The Washer,spring Tension, cataloged under National Stock Number 5310-01-388-8752, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Dante Valve Company (CAGE 5P967) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-388-8752 |
| Primary Part Number | B1023 |
| 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) |
| Part Number | Manufacturer |
|---|---|
| B1023 PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| B1023 | 3/9 Design control — primary reference Danco Valve Company |
| D1000FF ITEM 20 | C/1 Advisory reference — outside the item-of-supply concept Danco Valve Company |
| D1000 ITEM 13 | 5/9 Secondary reference Danco Valve Company |
NSN 5310-01-388-8752 is a Washer,spring Tension, manufactured by Dante Valve Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-388-8752 has 1 manufacturer part number on file: B1023 (Dante Valve Company).
1 possible match (shared part number, not a government interchangeability claim): 7021-01-521-3130. 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.