The Washer,key, cataloged under National Stock Number 5310-00-559-9304, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-559-9304 |
| Primary Part Number | 612A268P2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.220 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5040 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5042 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.800 INCHES MINIMUM AND 1.820 INCHES MAXIMUM IN |
| Material Thickness | 0.043 INCHES MINIMUM AND 0.053 INCHES MAXIMUM IN |
| External Key Quantity | 2 |
| Internal Prebent Key Length | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| External Prebent Key Width | 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OVERALL |
| Hole Diameter | 1.380 INCHES MINIMUM AND 1.400 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 |
NSN 5310-00-559-9304 is a Washer,key, manufactured by General Electric Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-559-9304 has 2 manufacturer part numbers on file: 612A268P2 (General Electric Company), 612A268P2 (General Electric Company).
Key specifications for 612A268P2: Surface Treatment Document and Classification: AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.220 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN; Style Designator: KEY. 14 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.