The Washer,concave, cataloged under National Stock Number 5310-01-052-0039, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Integrated Defense Solutions Inc.. Government technical data includes 11 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 | 5310-01-052-0039 |
| Primary Part Number | 229-004321 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bae Systems Integrated Defense Solutions Inc. |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES TOP |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 2.710 INCHES MINIMUM AND 2.720 INCHES MAXIMUM IN |
| Style Designator | CONCAVE |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.710 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Recess Depth | 0.040 INCHES NOMINAL IN |
| Material Thickness | 0.120 INCHES NOMINAL IN |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.262 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 |
|---|---|
| 229-004321 PRIMARY | Bae Systems Integrated Defense Solutions Inc. (USA) |
NSN 5310-01-052-0039 is a Washer,concave, manufactured by Bae Systems Integrated Defense Solutions Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-052-0039 has 1 manufacturer part number on file: 229-004321 (Bae Systems Integrated Defense Solutions Inc.).
Key specifications for 229-004321: Surface Finish: 32.0 MICROINCHES TOP; Surface Treatment Document and Classification: MIL-C-13924,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 2.710 INCHES MINIMUM AND 2.720 INCHES MAXIMUM IN; Style Designator: CONCAVE. 11 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.