The Washer,key, cataloged under National Stock Number 5310-01-449-2529, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-449-2529 |
| Primary Part Number | 1127736-2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Style Designator | KEY |
| Outside Diameter | 0.323 INCHES NOMINAL IN |
| Material Thickness | 0.018 INCHES NOMINAL IN |
| Internal Prebent Key Length | 0.036 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.158 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 |
|---|---|
| 1127736-2 PRIMARY | Monadnock Company, the Dba Lisi Aerospace (USA) |
| Reference | Meaning |
|---|---|
| EF603W | 7/2 Vendor item drawing reference Leonardo Uk Limited (aw/eh101) |
NSN 5310-01-449-2529 is a Washer,key, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-449-2529 has 1 manufacturer part number on file: 1127736-2 (Monadnock Company, the Dba Lisi Aerospace).
Key specifications for 1127736-2: Style Designator: KEY; Outside Diameter: 0.323 INCHES NOMINAL IN; Material Thickness: 0.018 INCHES NOMINAL IN; Internal Prebent Key Length: 0.036 INCHES MAXIMUM IN. 6 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.