The Washer,flat, cataloged under National Stock Number 5310-01-341-3139, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Corp Electronic Systems Defensive System Div. 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 | 5310-01-341-3139 |
| Primary Part Number | 833443-003 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Corp Electronic Systems Defensive System Div |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | L-P-392 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC ACETAL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.116 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Thickness | 0.035 INCHES MINIMUM AND 0.045 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 |
|---|---|
| 833443-003 PRIMARY | Northrop Grumman Corp Electronic Systems Defensive System Div (USA) |
NSN 5310-01-341-3139 is a Washer,flat, manufactured by Northrop Grumman Corp Electronic Systems Defensive System Div, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-341-3139 has 1 manufacturer part number on file: 833443-003 (Northrop Grumman Corp Electronic Systems Defensive System Div).
Key specifications for 833443-003: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.250 INCHES NOMINAL IN; Material Document and Classification: L-P-392 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.