The Washer,recessed, cataloged under National Stock Number 5310-01-124-1267, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-124-1267 |
| Primary Part Number | 65126-11236-102 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8,TEMPER T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.375 INCHES NOMINAL IN |
| Recess Depth | 0.029 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Recess Diameter | 3.890 INCHES MINIMUM AND 3.900 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Hole Diameter | 3.478 INCHES MINIMUM AND 3.488 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 |
|---|---|
| 65126-11236-102 | Richard Manufacturing Co., Inc. Dba Richard Manufacturing Co Inc (USA) |
| 65126-11236-102 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65126-11236-102 | Rotair Aerospace Corp (USA) |
| 65126-11236-102 | Alpine Machine & Tool Corporation (USA) |
NSN 5310-01-124-1267 is a Washer,recessed, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-124-1267 has 4 manufacturer part numbers on file: 65126-11236-102 (Richard Manufacturing Co., Inc. Dba Richard Manufacturing Co Inc), 65126-11236-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65126-11236-102 (Rotair Aerospace Corp), 65126-11236-102 (Alpine Machine & Tool Corporation).
Key specifications for 65126-11236-102: Overall Height: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: QQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8,TEMPER T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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.