The Washer,lock, cataloged under National Stock Number 5310-00-078-9041, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-078-9041 |
| Primary Part Number | 134P10252-1 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Treatment Document and Classification | G.S.S. 4302,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OR G.S.S. 9030,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OR G.S.S. 8050,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | QQ-A-200/2 FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.688 INCHES NOMINAL IN |
| Surface Treatment | ZINC AND CHROMATE OR PRIMER OR ANODIZE OR CADMIUM OVERALL |
| Material | ALUMINUM ALLOY 2014 AND STEEL COMP 4130 OVERALL |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.262 INCHES MAXIMUM 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 |
|---|---|
| 134P10252-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
NSN 5310-00-078-9041 is a Washer,lock, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-078-9041 has 1 manufacturer part number on file: 134P10252-1 (Northrop Grumman Systems Corporation).
Key specifications for 134P10252-1: Surface Treatment Document and Classification: G.S.S. 4302,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OR G.S.S. 9030,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OR G.S.S. 8050,FSCM 26512 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: QQ-A-200/2 FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 1ST MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Outside Diameter: 0.688 INCHES NOMINAL IN; Surface Treatment: ZINC AND CHROMATE OR PRIMER OR ANODIZE OR CADMIUM OVERALL. 6 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.