The Washer,key, cataloged under National Stock Number 5310-00-612-0264, 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 15 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 | 5310-00-612-0264 |
| Primary Part Number | 20-91154-3 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| FSC Application Data | AILERON POWER CONTROL,CYLINDER LOCK |
| Internal Straight Key Width | 0.180 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.418 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 1 CL B FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.840 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-685 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.560 INCHES NOMINAL IN |
| Material Thickness | 0.036 INCHES NOMINAL IN |
| External Straight Key Width | 0.260 INCHES NOMINAL IN |
| External Key Quantity | 1 |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 4130 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 1.074 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 |
|---|---|
| 20-91154-3 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-00-612-0264 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-612-0264 has 1 manufacturer part number on file: 20-91154-3 (The Boeing Company Div Defense).
Key specifications for 20-91154-3: FSC Application Data: AILERON POWER CONTROL,CYLINDER LOCK; Internal Straight Key Width: 0.180 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.418 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 TY 1 CL B FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 15 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.