The Washer,spring Tension, cataloged under National Stock Number 5310-01-379-4102, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Thales Defense & Security Inc Dba Thales Communications Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Thales Uk Limited Secure Communications and Information Systems (CAGE K0162); Thales Defense & Security Inc Dba Thales Communications Inc (CAGE 23386) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-379-4102 |
| Primary Part Number | 21541-011-20 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Thales Defense & Security Inc Dba Thales Communications Inc |
| 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 |
|---|---|
| 21541-011-20 | Thales Uk Limited Secure Communications and Information Systems (GBR) |
| 21541-011-20 PRIMARY | Thales Defense & Security Inc Dba Thales Communications Inc (USA) |
| Reference | Meaning |
|---|---|
| 21541-011-20 | 5/9 Secondary reference Racal Radio Ltd |
NSN 5310-01-379-4102 is a Washer,spring Tension, manufactured by Thales Defense & Security Inc Dba Thales Communications Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-379-4102 has 2 manufacturer part numbers on file: 21541-011-20 (Thales Uk Limited Secure Communications and Information Systems), 21541-011-20 (Thales Defense & Security Inc Dba Thales Communications Inc).
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.