As responded to, there are many variations on the self-taping screws
including my favorite for plywood and light gauge steel - the "Plymetal
Drillers" which pull the plywood tight to the steel.
I generally just specify TEK to mean any self-tapping screw to secure to
hot-rolled sections. So far, no complaints.
From: George Richards, P.E. [mailto:george(--nospam--at)BORM.com]
Sent: Tuesday, February 01, 2000 2:47 PM
Subject: RE: Tek Screws
I specify three companies. There is no generic spec that we know of. We do
call to verify that the screws meet the requirements of SAE J-78.
From: Zachary Goswick [mailto:ZachG(--nospam--at)angusyoung.com]
Sent: Tuesday, February 01, 2000 2:25 PM
Subject: Tek Screws
Does anybody know if there is a standard that can be specified for self
drilling screws. I am looking at diaphragm deck fasteners. The
diaphragm deck manual published by the Steel Deck Institute specifically
calls out ITWBuildex-TEK screws. This is a trade name. I want to leave
the option open for other (possible more available) trade names, but I
can't find a standard that screws are all manufactured to. If one is
not in existence, I don't want to be forced into using a specific trade
name, so I would probably call out a minimum shear strength and diameter
for the screws. Does anybody have comments on the best way to call this