Description
Self-Tapping Screw Phillips Countersunk Head ST2.9x13mm SS A2 ISO 7050 Form F / DIN 7982F — BOLTON SKU 56340.
About the Self-Tapping Screw Phillips Countersunk Head ST2.9x13mm
This screw self tapping philips countersunk item is a cross-recessed countersunk head tapping screw to ISO 7050 and its DIN 7982 equivalent, in the Form F variant. Thread size is ST2.9 with the tapping-screw thread form specified in ISO 1478, and the nominal length is 13 mm, which sits inside the 6.5 to 25 mm range the standard lists for this size. The countersunk head measures 5.5 mm maximum and 5.2 mm minimum across the diameter with a head height of about 1.7 mm, and it is driven through a No. 1 cross recess. The material is A2 austenitic stainless steel to the range covered by the standard. As a tapping screw it forms its own mating thread as it is driven into a correctly sized pilot hole, so no separate nut or pre-tapped thread is needed.
Key specifications
| Standard | ISO 7050 / DIN 7982, Form F |
|---|---|
| Thread size | ST2.9, tapping screw thread to ISO 1478 |
| Nominal length | 13 mm |
| Head form | Countersunk (flat) |
| Head diameter (dk) | 5.5 mm max / 5.2 mm min |
| Head height (k) | approx. 1.7 mm |
| Drive | Cross recess No. 1 |
| Material | A2 austenitic stainless steel |
Typical applications
Used where a small fixing must finish flush in a countersunk hole — thin sheet panels, trim, covers and light brackets — and where drilling a pilot hole is preferable to tapping one. The countersunk head lets the screw sit level with the surface so nothing snags, which matters on handled or sliding panels. The A2 stainless material suits damp interior and sheltered exterior positions where a plated steel tapping screw would rust around the head.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
Browse more in MIL-Spec & Coded Fasteners.
Reviews
There are no reviews yet.