The Washer,concave, cataloged under National Stock Number 5310-00-055-2841, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Avionics Specialties, Inc.. Government technical data includes 7 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 | 5310-00-055-2841 |
| Primary Part Number | 927-150-42 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Avionics Specialties, Inc. |
| Status | ACTIVE |
| Radius | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Style Designator | CONCAVE |
| Material Document and Classification | AMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Material Thickness | 0.042 INCHES MINIMUM AND 0.048 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 360 OVERALL |
| Hole Diameter | 0.139 INCHES MINIMUM AND 0.144 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 |
|---|---|
| 927-150-42 PRIMARY | Avionics Specialties, Inc. (USA) |
NSN 5310-00-055-2841 is a Washer,concave, manufactured by Avionics Specialties, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-055-2841 has 1 manufacturer part number on file: 927-150-42 (Avionics Specialties, Inc.).
Key specifications for 927-150-42: Radius: 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Style Designator: CONCAVE; Material Document and Classification: AMS 4610 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN. 7 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.