The Washer,lock, cataloged under National Stock Number 5310-01-625-1375, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Flinthills Trading Company, Llc Dba Gl Huyett. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-625-1375 |
| Primary Part Number | 91101A231 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Flinthills Trading Company, Llc Dba Gl Huyett |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.680 INCHES NOMINAL IN |
| Material Thickness | 0.090 INCHES MINIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.380 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 |
|---|---|
| 91101A231 | Fastenal Company Dba Fastenal Co (USA) |
| 91101A231 | Mcmaster-Carr Supply Company (USA) |
| 91101A231 PRIMARY | Flinthills Trading Company, Llc Dba Gl Huyett (USA) |
| 91101A231 | Mcmaster-Carr Supply Co (USA) |
| 91101A231 PRIMARY | Hodell-Natco Industries, Inc Dba Southwest Fasteners (USA) |
NSN 5310-01-625-1375 is a Washer,lock, manufactured by Flinthills Trading Company, Llc Dba Gl Huyett, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-625-1375 has 5 manufacturer part numbers on file: 91101A231 (Fastenal Company Dba Fastenal Co), 91101A231 (Mcmaster-Carr Supply Company), 91101A231 (Flinthills Trading Company, Llc Dba Gl Huyett), 91101A231 (Mcmaster-Carr Supply Co), 91101A231 (Hodell-Natco Industries, Inc Dba Southwest Fasteners).
Key specifications for 91101A231: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.680 INCHES NOMINAL IN; Material Thickness: 0.090 INCHES MINIMUM IN; Material: STEEL OVERALL. 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.