The Washer,recessed, cataloged under National Stock Number 5310-00-014-5771, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Heligear Acquisition Co. Dba Northstar Aerospace, 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-014-5771 |
| Primary Part Number | 641019-1 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Outside Diameter | 1.449 INCHES MINIMUM AND 1.454 INCHES MAXIMUM IN |
| Recess Depth | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Material Thickness | 0.039 INCHES NOMINAL IN |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 1.020 INCHES NOMINAL 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 |
|---|---|
| 641019-1 PRIMARY | Heligear Acquisition Co. Dba Northstar Aerospace, Inc. (USA) |
NSN 5310-00-014-5771 is a Washer,recessed, manufactured by Heligear Acquisition Co. Dba Northstar Aerospace, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-014-5771 has 1 manufacturer part number on file: 641019-1 (Heligear Acquisition Co. Dba Northstar Aerospace, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-034-0174. Verify interchangeability with system specifications before substitution.
Key specifications for 641019-1: Overall Height: 0.077 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN; Style Designator: RECESSED; Outside Diameter: 1.449 INCHES MINIMUM AND 1.454 INCHES MAXIMUM IN; Recess Depth: 0.030 INCHES MINIMUM AND 0.040 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.