The Washer,spring Tension, cataloged under National Stock Number 5310-01-628-2091, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dante Valve Company. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Dante Valve Company (CAGE 5P967) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-628-2091 |
| Primary Part Number | BS2523 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| 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 |
|---|---|
| BS2523 PRIMARY | Dante Valve Company (USA) |
| D60-2.5-000 ITEM 20 | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| D60-2.5-000 | D/9 Drawing number reference only Dante Valve Company |
NSN 5310-01-628-2091 is a Washer,spring Tension, manufactured by Dante Valve Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-628-2091 has 2 manufacturer part numbers on file: BS2523 (Dante Valve Company), D60-2.5-000 ITEM 20 (Dante Valve Company).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-702-6530. Verify interchangeability with system specifications before substitution.
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.