The Washer,lock, cataloged under National Stock Number 5310-01-588-1252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-588-1252 |
| Primary Part Number | 1133891 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Color | YELLOW OVERALL |
| 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 |
|---|---|
| 1133891 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
| 12759-01005 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
NSN 5310-01-588-1252 is a Washer,lock, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-588-1252 has 2 manufacturer part numbers on file: 1133891 (Fastenal Company Dba Fastenal Co), 12759-01005 (Fastenal Company Dba Fastenal Co).
Key specifications for 1133891: Style Designator: SPLIT HELICAL-RIGHT HAND; Color: YELLOW OVERALL; Special Features: INNER DIAMETER 0.260 IN, MATERIAL HIGH ALLOY, OUTER DIAMETER 0.487 IN, STYLE - MEDIUM SPLIT, TYPE LOCK WASHER, NOMINAL SIZE .250 IN, NOMINAL THICKNESS 0.062 IN IN; Surface Treatment: ZINC OVERALL. 3 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.