The Washer,spring Tension, cataloged under National Stock Number 5310-00-778-9958, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Borg-Warner Corp. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-778-9958 |
| Primary Part Number | 3-46 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Borg-Warner Corp |
| Status | ACTIVE |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM |
| Outside Diameter | 0.875 INCHES NOMINAL IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM 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 |
|---|---|
| 133423 | Komatsu America Corp. (USA) |
| 878906 | Dana Off Highway Products, Llc (USA) |
| 3-46 PRIMARY | Borg-Warner Corp (USA) |
| Reference | Meaning |
|---|---|
| 3-46 | 5/9 Secondary reference Marysville Marine Distributors, Inc. |
| 878906 | 5/9 Secondary reference Clark Equipment Co |
| 133423 | 5/9 Secondary reference Komatsu American Intl Co |
| 3-46 | 5/9 Secondary reference Liberty Ventures Inti, Llc |
| 1P77513A | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| 1P77513A | 5/9 Secondary reference Ford Motor Company |
NSN 5310-00-778-9958 is a Washer,spring Tension, manufactured by Borg-Warner Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-778-9958 has 3 manufacturer part numbers on file: 133423 (Komatsu America Corp.), 878906 (Dana Off Highway Products, Llc), 3-46 (Borg-Warner Corp).
2 possible matches (shared part number, not a government interchangeability claim): 1650-00-784-5829, 5331-01-274-8073. Verify interchangeability with system specifications before substitution.
Key specifications for 3-46: Overall Height: 0.125 INCHES NOMINAL IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM; Outside Diameter: 0.875 INCHES NOMINAL IN; Material Thickness: 0.016 INCHES NOMINAL IN. 5 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.