The Washer,spring Tension, cataloged under National Stock Number 5310-00-202-0331, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-202-0331 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Material Thickness | 0.006 INCHES NOMINAL IN |
| Material | STEEL COMP 410 OR STEEL COMP 302 OVERALL |
| Hole Diameter | 0.260 INCHES MINIMUM AND 0.270 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 |
|---|---|
| SC-D-539702 | 5/9 Secondary reference U.S. Government activity |
| 3515-14-11-4102 | 3/9 Design control — primary reference Itw Shakeproof Automotive Products |
| 3515-14-11-4802 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
| SC-B-539596 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-00-202-0331 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-286-7901. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-202-0331: Overall Height: 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Material Document and Classification: AISI ASSN STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Material Thickness: 0.006 INCHES NOMINAL IN. 5 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.