The Washer,shouldered, cataloged under National Stock Number 5310-01-252-3106, 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 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-252-3106 |
| Primary Part Number | 70219-42422-137 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Shoulder Height | 0.018 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Hole Diameter | 1.870 INCHES MINIMUM AND 1.878 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 |
|---|---|
| 70219-42422-137 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1993629 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| MIL-STD-130 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-252-3106 is a Washer,shouldered, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-252-3106 has 1 manufacturer part number on file: 70219-42422-137 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 70219-42422-137: Shoulder Height: 0.018 INCHES NOMINAL IN; Style Designator: SHOULDERED; Outside Diameter: 1.750 INCHES NOMINAL IN; Material Thickness: 0.040 INCHES NOMINAL IN. 5 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.