Hexagon head self tapping screw
S-metal produces hexagon head self tapping screw for roofing fitting and fastening, meanwhile hex head tapping screw is assembled by hex wrench driver. are Normally hex head tapping screws are apply to roofing fitting and fastening.
Standards:ISO1479/DIN7976 ASME B18.6.3
*Carbon steel C1018-1022, alloy steel,harden.
*Stainless steel SUS201 SUS304(18-8),SUS316 and SUS410 etc .
*Zinc Galvanized/H.D.G/Dacromet etc.
Plain with passivation.
The minimum surface hardness after heat treament shall be 450HV.
The core hardness shall be 270HV-370HV.
Apply to 0.015″ to 0.05″ thickness sheet metal fastening to metal,wood, plastic,fiberglass etc. material.
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