| ARMY, UNITED STATES DEPARTMENT OF THE | 19204 |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.573 INCHES MINIMUM AND 0.578 INCHES MAXIMUM |
| FASTENER LENGTH | 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER EXTENDED WASHER |
| HEAD DIAMETER | 0.685 INCHES MINIMUM AND 0.687 INCHES MAXIMUM |
| HEAD HEIGHT | 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.730 INCHES MINIMUM AND 0.740 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| FEATURES PROVIDED | UNFINISHED HEAD |
| NONSTANDARD THREAD PITCH DIAMETER | +0.2217/+0.2229 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| SPECIAL FEATURES | THD END 0.125 IN. RADIUS |
| MATERIAL | STEEL OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-T-580 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE MANGANESE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE M,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES DESIGNATOR | UNS |
| An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of .19 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of . 15 inch ( . 38 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE. |
