The Washer,lock, cataloged under National Stock Number 5310-01-497-3570, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is C E Niehoff & 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-497-3570 |
| Primary Part Number | N9252 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | C E Niehoff & Co |
| Status | ACTIVE |
| FSC Application Data | NHA ALTERNATOR |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 18.0 MILLIMETERS MAXIMUM MM |
| Material Thickness | 2.5 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| Hole Diameter | 10.2 MILLIMETERS NOMINAL 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 |
|---|---|
| 7KP334 | Oshkosh Defense Llc (USA) |
| 6010000471 | Texelis (FRA) |
| N9252 PRIMARY | C E Niehoff & Co (USA) |
| Reference | Meaning |
|---|---|
| 7KP334 | 5/9 Secondary reference Oshkosh Corp |
| 4631904 | D/9 Drawing number reference only Oshkosh Defense Llc |
NSN 5310-01-497-3570 is a Washer,lock, manufactured by C E Niehoff & Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-497-3570 has 3 manufacturer part numbers on file: 7KP334 (Oshkosh Defense Llc), 6010000471 (Texelis), N9252 (C E Niehoff & Co).
3 possible matches (shared part number, not a government interchangeability claim): 6105-01-566-9343, 6115-01-691-7280, 6150-01-697-1566. Verify interchangeability with system specifications before substitution.
Key specifications for N9252: FSC Application Data: NHA ALTERNATOR; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 18.0 MILLIMETERS MAXIMUM MM; Material Thickness: 2.5 MILLIMETERS NOMINAL MM. 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.