The Washer,lock, cataloged under National Stock Number 5310-00-031-2669, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Safran Electronics & Defense (ex Safran Electronics & Defense Cockpit Solutions). Government technical data includes 7 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-031-2669 |
| Primary Part Number | MP5000-212-4 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Safran Electronics & Defense (ex Safran Electronics & Defense Cockpit Solutions) |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.293 INCHES NOMINAL IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.172 INCHES NOMINAL IN |
| 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 |
|---|---|
| MP5000-212-4 | Safran Electronics & Defense (ex Safran Electronics & Defense Cockpit Solutions) (FRA) |
| Reference | Meaning |
|---|---|
| 52022082-000 | 3/2 Design control — primary reference U.S. Government activity |
| LYC503-42 | 5/2 Secondary reference U.S. Government activity |
| MP5000-212-4 | 5/9 Secondary reference U.S. Government activity |
| 5000-212-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-031-2669 is a Washer,lock, manufactured by Safran Electronics & Defense (ex Safran Electronics & Defense Cockpit Solutions), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-031-2669 has 1 manufacturer part number on file: MP5000-212-4 (Safran Electronics & Defense (ex Safran Electronics & Defense Cockpit Solutions)).
Key specifications for MP5000-212-4: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.293 INCHES NOMINAL IN; Material Thickness: 0.040 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.