Product Description
1/4" UNF A2 stainless steel countersunk slotted machine screws to ASME B18.6.3, fully threaded and suitable for use with matching 1/4" UNF nuts or tapped holes.
These Unified National Fine machine screws feature a flat countersunk head for a flush finish when fitted into a countersunk hole, with a slotted drive for installation using a flat blade screwdriver. Manufactured from A2 stainless steel, also known as 304 stainless steel, they offer good corrosion resistance for engineering, machinery, automotive, restoration, maintenance and general fastening applications.
- 1/4" UNF Unified National Fine thread
- A2 stainless steel, also known as 304 stainless steel
- ASME B18.6.3 countersunk slotted machine screw pattern
- Flat head countersunk for flush fitting
- Slotted drive
- Fully threaded
- 28 TPI thread pitch
- Available in 1/2", 3/4", 1", 1 1/4" and 1 1/2" lengths

| A | B | C | D | E |
| 1/4" | 1/2" | * | * | 28 |
| 1/4" | 1 1/2" | * | * | 28 |
| 1/4" | 1 1/4" | * | * | 28 |
| 1/4" | 1" | * | * | 28 |
| 1/4" | 3/4" | * | * | 28 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.