The Washer,key, cataloged under National Stock Number 5310-00-446-2730, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-446-2730 |
| Primary Part Number | 1601739 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Internal Straight Key Width | 0.375 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 1.062 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 3.220 INCHES MINIMUM AND 3.250 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Outside Diameter | 2.625 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.375 INCHES NOMINAL IN |
| External Key Quantity | 8 |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 2.375 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 |
|---|---|
| 1601739 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5310-00-446-2730 is a Washer,key, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-446-2730 has 1 manufacturer part number on file: 1601739 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5910-01-262-4132. Verify interchangeability with system specifications before substitution.
Key specifications for 1601739: Internal Straight Key Width: 0.375 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 1.062 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-16232,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 3.220 INCHES MINIMUM AND 3.250 INCHES MAXIMUM IN. 13 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.