| EXTENDED WASHER DIAMETER | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.081 INCHES MINIMUM AND 0.101 INCHES MAXIMUM |
| GRIP LENGTH | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM |
| HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.398 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6485 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6487 ASSN STD 1ST MATERIAL RESPONSE OR SPS-M-107 FSCM 56878 MFR REF 2ND MATERIAL RESPONSE OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| SPECIFICATION/STANDARD DATA | 26512-GB511W6 MANUFACTURERS STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.535 INCHES MINIMUM AND 0.585 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |