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LN Self-Locking Fasteners from the PEM Fasteners catalogue, page 108.
| Property | Value |
|---|---|
| Thread Size | 1/4-20 |
| Type | FE |
| Thread Code | 0420 |
| A (Shank) Max. | .060 in |
| Sheet Thickness | .059 - .070 |
| Hole Size In Sheet +.003 −.000 | .344 in |
| C +.000 −.005 | .343 in |
| D Max. | .318 in |
| E ±.005 | .384 in |
| T +.015 −.000 | .120 in |
| Min. Dist. Hole ℄ to Edge | .28 in |
| Max. Hole In Attached Parts | .270 in |