The Washer,shouldered, cataloged under National Stock Number 5310-00-902-0525, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Air Armament Center/ En. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-902-0525 |
| Primary Part Number | 68B7167 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Air Armament Center/ En |
| Status | ACTIVE |
| Shoulder Height | 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Thickness | 0.050 INCHES NOMINAL IN |
| Shoulder Diameter | 0.273 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| Hole Diameter | 0.191 INCHES MINIMUM AND 0.197 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 |
|---|---|
| 291AS181-2 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 68B7167 PRIMARY | Air Armament Center/ En (USA) |
| Reference | Meaning |
|---|---|
| 2820373-501 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-902-0525 is a Washer,shouldered, manufactured by Air Armament Center/ En, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-902-0525 has 2 manufacturer part numbers on file: 291AS181-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 68B7167 (Air Armament Center/ En).
Key specifications for 68B7167: Shoulder Height: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Style Designator: SHOULDERED; Material Document and Classification: AMS 3651 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.500 INCHES NOMINAL IN. 8 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.