Product Description
138 Assorted UNF Grade 5 Zinc Plated Hex Head Set Screws
An assortment of fully threaded hexagon head set screws in three imperial UNF thread sizes. Includes eight diameter and length combinations for workshop assembly, maintenance and repairs.
Specifications
- Material: high tensile steel.
- Strength grade: Grade 5.
- Finish: zinc plated.
- Head type: hexagon.
- Thread: UNF imperial fine, fully threaded.
- Diameters: 1/4", 5/16" and 3/8".
- Total quantity: 138 set screws.
Thread and Spanner Sizes
Reference spanner sizes are measured across the flats of the hexagon head.
| Thread Size | Threads Per Inch | Spanner Size |
|---|---|---|
| 1/4" UNF | 28 TPI | 7/16" |
| 5/16" UNF | 24 TPI | 1/2" |
| 3/8" UNF | 24 TPI | 9/16" |
Assortment Contents
| Thread Size | Length | Quantity |
|---|---|---|
| 1/4"-28 UNF | 1/2" | 20 |
| 1/4"-28 UNF | 3/4" | 20 |
| 1/4"-28 UNF | 1" | 20 |
| 5/16"-24 UNF | 1/2" | 20 |
| 5/16"-24 UNF | 3/4" | 20 |
| 5/16"-24 UNF | 1" | 16 |
| 3/8"-24 UNF | 3/4" | 12 |
| 3/8"-24 UNF | 1" | 10 |
| Total | 138 | |
Packaging Options
- Boxed set: supplied in a plastic storage box with dividers and a clip-down lid.
- Refill pack: supplied without a storage box.
Selecting and Fitting
Length is measured from beneath the head to the end of the screw. Match the diameter and TPI to the mating nut or threaded hole, and allow for any washers when selecting the length. Start the thread by hand before tightening with the correct spanner or socket.
Browse our nuts and washers, or consult our thread size guide for help identifying compatible fasteners.
