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SS Fasteners for Use in Stainless Steel Sheets from the PEM Fasteners catalogue, page 233.
| Property | Value |
|---|---|
| Thread Size | .250-20 (1/4-20) |
| Type | F4 |
| Thread Code | 0420 |
| Shank Code | 3 |
| A (Shank) Max. | .120 in |
| Sheet Thickness | .125-.155 |
| Hole Size In Sheet +.003 −.000 | .344 in |
| C Max. | .343 in |
| H Nom. | .375 in |
| Min. Dist. Hole ℄ To Edge | .34 in |