The Washer,flat, cataloged under National Stock Number 5310-01-374-1813, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-374-1813 |
| Primary Part Number | 4M36-02134 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541,CL C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 1230 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN |
| Thickness | 0.081 INCHES MINIMUM AND 0.101 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 |
|---|---|
| 4M36-02134 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10381104 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-374-1813 is a Washer,flat, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-374-1813 has 1 manufacturer part number on file: 4M36-02134 (The Boeing Company Div Defense).
Key specifications for 4M36-02134: Surface Treatment Document and Classification: MIL-C-5541,CL C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ANODIZE OVERALL. 9 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.