Product Description
300 Assorted UNC Grade 5 Zinc Plated Hexagon Set Screws & Nuts
A practical assortment containing 150 fully threaded hexagon head set screws and 150 matching full nuts. Covers three imperial UNC diameters for workshop repairs, maintenance and assembly.
Specifications
- Material: steel.
- Finish: zinc plated.
- Set screw strength: Grade 5 high tensile.
- Thread: UNC, right-hand.
- Head style: external hexagon.
- All set screws are fully threaded.
- Total contents: 300 pieces.
Contents
Set screw sizes show thread diameter × length in inches.
| Component | Size | Quantity |
|---|---|---|
| Hexagon set screw | 1/4" × 1/2" UNC | 20 |
| Hexagon set screw | 1/4" × 3/4" UNC | 20 |
| Hexagon set screw | 1/4" × 1" UNC | 20 |
| Full nut | 1/4" UNC | 60 |
| Hexagon set screw | 5/16" × 5/8" UNC | 20 |
| Hexagon set screw | 5/16" × 3/4" UNC | 20 |
| Hexagon set screw | 5/16" × 1" UNC | 20 |
| Full nut | 5/16" UNC | 60 |
| Hexagon set screw | 3/8" × 3/4" UNC | 12 |
| Hexagon set screw | 3/8" × 1" UNC | 10 |
| Hexagon set screw | 3/8" × 1 1/4" UNC | 8 |
| Full nut | 3/8" UNC | 30 |
| Total | 300 | |
Thread & Spanner Size Guide
| Thread Diameter | Threads Per Inch | Standard Hex Head Spanner Size |
|---|---|---|
| 1/4" UNC | 20 TPI | 7/16" AF |
| 5/16" UNC | 18 TPI | 1/2" AF |
| 3/8" UNC | 16 TPI | 9/16" AF |
AF means across flats. Measure screw length from beneath the head to the tip.
Packaging Options
- Boxed set: clear plastic storage box with clip-down lid.
- Refill pack: supplied without a storage box.
Fitting
Match the UNC diameter and thread before assembly. Start nuts by hand and tighten using a correctly fitting imperial spanner or socket.
Browse additional nuts and washers, or consult our thread size guide.
