| FASTENER LENGTH | 0.316 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| HEAD HEIGHT | 0.036 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| HEAD STYLE | WATERTIGHT |
| HEAD MAJOR DIAMETER | 0.351 INCHES MINIMUM AND 0.367 INCHES MAXIMUM |
| HOLE DEPTH | 0.172 INCHES MINIMUM AND 0.182 INCHES MAXIMUM |
| HOLE DIAMETER | 0.127 INCHES MINIMUM AND 0.131 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | G.M. 4058-M FSCM 11862 MFR REF 1ST MATERIAL RESPONSE OR G.M. 4244-M FSCM 11862 MFR REF 1ST MATERIAL RESPONSE OR SAE ASSN STD 2ND MATERIAL RESPONSE OR SAE ASSN STD 3RD MATERIAL RESPONSE OR SAE ASSN STD 4TH MATERIAL RESPONSE OVERALL |
| MATERIAL | COPPER ALLOY OR COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| SHANK DIAMETER | 0.180 INCHES MINIMUM AND 0.184 INCHES MAXIMUM |
| SHANK STYLE | TUBULAR |