1 2 4 1 2 З? 4 5 —? —? —? —? —? —?
CROSS RECESSED COUNTERSUNK (FLAT) HEADTAPPING SCREWS (COMMON HEAD STYLE)
Specifications
1 2 ISO 225 Fasteners — Bolts, screws, studs and nuts — Symbols and designations of dimensions
ISO 1478 Tapping screws thread
ISO 2702 Heat-treated steel tapping screws — Mechanical properties.
ISO 3269 Fasteners —Acceptance inspection 1 ).
ISO 4042 Threaded components — Electroplated coatings components 1 )
ISO 4757 Cross recesses for screws
ISO 4759/1 Tolerances for fasteners — Part 1: Bolts, screws and nuts with thread diameter >1,6 and <150 mm and product grades A, ISO 7721 Countersunk head screws — Head configurations and gauging.
ISO 225 ISO 1478 ISO 2702 ISO 3269 ISO 4042 ISO 4757 1) ISO 4759/1 ISO 7721
2,2 ST
2,9 ST
3,5 ST
4,2 ST 4,8 ST
5,5 ST 6,3 ST 8 ST
9,5
2,2 ST
2,9 ST
3,5 ST
4,2 ST
4,8 ST
5,5 ST
6,3 ST 8 ST
9,5 2) 31 41 S)
4
5