The Washer,lock, cataloged under National Stock Number 5310-01-439-0080, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-439-0080 |
| Primary Part Number | 160571 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am |
| Status | ACTIVE |
| Supplementary Features | FOR SCREW SIZE: M16; HARDNESS: NOT RATED |
| Major Thickness | 4.00 MILLIMETERS NOMINAL MM |
| Closed Outside Diameter | 39.00 MILLIMETERS NOMINAL MM |
| Material | STEEL CORROSION RESISTING OVERALL |
| Closed Inside Diameter | 17.00 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 91477A125 | Mcmaster-Carr Supply Company (USA) |
| 160571 PRIMARY | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| 1P703863 | Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA) |
| Reference | Meaning |
|---|---|
| 321113F91 PC 13 | 5/9 Secondary reference Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am |
NSN 5310-01-439-0080 is a Washer,lock, manufactured by Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-439-0080 has 3 manufacturer part numbers on file: 91477A125 (Mcmaster-Carr Supply Company), 160571 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am), 1P703863 (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am).
1 possible match (shared part number, not a government interchangeability claim): 5325-01-723-7207. Verify interchangeability with system specifications before substitution.
Key specifications for 160571: Overall Height: 5.30 MILLIMETERS NOMINAL MM; Supplementary Features: FOR SCREW SIZE: M16; HARDNESS: NOT RATED; Major Thickness: 4.00 MILLIMETERS NOMINAL MM; Closed Outside Diameter: 39.00 MILLIMETERS NOMINAL MM. 5 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.