INSTALLATION IN STEEL
The following guidelines are based on the installation of a fastener in ASTM A 36 structural
steel with the point fully penetrating the steel member. Recommended steel material thickness
ranges from a minimum of 1/8" to a maximum of 3/8". For use in higher strength structural
steel, applications where the point does not penetrate the steel member, or a thickness of steel
greater than 3/8", job site performance tests are recommended.
BASE MATERIAL THICKNESS
Steel base materials should be a minimum of 1/8" in thickness.
EDGE DISTANCE
For installations in A 36 steel, 1/2" is the recommended minimum edge distance.
SPACING
The recommended minimum distance between fastenings is 1-1/2" center to center for
installations in ASTM A 36 steel.
FASTENER LENGTH SELECTION IN STEEL
For permanent applications when using pins in steel, first determine the thickness of the fixture
to be fastened. To this, add the thickness of the steel base material plus a minimum of 1/4" to
allow for proper point penetration. This will be the minimum fastener shank length required.
Do not select a fastener length longer than that required for the application. An excessively
long shank can burnish or polish the hole created in the steel resulting in a reduction in
load capacity.
For removable applications with threaded studs, the shank length required is equal to the
thickness of the steel base material plus a minimum of 1/4" to allow for proper point
penetration. This will be the minimum fastener shank length required. Do not select a shank
length longer than that required for the application. An excessively long shank can burnish or
polish the hole created in the steel resulting in a reduction in load capacity. To determine the
minimum threaded length, add the thickness of the fixture and the nut / washer thickness. The
nut and washer thickness is equal to the nominal thread diameter.
Do not over tighten threaded studs, the maximum tightening torque is listed in the table below.
Use of a nut setter is recommended to reduce the possibility of over tightening the fasteners. For
critical applications, perform a job site test.
MODEL
P3801
CAT. NO.
52008/Deluxe Kit
6
P
3801
1/8"
1/2"
1-1/2"
