The Washer,shouldered, cataloged under National Stock Number 5310-01-377-3271, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Aztec Manufacturing, Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-377-3271 |
| Primary Part Number | N037518S |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Aztec Manufacturing, Inc |
| Status | ACTIVE |
| Outside Diameter | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Material | RUBBER CHLOROPRENE CLASS CR OVERALL |
| Hole Diameter | 0.090 INCHES MINIMUM AND 0.150 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 |
|---|---|
| N037518S PRIMARY | Aztec Manufacturing, Inc (USA) |
| Reference | Meaning |
|---|---|
| 1576AS301 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5310-01-377-3271 is a Washer,shouldered, manufactured by Aztec Manufacturing, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-377-3271 has 1 manufacturer part number on file: N037518S (Aztec Manufacturing, Inc).
Key specifications for N037518S: Overall Height: 0.088 INCHES MINIMUM AND 0.118 INCHES MAXIMUM IN; Outside Diameter: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN; Shoulder Diameter: 0.165 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN; Special Features: WASHER CONTAINS BACKING MEDIA MADE FROM ST0304, CORROION RESISTING STEEL. 4 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.