The Washer,key, cataloged under National Stock Number 5310-01-439-9537, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Watervliet Arsenal Div Business Development. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-439-9537 |
| Primary Part Number | 11579911 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Army, United States Department of the Dba Watervliet Arsenal Div Business Development |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.565 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 1.550 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| External Prebent Key Width | 0.160 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.630 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 11579911 PRIMARY | Army, United States Department of the Dba Watervliet Arsenal Div Business Development (USA) |
NSN 5310-01-439-9537 is a Washer,key, manufactured by Army, United States Department of the Dba Watervliet Arsenal Div Business Development, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-439-9537 has 1 manufacturer part number on file: 11579911 (Army, United States Department of the Dba Watervliet Arsenal Div Business Development).
Key specifications for 11579911: Distance From Centerline to Inside of Prebent Key: 0.565 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 1.550 INCHES NOMINAL IN; Material Thickness: 0.031 INCHES NOMINAL IN. 7 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.
NSN 5310-01-439-9537 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.