The Washer,lock, cataloged under National Stock Number 5310-01-587-5072, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-587-5072 |
| Primary Part Number | 493-129 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Surface Treatment | ZINC OVERALL |
| 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 |
|---|---|
| 493-129 PRIMARY | Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering (USA) |
| Reference | Meaning |
|---|---|
| 493-129 | 3/9 Design control — primary reference Risk Industries Llc Dba Pines Technology Div Headquarters |
NSN 5310-01-587-5072 is a Washer,lock, manufactured by Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-587-5072 has 1 manufacturer part number on file: 493-129 (Ajax Tocco Magnethermic Corporation Dba Pines Engineering Div Pines Engineering).
Key specifications for 493-129: Style Designator: SPLIT HELICAL-RIGHT HAND; Special Features: GRADE 5 LOCK WASHER NUMBER 10; Surface Treatment: ZINC OVERALL; Part Name Assigned by Controlling Agency: REGULAR STANDARD LOCK WASHERS MECHANICAL. 2 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.