The Washer,key, cataloged under National Stock Number 5310-00-007-0078, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-007-0078 |
| Primary Part Number | 3874371 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| External Prebent Key Length | 0.500 INCHES NOMINAL IN |
| Overall Distance Including Keys | 3.830 INCHES NOMINAL IN |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Material Thickness | 0.090 INCHES NOMINAL IN |
| External Key Quantity | 8 |
| External Prebent Key Width | 0.220 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.500 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 |
|---|---|
| 3874371 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 3874371 | 3/9 Design control — primary reference General Motors Corp |
| 3874371 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 5310-00-007-0078 is a Washer,key, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-007-0078 has 1 manufacturer part number on file: 3874371 (General Motors Llc Dba General Motors Llc).
Key specifications for 3874371: External Prebent Key Length: 0.500 INCHES NOMINAL IN; Overall Distance Including Keys: 3.830 INCHES NOMINAL IN; Outside Diameter: 3.000 INCHES NOMINAL IN; Material Thickness: 0.090 INCHES NOMINAL IN. 8 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.