The Washer,key, cataloged under National Stock Number 5310-01-497-7024, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-497-7024 |
| Primary Part Number | ST4M199C6B |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-763,COMP 302 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COMP 304 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN |
| Material Thickness | 0.029 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 0.375 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 |
|---|---|
| ST4M199C6B | Rankin T G Co Inc (USA) |
| ST4M199C6B PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-497-7024 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-497-7024 has 2 manufacturer part numbers on file: ST4M199C6B (Rankin T G Co Inc), ST4M199C6B (The Boeing Company Div Defense).
Key specifications for ST4M199C6B: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY; Material Document and Classification: QQ-S-763,COMP 302 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-763,COMP 304 FED SPEC 2ND MATERIAL RESPONSE OVERALL; Outside Diameter: 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM IN. 8 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.