Product Description
No.4 A2 Stainless Steel Countersunk Slotted Self Tapping Screws
These No.4 countersunk slotted self tapping screws are manufactured from corrosion-resistant A2 stainless steel. The flat countersunk head is designed to sit flush with a suitably prepared surface, while the traditional slotted drive can be installed with a standard flat-bladed screwdriver or bit.
With a nominal thread diameter of approximately 2.9mm, these screws are suitable for fastening sheet metal, plastics and other compatible materials. The tapping thread forms a mating thread as the screw is driven into a correctly sized pilot hole. These are self tapping screws, not self drilling screws.
- Nominal size: No.4 / approximately 2.9mm
- Material: A2 stainless steel
- Head style: Countersunk flat head
- Drive: Slotted
- Thread: Self tapping
- Legacy dimensional standard: DIN 7972
- Current dimensional standard: ISO 1482:2011 / BS EN ISO 1482:2011, subject to dimensional verification
- Installation: Requires a suitable pilot hole
Select the required length and pack quantity from the options above. Confirm the screw dimensions, thread form and required pilot-hole diameter before installation, particularly where the fastening is safety-critical.
A2 stainless steel provides good resistance to corrosion in many general-purpose indoor and outdoor environments. For marine, coastal, chlorinated or similarly aggressive conditions, an appropriate A4 stainless steel product may be preferable.
Please note: dimensions and standards are provided as a guide. If they are critical to your application, please confirm them with us before ordering.
| A | B | C | D | E | F |
| No.4 | 2.9mm | 1" | 25mm | 7/32" | 5.5mm |
| No.4 | 2.9mm | 1/2" | 13mm | 7/32" | 5.5mm |
| No.4 | 2.9mm | 1/4" | 6mm | 7/32" | 5.5mm |
| No.4 | 2.9mm | 3/4" | 19mm | 7/32" | 5.5mm |
| No.4 | 2.9mm | 3/8" | 9.5mm | 7/32" | 5.5mm |
| No.4 | 2.9mm | 5/8" | 16mm | 7/32" | 5.5mm |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.
