The Washer,spring Tension, cataloged under National Stock Number 5310-01-263-4347, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eldec Aerospace Corp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-263-4347 |
| Primary Part Number | WA25-01 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eldec Aerospace Corp |
| Status | ACTIVE |
| Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.276 INCHES NOMINAL IN |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Hole Diameter | 0.126 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WA25-01 | Associated Spring Us, Llc Div Corry (USA) |
| WA25-01 | Roller Bearing Co of America, Inc Div Pic Design (USA) |
| WA25-01 PRIMARY | Eldec Aerospace Corp (USA) |
| Reference | Meaning |
|---|---|
| SP-73205 | 5/9 Secondary reference Rolex Company Dba Rolex Company Div Rolex Company |
| SP-73205 | C/1 Advisory reference — outside the item-of-supply concept Matthew Warren, Inc. Div Maryland Precision Spring |
NSN 5310-01-263-4347 is a Washer,spring Tension, manufactured by Eldec Aerospace Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-263-4347 has 3 manufacturer part numbers on file: WA25-01 (Associated Spring Us, Llc Div Corry), WA25-01 (Roller Bearing Co of America, Inc Div Pic Design), WA25-01 (Eldec Aerospace Corp).
Key specifications for WA25-01: Overall Height: 0.025 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM; Style Designator: SPRING TENSION; Outside Diameter: 0.276 INCHES NOMINAL IN. 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.