The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-124-1270, 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 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-124-1270 |
| Primary Part Number | 65662-03813-101 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 64.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | SS8435,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Height | 0.115 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED BOTH SIDES |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.985 INCHES MINIMUM AND 0.990 INCHES MAXIMUM IN |
| Material Thickness | 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.615 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN |
| Recess Diameter | 0.218 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 630 OVERALL |
| Hole Diameter | 0.192 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Recess Angle | 85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 65662-03813-101 | Richard Manufacturing Co., Inc. Dba Richard Manufacturing Co Inc (USA) |
| 65662-03813-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65662-03813-101 | Rotair Aerospace Corp (USA) |
NSN 5310-01-124-1270 is a Washer,shouldered and Recessed, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-124-1270 has 3 manufacturer part numbers on file: 65662-03813-101 (Richard Manufacturing Co., Inc. Dba Richard Manufacturing Co Inc), 65662-03813-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65662-03813-101 (Rotair Aerospace Corp).
Key specifications for 65662-03813-101: Surface Finish: 64.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: SS8435,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.115 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Style Designator: SHOULDERED AND RECESSED BOTH SIDES. 13 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.