The Washer,flat, cataloged under National Stock Number 5310-01-157-4860, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Manassas. Government technical data includes 10 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 | 5310-01-157-4860 |
| Primary Part Number | 2825675-2 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lockheed Martin Corporation Div Rms - Manassas |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35,TY 2,2,3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.231 INCHES MINIMUM AND 0.241 INCHES MAXIMUM IN |
| Thickness | 0.032 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 |
|---|---|
| 2825675-2 PRIMARY | Lockheed Martin Corporation Div Rms - Manassas (USA) |
NSN 5310-01-157-4860 is a Washer,flat, manufactured by Lockheed Martin Corporation Div Rms - Manassas, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-157-4860 has 1 manufacturer part number on file: 2825675-2 (Lockheed Martin Corporation Div Rms - Manassas).
Key specifications for 2825675-2: Surface Treatment Document and Classification: QQ-P-35,TY 2,2,3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.