The Key,socket Head Screw, cataloged under National Stock Number 5120-01-263-6436, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-263-6436 |
| Primary Part Number | 7122A53 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Short Arm Length | 1.406 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN |
| Wrenching Surface Size | 0.438 INCHES NOMINAL BOTH ENDS IN |
| Style Designator | L-HANDLE |
| Long Arm Length | 7.406 INCHES MINIMUM AND 7.594 INCHES MAXIMUM IN |
| Specification/standard Data | 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Surface Treatment | OXIDE 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 |
|---|---|
| 7122A53 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| GGG-K-275 | 5/9 Secondary reference U.S. Government activity |
| B18.3 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5120-01-263-6436 is a Key,socket Head Screw, manufactured by Mcmaster-Carr Supply Co, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-263-6436 has 1 manufacturer part number on file: 7122A53 (Mcmaster-Carr Supply Co).
Key specifications for 7122A53: Short Arm Length: 1.406 INCHES MINIMUM AND 1.594 INCHES MAXIMUM IN; Wrenching Surface Size: 0.438 INCHES NOMINAL BOTH ENDS IN; Style Designator: L-HANDLE; Overall Length: 7.500 INCHES NOMINAL 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.