Thread Size |
N/A .250-28 (1/4-28) |
Thread Type |
N/A Non-Locking |
Thread Code |
N/A 0428 |
A (Shank) Max. |
N/A
.060 in
 |
| Sheet Thickness1 | N/A .059 to .070 in |
Hole Size in Sheet + .003 - .000 |
N/A .344 in |
C + .000 - .005 |
N/A .343 in |
D Max. |
N/A .318 in |
E ± .005 |
N/A .384 in |
T + .015 -.000 |
N/A .120 in |
Min. Dist. Hole C/L to Edge |
N/A .28 in |
Max. Hole in Attached Parts |
N/A .270 in |
| For Use in Sheet Hardness2 | N/A HRB 70 / HB 125 or Less |
Thread Specification |
N/A Internal, ANSI B1.1, 2B |
Fastener Material |
N/A 300 Series Stainless Steel |
Standard Finish |
N/A Passivated and/or tested per ASTM A380 |
CAD Supplier |
N/A PennEngineering® (PEM®) |
- 1 In applications between the sheet thicknesses for your thread size, see last paragraph of installation data on page FE-6. Knurled collar may fracture if fastener is used in sheets thicker than the specified range and the screw is tightened beyond maximum
- 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.
