The Washer,concave, cataloged under National Stock Number 5310-01-201-9035, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is V & M Group, Inc. Dba V M. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-201-9035 |
| Primary Part Number | 3530558 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | V & M Group, Inc. Dba V M |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES TOP |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Radius | 0.848 INCHES MINIMUM AND 0.852 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.250 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 630 OVERALL |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.120 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 |
|---|---|
| 3530558 PRIMARY | V & M Group, Inc. Dba V M (USA) |
| Reference | Meaning |
|---|---|
| 3530558 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-201-9035 is a Washer,concave, manufactured by V & M Group, Inc. Dba V M, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-201-9035 has 1 manufacturer part number on file: 3530558 (V & M Group, Inc. Dba V M).
Key specifications for 3530558: Surface Finish: 32.0 MICROINCHES TOP; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Radius: 0.848 INCHES MINIMUM AND 0.852 INCHES MAXIMUM IN; Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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.