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 Ma 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.)
