The Key,socket Head Screw, cataloged under National Stock Number 5120-01-006-1768, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5120-01-006-1768 |
| Primary Part Number | 990C991H09 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| Short Arm Length | 0.400 INCHES NOMINAL IN |
| Wrenching Surface Size | 0.109 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | L-HANDLE |
| Long Arm Length | 2.120 INCHES NOMINAL IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Surface Treatment | CADMIUM OVERALL |
| 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 |
|---|---|
| 990C991H09 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| 74005-7B | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| GGG-K-275 | 5/9 Secondary reference U.S. Government activity |
| GGG-K-275 TY1CL1 | 5/9 Secondary reference U.S. Government activity |
| 990C991 | 5/1 Secondary reference Northrop Grumman Systems Corporation Dba Electronic Systems |
NSN 5120-01-006-1768 is a Key,socket Head Screw, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-006-1768 has 2 manufacturer part numbers on file: 990C991H09 (Northrop Grumman Systems Corporation Dba Electronic Systems), 74005-7B (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 990C991H09: Short Arm Length: 0.400 INCHES NOMINAL IN; Wrenching Surface Size: 0.109 INCHES NOMINAL BOTH ENDS IN; Style Designator: L-HANDLE; Long Arm Length: 2.120 INCHES NOMINAL IN. 7 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.