The Key,socket Head Screw, cataloged under National Stock Number 5120-00-232-4598, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-232-4598 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Status | ACTIVE |
| Short Arm Length | 0.875 INCHES MAXIMUM IN |
| Wrenching Surface Size | 0.133 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | L-HANDLE |
| Long Arm Length | 3.468 INCHES MINIMUM IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 2 CLASS |
| Wrenching Surface Shape | SPLINE BOTH ENDS EXTERNAL |
| Wrenching Surface Flute Quantity | 6 |
| 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 |
| Reference | Meaning |
|---|---|
| S-133-6L | 5/9 Secondary reference Mahalo Industries Inc Dba Bristol Wrench Co. |
| S133L | 5/9 Secondary reference Bristol Babcock Inc Instruments-Systems Div Sub of Babcock Intl Inc |
| GGG-K-275 TY2CL2 | 5/1 Secondary reference U.S. Government activity |
| GGG-K-275 | 4/1 Identification reference U.S. Government activity |
NSN 5120-00-232-4598 is a Key,socket Head Screw, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
6 possible matches (shared part number, not a government interchangeability claim): 5120-00-243-1771, 5120-00-293-0346, 5120-00-481-9055. Verify interchangeability with system specifications before substitution.
Key specifications for 5120-00-232-4598: Short Arm Length: 0.875 INCHES MAXIMUM IN; Wrenching Surface Size: 0.133 INCHES NOMINAL BOTH ENDS IN; Style Designator: L-HANDLE; Overall Length: 3.656 INCHES MAXIMUM 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.