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- Designed for high load applications. Available with rib, key or full hex features for high torque applications.
- Both UNC and UNF threads available in No. 10 and larger thread sizes. Check for availability of other grip ranges and designs.
Unit of Measure
Thread Size |
N/A 5/16-18 |
Grip Range |
N/A .425 - .500 in |
Identification Mark |
N/A 5 Rad. |
A ± .015 |
N/A 1.187 in |
B ± .015 |
N/A
.665 in
![]() Loading zoom |
C Nom. |
N/A .062 in |
øD + .000 - .004 |
N/A .413 in |
E Max. |
N/A .505 in |
F + .005 -.000 |
N/A .120 in |
G Max. |
N/A .040 in |
P - Keyway Width + .003 -.000 |
N/A .128 in |
H - Keyway Height |
N/A .097 - .102 in |
Install Drill Size Ref. |
N/A Z |
Install Hole Size Min. |
N/A .413 in |
Install Hole Size Max. |
N/A .423 in |
Pull Up Factor |
N/A .120 in |
Weight per 1000 |
N/A 24.9 lb |
Fastening |
N/A Uninstalled |
Thread Specification |
N/A 3B per ASME B1.1 |
Standard Material |
N/A Low Carbon Steel |
Standard Finish |
N/A Cadmium Plate - .0003” minimum thickness per SAE AMS-QQ-P-416 Class 2, Type II |
CAD Supplier |
N/A PennEngineering® (Atlas®) |
Inventory |