The Washer,shouldered, cataloged under National Stock Number 5310-00-236-0565, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Contraves Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-236-0565 |
| Primary Part Number | S4143-2 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Contraves Inc |
| Status | ACTIVE |
| Shoulder Height | 0.054 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED |
| Material Document and Classification | MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Hole Diameter | 0.189 INCHES MINIMUM AND 0.195 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 |
|---|---|
| S4143-2 PRIMARY | Contraves Inc (USA) |
| Reference | Meaning |
|---|---|
| 140A362H10 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 5310-00-236-0565 is a Washer,shouldered, manufactured by Contraves Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-236-0565 has 1 manufacturer part number on file: S4143-2 (Contraves Inc).
Key specifications for S4143-2: Shoulder Height: 0.054 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Style Designator: SHOULDERED; Material Document and Classification: MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN. 8 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.