The Washer,spring Tension, cataloged under National Stock Number 5310-01-426-7543, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-426-7543 |
| 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 H ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Material Thickness | 0.0137 INCHES MINIMUM AND 0.0163 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 172 OVERALL |
| Hole Diameter | 0.266 INCHES MINIMUM AND 0.271 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 |
| M12133/3-266 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-426-7543 is a Washer,spring Tension, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-426-7543: Overall Height: 0.039 INCHES MINIMUM AND 0.045 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 H ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 7 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.