The Washer,finishing, cataloged under National Stock Number 5310-00-271-8508, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-271-8508 |
| Item Name | Washer,finishing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM |
| Style Designator | FINISHING |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Thickness | 0.012 INCHES NOMINAL IN |
| Recess Diameter | 0.300 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1055 OR STEEL COMP 1060 OVERALL |
| Hole Diameter | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Recess Angle | 100.0 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 |
|---|---|
| A3236 | 5/9 Secondary reference Tinnerman Palnut Engineered Products, Inc. |
| A3236-012-24A | 3/9 Design control — primary reference Tinnerman Palnut Engineered Products, Inc. |
NSN 5310-00-271-8508 is a Washer,finishing, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2920-00-455-5712, 5310-00-596-4702. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-271-8508: Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM; Style Designator: FINISHING; Outside Diameter: 0.500 INCHES NOMINAL IN; Material Thickness: 0.012 INCHES NOMINAL IN. 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.