitable for repairs, maintenance and assembly work on equipment using matching Whitworth threads. Available in 1", 1 1/4" and 1 1/2" lengths, with an 18 TPI thread.
Technical Specifications
| Thread Size | 5/16" |
|---|---|
| Thread Type | BSW – British Standard Whitworth |
| Threads Per Inch | 18 TPI |
| Material | High tensile steel |
| Grade | 12.9 |
| Head Style | Cylindrical socket cap head |
| Drive Type | Internal hexagon socket |
| Length Measurement | Measured from beneath the head to the end of the screw |
Available Sizes
| Thread Size | Screw Length | Threads Per Inch |
|---|---|---|
| 5/16" BSW | 1" | 18 TPI |
| 5/16" BSW | 1 1/4" | 18 TPI |
| 5/16" BSW | 1 1/2" | 18 TPI |
Select your required screw length and pack quantity from the options above.
Fitting Information
Use with a matching 5/16" BSW 18 TPI nut or tapped hole. Confirm the thread type before fitting, particularly when replacing fasteners in older equipment. BSW and UNC threads have different thread forms, even where their diameter and TPI match.
Use a correctly fitting imperial Allen key and fully engage it in the socket before tightening. Choose a screw length that provides sufficient thread engagement without bottoming out in a blind hole, and tighten to the requirements of the assembly.
