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A4 SuperTEK® Marine® 7
BMTSHW5.5-55-7
BI-METAL TEK® RANGE
BMTSHW5.5-55-7
Designed For - Fastening applications to super-heavy gauge cold-formed steel, hot-rolled steel, and extruded aluminium substrates.
Head Style - 5/16” hexagonal male socket.
Thread Form - 24 TPI (w/ V-fluting).
Drill Point - SuperTEK® 7 (Min.
4.
0mm – Max.
18.
0mm).
Material Grade - AISI C1022 (hardened) carbon steel self-piercing tip brazed to AISI316 / EN 1.
4401 / A4-50 stainless steel body and head.
Additional Coating - 5µm electro deposited zinc (w/ blue dichromate passivation).
Drill Speed - 1500-2500 RPM.
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