The Washer,key, cataloged under National Stock Number 5310-00-446-2879, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-446-2879 |
| Primary Part Number | 10-161390-2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2400-2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| External Prebent Key Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Heat Treatment | AS FABRICATED |
| Material Document and Classification | AMS5042 OR AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| External Key Quantity | 3 |
| Surface Treatment | CADMIUM OVERALL |
| External Prebent Key Width | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.880 INCHES MINIMUM AND 0.890 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 |
|---|---|
| 10-161390-2 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 10-161390-2 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5310-00-446-2879 is a Washer,key, manufactured by Unison Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-446-2879 has 1 manufacturer part number on file: 10-161390-2 (Unison Industries Llc).
Key specifications for 10-161390-2: Surface Treatment Document and Classification: AMS2400-2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; External Prebent Key Length: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Heat Treatment: AS FABRICATED; Material Document and Classification: AMS5042 OR AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.