HOW TO SELECT A POWDER
ACTUATED FASTENER
SAFETY PRECAUTIONS 12
DETERMINE FASTENER TYPE
Drive pins are used to directly fasten an object (permanent installation). Threaded
studs are used where the object fastened may later be removed or where shimming
is required. The following shows how to determine shank and thread length:
PERMANENT INSTALLATION
1A To Concrete 1B To Steel
of
Minimum Thickness Required
Shank Length = of Material + Penetration
(M) (P)
Minimum Thickness Thickness
Shank Length = of Material + of Steel + 1/4" min. pt.
(M) (S) allowance
Minimum Thickness of 1/4" min. pt.
Shank Length
=
Steel (S)
+
allowance
Thread Thickness Allowance*
Length = of Material + for
(A) (M) Nut &Washer
Shank Length = Required Penetration (P)
Thread Thickness Allowance*
Length = of Material + for
(A) (M) Nut &Washer
REMOVABLE INSTALLATION
2A To Concrete 2B To Steel
*Allowance for thickness of nut & washer = thread size (i.e. allow 1/4" for 1/4-20 thread, etc.)
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