The Washer,shouldered, cataloged under National Stock Number 5310-01-281-3405, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-281-3405 |
| Primary Part Number | 70209-04301-107 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Shoulder Height | 0.050 INCHES NOMINAL IN |
| Hardness Rating | 277.0 BRINELL MINIMUM AND 352.0 BRINELL MAXIMUM |
| Style Designator | SHOULDERED |
| Material Document and Classification | AMS 5643,COND H1150 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5622,COND H1150 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.940 INCHES NOMINAL IN |
| Material Thickness | 0.060 INCHES NOMINAL IN |
| Shoulder Diameter | 0.8015 INCHES MINIMUM AND 0.8080 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 OVERALL |
| Hole Diameter | 0.5645 INCHES MINIMUM AND 0.5660 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 |
|---|---|
| 70209-04301-107 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-01-281-3405 is a Washer,shouldered, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-281-3405 has 1 manufacturer part number on file: 70209-04301-107 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70209-04301-107: Shoulder Height: 0.050 INCHES NOMINAL IN; Hardness Rating: 277.0 BRINELL MINIMUM AND 352.0 BRINELL MAXIMUM; Style Designator: SHOULDERED; Material Document and Classification: AMS 5643,COND H1150 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5622,COND H1150 ASSN STD 2ND 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.