The Washer,key, cataloged under National Stock Number 5310-01-347-2042, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-347-2042 |
| Primary Part Number | FT1761-10PT |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastener Technology Corp |
| Status | ACTIVE |
| Internal Straight Key Width | 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.066 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 | 0.310 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.022 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 631 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.195 INCHES MINIMUM AND 0.205 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 |
|---|---|
| FT1761-10PT PRIMARY | Fastener Technology Corp (USA) |
| Reference | Meaning |
|---|---|
| C100110-10PT | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-347-2042 is a Washer,key, manufactured by Fastener Technology Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-347-2042 has 1 manufacturer part number on file: FT1761-10PT (Fastener Technology Corp).
Key specifications for FT1761-10PT: Internal Straight Key Width: 0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.066 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.