The Washer,spring Tension, cataloged under National Stock Number 5310-01-052-7666, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barnes Group Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-052-7666 |
| Primary Part Number | W3917-042 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barnes Group Inc |
| Status | ACTIVE |
| Outside Diameter | 3.917 INCHES NOMINAL IN |
| Material Thickness | 0.042 INCHES NOMINAL IN |
| Hole Diameter | 3.047 INCHES NOMINAL IN |
| 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 |
|---|---|
| W3917-042 PRIMARY | Barnes Group Inc (USA) |
| Reference | Meaning |
|---|---|
| W3917-042 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| W3917-042 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 5900928 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-01-052-7666 is a Washer,spring Tension, manufactured by Barnes Group Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-052-7666 has 1 manufacturer part number on file: W3917-042 (Barnes Group Inc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-053-1008. Verify interchangeability with system specifications before substitution.
Key specifications for W3917-042: Overall Height: 0.258 INCHES NOMINAL IN; Outside Diameter: 3.917 INCHES NOMINAL IN; Material Thickness: 0.042 INCHES NOMINAL IN; Hole Diameter: 3.047 INCHES NOMINAL IN. 3 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.