| FASTENER LENGTH | 1.375 INCHES MINIMUM AND 1.405 INCHES MAXIMUM |
| GRIP DIAMETER | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM |
| GRIP LENGTH | 0.802 INCHES MINIMUM AND 0.822 INCHES MAXIMUM |
| HARDNESS RATING | |
| HAZARDOUS SUBSTANCES | CADMIUM |
| HEAD HEIGHT | 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| HEAD STYLE | DISHED HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | |
| MATERIAL | |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.3750 INCHES |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, SHEAR, HEXAGON HEAD, 108 KSI SHEAR, LONG THREAD |
| SINGLE SHEAR STRENGTH | 180000 POUNDS PER SQUARE INCH |
| SPECIAL FEATURES | MATERIAL - ALLOY STEEL - 4140 (UNS G41400) PER AMS6382 OR AMS6349, 4340 (UNS G43406)PER AMS6415 OR AMS6484, OR 8740 (UNS G87400) PER AMS6322, AMS6325 OR AMS6327. FINISH - CADMIUM PLATING PER AMS-QQ-P-416, TYPE II, CLASS 2. BOLTS ARE NOT TO BE PICKLED. IMMEDIATELY AFTER PLATING (WITHIN 1 HOUR) BAKE AT 375 F PLUS/MINUS 25 F FOR A MINIMUM OF 23 HOURS. HEAT TREATMENT - 180 TO 200 KSI ULTIMATE TENSILE; 108 KSI MIN ULTIMATE SHEAR. HARDNESS: 39-43 HRC. UNDRILLED. HEADS ARE DIMPLED ON NAS1953 THRU NAS1958 ONLY. |
| SPECIFICATION/STANDARD DATA | 80205-NAS1953-1970 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE FINISH | UNABLE TO DECODE |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | UNABLE TO DECODE |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.578 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |
| WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |