The Washer,keyway, cataloged under National Stock Number 5310-01-465-1382, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastener Technology Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-465-1382 |
| Primary Part Number | FT1761-16PM |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastener Technology Corp |
| Status | ACTIVE |
| Internal Straight Key Width | 0.062 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.142 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-25043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.533 INCHES MAXIMUM IN |
| Material Thickness | 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.390 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 |
|---|---|
| FT1761-16PM | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| 589R328H01 | 3/2 Design control — primary reference U.S. Government activity |
| 589R328 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-465-1382 is a Washer,keyway, manufactured by Fastener Technology Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-465-1382 has 1 manufacturer part number on file: FT1761-16PM (Fastener Technology Corp).
Key specifications for FT1761-16PM: Internal Straight Key Width: 0.062 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.142 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY. 11 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.