| Item Name | Key Socket Head Screw |
| Federal Supply Group (FSG) | Hand Tools |
| Federal Supply Class (FSC) | 5120 Hand Tools Nonedged Nonpowered |
| National Item Identification Number (NIIN) | 00-778-1671 (007781671) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications, Sps Technologies Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| CRWY | WRENCHING SURFACE SHAPE | HEXAGON BOTH ENDS EXTERNAL |
| AJCG | TORQUE CAPACITY | 100.0 INCH-POUNDS NOMINAL |
| AJBR | WRENCHING SURFACE SIZE | 0.156 INCHES NOMINAL BOTH ENDS |
| MATT | MATERIAL | STEEL OVERALL |
| CQFM | HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM |
| STYL | STYLE DESIGNATOR | L-HANDLE |
| ABHP | OVERALL LENGTH | 4.188 INCHES MINIMUM AND 4.375 INCHES MAXIMUM |
| AHMP | LONG ARM LENGTH | 4.031 INCHES MINIMUM AND 4.219 INCHES MAXIMUM |
| AJAN | SHORT ARM LENGTH | 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| Relevant Components for NSN - 5120-00-778-1671, 5120007781671 | ||||
| 5110-00-004-3990 (5110000043990) | 5110-00-004-3991 (5110000043991) | 5110-00-009-5039 (5110000095039) | 5110-00-012-2250 (5110000122250) | |
| 5110-00-012-2251 (5110000122251) | 5110-00-012-2252 (5110000122252) | 5110-00-012-2257 (5110000122257) | 5110-00-012-2259 (5110000122259) | |
| 5110-00-014-2057 (5110000142057) | 5110-00-024-9681 (5110000249681) | 5110-00-028-9089 (5110000289089) | 5110-00-033-4846 (5110000334846) | |
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