This square shape makes Acme more suitable for carrying loads. The surface of precision Acme is smoother, and it is more efficient than general purpose Acme.
Specs
ACME Threaded Rod Specifications
Width
Threads Per Inch
Length
3/8"
12
36"
1/2"
10
36"
5/8"
8
36"
3/4"
6
36"
7/8"
6
36"
1"
5
36"
1-1/4"
5
36"
1-1/2"
4
36"
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304 Stainless Steel Threaded Rod - National Coarse