The Key,socket Head Screw, cataloged under National Stock Number 5120-00-778-1671, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-778-1671 |
| Primary Part Number | 7897119P10 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Torque Capacity | 100.0 INCH-POUNDS NOMINAL IN |
| Short Arm Length | 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM |
| Wrenching Surface Size | 0.156 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | L-HANDLE |
| Long Arm Length | 4.031 INCHES MINIMUM AND 4.219 INCHES MAXIMUM IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7897119P10 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 05854-10 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| GGG-W-652 | 5/9 Secondary reference U.S. Government activity |
| GGG-K-275 | 5/9 Secondary reference U.S. Government activity |
| 663L-5/32 | 5/9 Secondary reference Allen Mfg Co Sub of Chicago Pneumatic Tool Co |
NSN 5120-00-778-1671 is a Key,socket Head Screw, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-00-778-1671 has 2 manufacturer part numbers on file: 7897119P10 (Lockheed Martin Corporation Div Rms), 05854-10 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 7897119P10: Torque Capacity: 100.0 INCH-POUNDS NOMINAL IN; Short Arm Length: 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM; Wrenching Surface Size: 0.156 INCHES NOMINAL BOTH ENDS IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.