Self-tapping press washer with drill
Self-tapping screws with a press washer are highly valued by professional builders working with metals and roofing sheets due to such properties as:
Application: It is used for fastening steel and other sheet to metal supporting structures.
Design features: the head is made in the form of a hemisphere with a press washer and has a cross slot Ph No. 2. The tip of the self-tapping screw is drill-shaped (for metal surfaces) or sharp. Due to the press washer, effective pressing of sheet materials is carried out.
Head: hemispherical with press washer
Thread: frequent
Tip: drill and sharp
Coating: galvanized
galvanized coating
Core hardness 289-449 HV
Surface standing hardness 560-653 HV
Material: C1022
Size-weight
4.2*13 - 1.85
4.2*16 - 1.93
4.2*19 - 2.26
4.2*25 - 2.55
4.2*32 - 3.05
4.2*41 - 3.71
4.2*51 - 4.10
4.2*60 - 4.82
4.2*70 - 5.51
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