The Washer,key, cataloged under National Stock Number 5310-00-461-7445, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-461-7445 |
| Primary Part Number | 177540-1 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.969 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.531 INCHES NOMINAL IN |
| Material Thickness | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| External Key Quantity | 1 |
| Internal Prebent Key Length | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OVERALL |
| Hole Diameter | 2.025 INCHES MINIMUM AND 2.050 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 |
|---|---|
| 177540-1 PRIMARY | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
NSN 5310-00-461-7445 is a Washer,key, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-461-7445 has 1 manufacturer part number on file: 177540-1 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
Key specifications for 177540-1: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.219 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.969 INCHES NOMINAL IN; Style Designator: KEY. 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.