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- Designed for high load applications. Countersunk feature allow fastener to be installed flush with sheet surface.
- 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 .331 - .406 in |
Identification Mark |
N/A 3 Rad. |
B Ref. |
N/A
.656 in
![]() Loading zoom |
C Max. |
N/A .104 in |
øD + .000 - .004 |
N/A .413 in |
E Max. |
N/A .505 in |
F + .005 -.000 |
N/A .120 in |
L ± .0151 | N/A 1.468 in |
K Ref. |
N/A .565 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 31.9 lb |
Fastening |
N/A Uninstalled |
Thread Specification |
N/A 3B per ASME B1.1 |
Standard Material |
N/A Alloy No. 260 Brass |
Standard Finish |
N/A None - bright as machined |
CAD Supplier |
N/A PennEngineering® (Atlas®) |
Inventory |
0 |
- 1 The “L” dimension is the height of the installed stud at max grip. The height of the stud will increase if it is installed into thinner material. To calculate “actual L” use this formula: max grip - actual grip + L = “actual L”