The Washer,spring Tension, cataloged under National Stock Number 5310-01-391-2932, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-391-2932 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hardness Rating | 350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 380.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM |
| Style Designator | SPRING TENSION |
| Material Document and Classification | ASTM B194,1/4 HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Material Thickness | 0.011 INCHES MINIMUM AND 0.013 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | COPPER ALLOY 172 OVERALL |
| Hole Diameter | 0.203 INCHES MINIMUM AND 0.208 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 |
|---|---|
| MIL-W-12133/3 | 4/1 Identification reference U.S. Government activity |
| M12133/3-203P | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-391-2932 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5310-01-394-6042, 5310-01-396-4240, 5310-01-407-0524. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-391-2932: Overall Height: 0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN; Hardness Rating: 350.0 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM AND 380.0 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM; Style Designator: SPRING TENSION; Material Document and Classification: ASTM B194,1/4 HARD ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.