How to Guide

FASTENMASTER TECHNICAL BULLETIN
FMTECH-THRPOST (0914)
FastenMaster
®
and ThruLOK
®
are trademarks of OMG, Inc. Copyright © 2014 OMG, Inc.
All rights reserved. U.S. and International Patents Pending.
CONDITION 7 – INTERIOR MOUNTED 4X4 POST TO 2X RIM WITH BLOCKING
CONDITION 8 – INTERIOR MOUNTED 4X4 POST TO 2X RIM WITH SIDE BLOCKING
For this condition, use the
8" ThruLOK fastener
1. Install first screw in the center of the
post and 2" (+/- 1/4") from the top of
the rim board
2. Install second screw 1" in from the edge
of the post and 2" (+/- 1/4") from the
bottom of the rim board
3. Install third screw 1" in from the other
edge of the post and 3" (+/- 1/4")
from the bottom of the rim board
For this condition, use two, 6-1/4"
and one, 8" ThruLOK fasteners
1. Install first 6-1/4" screw 1" in from the
edge of the post and 2" (+/- 1/4")
from the top of the rim board
2. Install second 6-1/4" screw 1" in from
the other edge of the post and 2"
(+/- 1/4") from the bottom of the
rim board
3. Install 8" screw centered on both the
post and the rim board
GENERAL FASTENING GUIDELINES
Design values used to create the fastening patterns in this
bulletin were derived from individual fastener testing under
ICC Acceptance Criteria AC233 and reported in ICC-ES Evaluation
Report ESR-1078.
The connection details shown in this bulletin apply specifically
to 4x4 posts and 2x8, 2x10 or 2x12 rims and/or joists.
For different dimension lumber, wood species of lower density
than Hem Fir (SYP and DF are higher density and therefore
approved), or post heights greater than 37.5" off the top of
the joists, please contact FastenMaster to determine the proper
fastening solution.
ThruLOK is coated with mechanically applied zinc in accor-
dance with ASTM B695, Class 55. This is compliant with the
current International Residential Code
®
for use in ACQ pressure
treated wood.
As with other bolted connections using wet treated wood, the
nut should be inspected and tightened if needed after initial
drying period.
The connection details in this bulletin are an acceptable means
of transferring the load from guard post to rim joist only.
Additional blocking or hardware may be required to transfer
loads from the rim to deck joists.
Fastening patterns assume the following: All components are
used (screw, washer and nut), holes are not pre-drilled, and
posts are loaded in an outward direction from the deck.
For questions regarding these or other connections, please contact
FastenMaster Technical Support at www.fastenmaster.com or by
calling 800
.
518
.
3569.