The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-127-0893, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-127-0893 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | PN3.06 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OR PS13102 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Height | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED BOTH SIDES |
| Material Document and Classification | AMS 5647 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.057 INCHES MINIMUM AND 4.072 INCHES MAXIMUM IN |
| Material Thickness | 0.063 INCHES NOMINAL IN |
| Shoulder Diameter | 3.863 INCHES MINIMUM AND 3.864 INCHES MAXIMUM IN |
| Recess Diameter | 3.678 INCHES MINIMUM AND 3.698 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM OVERALL |
| Material | STEEL COMP 316L OVERALL |
| Hole Diameter | 3.629 INCHES MINIMUM AND 3.630 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 5004352 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-127-0893 is a Washer,shouldered and Recessed, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-610-4666. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-127-0893: Surface Treatment Document and Classification: PN3.06 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OR PS13102 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN; Style Designator: SHOULDERED AND RECESSED BOTH SIDES; Material Document and Classification: AMS 5647 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.