The Washer,spring Tension, cataloged under National Stock Number 5310-01-034-7309, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-034-7309 |
| Primary Part Number | 3281-1 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Material Thickness | 0.025 INCHES MINIMUM AND 0.025 INCHES MINIMUM AND 0.027 INCHES MAXIMUM0.027 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 3281-1 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 3281-1 | 5/9 Secondary reference Fl Aerospace Corp Janitrol Aero Div/general Design |
NSN 5310-01-034-7309 is a Washer,spring Tension, manufactured by Grimes Aerospace Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-034-7309 has 1 manufacturer part number on file: 3281-1 (Grimes Aerospace Company).
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-193-6426, 5930-01-363-6413. Verify interchangeability with system specifications before substitution.
Key specifications for 3281-1: Overall Height: 0.080 INCHES NOMINAL0.080 INCHES NOMINAL IN; Material Thickness: 0.025 INCHES MINIMUM AND 0.025 INCHES MINIMUM AND 0.027 INCHES MAXIMUM0.027 INCHES MAXIMUM IN; Material: STEEL CORROSION RESISTING OVERALL. 2 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.