The Washer,spring Tension, cataloged under National Stock Number 5310-01-103-4031, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Arko Precision Machinist Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | Arko Precision Machinist Inc (CAGE 10083) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-103-4031 |
| Primary Part Number | 7N1066 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Arko Precision Machinist 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 |
|---|---|
| 7N1066 PRIMARY | Arko Precision Machinist Inc (USA) |
NSN 5310-01-103-4031 is a Washer,spring Tension, manufactured by Arko Precision Machinist Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-103-4031 has 1 manufacturer part number on file: 7N1066 (Arko Precision Machinist Inc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-117-9326. 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.