The Washer,recessed, cataloged under National Stock Number 5310-00-213-9281, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-213-9281 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Top Recess Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Bottom Recess Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Top Recess Angle | 45.0 DEGREES NOMINAL |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Material Thickness | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Bottom Recess Angle | 45.0 DEGREES NOMINAL |
| Surface Treatment | CHROMIUM OVERALL |
| Material | STEEL COMP 303 OVERALL |
| Hole Diameter | 0.282 INCHES MINIMUM AND 0.302 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 |
| Reference | Meaning |
|---|---|
| 1000083 | 3/9 Design control — primary reference Cipher Data Products Inc Oem Marketing Div |
NSN 5310-00-213-9281 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5999-00-883-5321, 6210-01-086-8754, 3439-01-130-8826. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-213-9281: Top Recess Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Bottom Recess Diameter: 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN; Top Recess Angle: 45.0 DEGREES NOMINAL; Style Designator: RECESSED BOTH SIDES. 11 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.