The Washer,lock, cataloged under National Stock Number 5310-01-662-9356, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-662-9356 |
| Primary Part Number | WE6400000A20000 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Style Designator | FLAT EXTERNAL TEETH |
| Outside Diameter | 17.57 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM |
| Material Thickness | 0.85 MILLIMETERS MINIMUM AND 0.95 MILLIMETERS MAXIMUM MM |
| External Key Quantity | 9 |
| Material | STEEL COMP A2 OVERALL |
| Hole Diameter | 10.50 MILLIMETERS MINIMUM AND 10.77 MILLIMETERS MAXIMUM 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 |
|---|---|
| WE6400000A20000 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
| 7951190580 | Grove U.s. Llc Dba Grove Us Llc (USA) |
| M10 DIN 6797 A2 | Din Deutsches Institut Fur Normung Ev (DEU) |
| Reference | Meaning |
|---|---|
| 6829104454 | D/9 Drawing number reference only Grove U.s. Llc Dba Grove Us Llc |
NSN 5310-01-662-9356 is a Washer,lock, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-662-9356 has 3 manufacturer part numbers on file: WE6400000A20000 (Fastenal Company Dba Fastenal Co), 7951190580 (Grove U.s. Llc Dba Grove Us Llc), M10 DIN 6797 A2 (Din Deutsches Institut Fur Normung Ev).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-687-8129, 5310-01-689-2386. Verify interchangeability with system specifications before substitution.
Key specifications for WE6400000A20000: Style Designator: FLAT EXTERNAL TEETH; Outside Diameter: 17.57 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM MM; Material Thickness: 0.85 MILLIMETERS MINIMUM AND 0.95 MILLIMETERS MAXIMUM MM; External Key Quantity: 9. 6 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.