Hex Lag Screws
Lag screws, also called lag bolts or coach screws, are large wood screws. The head is external hex and are driven with a wrench. Used for lag together lumber for framing, machinery to wood floors, and other heavy duty applications.
Diameter
(d)
s
 
k
 
ds
 
b (min)
 
M5
M6
8.00-7.64
10.00-9.64
3.88-3.13
5.00-4.52
0.6 x L
4.38-3.63
6.00-5.52
0.6 x L
M7
12.00-11.57
5.38-4.63
7.00-6.42
0.6 x L
M12
19.00-18.84
M8
13.00-12.57
5.88-5.13
8.00-7.42
0.6 x L
0.6 x L
0.6 x L
12.00-11.30
10.00-9.42
8.45-7.55
7.45-6.55
17.00-16.57
M10
M16
24.00-23.16
0.6 x L
16.00-15.30
10.45-9.55
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