The Washer,split, cataloged under National Stock Number 5310-01-395-0830, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-395-0830 |
| Primary Part Number | 5HS643 |
| Item Name | Washer,split |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Distance Across Split Opening | 0.185 INCHES NOMINAL IN |
| Hardness Rating | 45.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM |
| Style Designator | SPLIT |
| Outside Diameter | 0.489 INCHES MINIMUM IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.254 INCHES MINIMUM 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 |
|---|---|
| 5HS643 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 5HS643 | 5/9 Secondary reference Oshkosh Corp |
| 7-950-140350 | 5/9 Secondary reference Minnpar, Llc Dba Minnpar |
| 7-950-140350 | 3/9 Design control — primary reference Grove U.s. Llc Dba Grove Us Llc |
NSN 5310-01-395-0830 is a Washer,split, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-395-0830 has 1 manufacturer part number on file: 5HS643 (Oshkosh Defense Llc).
Key specifications for 5HS643: Distance Across Split Opening: 0.185 INCHES NOMINAL IN; Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT; Outside Diameter: 0.489 INCHES MINIMUM IN. 8 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.