How to Guide
1.  
CONDITION 2 – INTERIOR MOUNTED 4X4 POST TO 2X RIM
CONDITION 3 – INTERIOR MOUNTED 4X4 CORNER POST TO 2X RIM
FASTENMASTER TECHNICAL BULLETIN
For this condition, use the  
6-1/4" ThruLOK fastener 
1. Install first screw 1" in from the edge of 
the post and 2" (+/- 1/4") from the 
top of the rim board
2. Install second screw 1" in from the other 
edge of the post and 3" (+/- 1/4") 
from the top of the rim board
3. Install third screw in the center of the 
post and 2" (+/- 1/4") from the 
bottom of the rim board 
CONDITION 1 – EXTERIOR MOUNTED 4X4 POST TO 2X RIM
For this condition, use the  
6-1/4" 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 other 
edge of the post and 3" (+/- 1/4") 
from the bottom of the rim board
3. Install third screw 1" in from the edge 
of the post and 2" (+/- 1/4") from the 
bottom of the rim board
For this condition, use the  
6-1/4" ThruLOK fastener 
1. Install first screw 1" in from the edge of 
the post and 2" (+/- 1/4") from the 
top of the rim board
2. Install second screw 1" in from the other 
edge of the post and 2" (+/- 1/4") 
from the bottom of the rim board
3. Install third screw centered on both the 
post and the rim board




