FASTENER STANDARD
ISO 15480
Hexagon washer head drilling screws with tapping screw thread
This document specifies the characteristics of hexagon washer head drilling screws with tapping screw threads, made of steel, with thread sizes ST2,9 to ST6,3, and with product grade A.
2019 · currentISO 15480 dimensional reference
Hexagon washer head drilling screws with tapping screw thread
| Thread size | Pitch (mm) | aMax | cMin | daMax | Bearing diameter dc (mm) | dcMin | Across corners e (mm) | Head height k (mm) | kMin | kwMin | r1Min | r2Max | Across flats s (mm) | sMin | drillMin | drillMax |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.9 | 1.1 | 1.1 | 0.4 | 3.5 | 6.3 | 5.8 | 4.28 | 2.8 | 2.5 | 1.3 | 0.1 | 0.2 | 4 | 3.82 | 0.7 | 1.9 |
| ST3.5 | 1.3 | 1.3 | 0.6 | 4.1 | 8.3 | 7.6 | 5.96 | 3.4 | 3 | 1.5 | 0.1 | 0.25 | 5.5 | 5.32 | 0.7 | 2.25 |
| ST4.2 | 1.4 | 1.4 | 0.8 | 4.9 | 8.8 | 8.1 | 7.59 | 4.1 | 3.6 | 1.8 | 0.2 | 0.3 | 7 | 6.78 | 1.75 | 3 |
| ST4.8 | 1.6 | 1.6 | 0.9 | 5.6 | 10.5 | 9.8 | 8.71 | 4.3 | 3.8 | 2.2 | 0.2 | 0.3 | 8 | 7.78 | 1.75 | 4.4 |
| ST5.5 | 1.8 | 1.8 | 1 | 6.3 | 11 | 10 | 8.71 | 5.4 | 4.8 | 2.7 | 0.25 | 0.4 | 8 | 7.78 | 1.75 | 5.25 |
| ST6.3 | 1.8 | 1.8 | 1 | 7.3 | 13.5 | 12.2 | 10.95 | 5.9 | 5.3 | 3.1 | 0.25 | 0.5 | 10 | 9.78 | 2 | 6 |
