The Washer,lock, cataloged under National Stock Number 5310-01-099-4980, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dana Off Highway Products, Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-099-4980 |
| Primary Part Number | 235591 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dana Off Highway Products, Llc |
| Status | ACTIVE |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Material Thickness | 0.224 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.120 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 |
|---|---|
| 9-904-103525 | Grove U.s. Llc Dba Grove Us Llc (USA) |
| 235591 PRIMARY | Dana Off Highway Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 235591 | 5/9 Secondary reference Clark Equipment Co |
NSN 5310-01-099-4980 is a Washer,lock, manufactured by Dana Off Highway Products, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-099-4980 has 2 manufacturer part numbers on file: 9-904-103525 (Grove U.s. Llc Dba Grove Us Llc), 235591 (Dana Off Highway Products, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-433-1015. Verify interchangeability with system specifications before substitution.
Key specifications for 235591: Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 2.250 INCHES NOMINAL IN; Material Thickness: 0.224 INCHES NOMINAL 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.