The Nut,self-Locking,castellated,hex, cataloged under National Stock Number 5310-01-466-7986, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oberdorfer Pumps Inc. 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 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 | 5310-01-466-7986 |
| Primary Part Number | A1642 |
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oberdorfer Pumps Inc |
| Status | ACTIVE |
| Thread Series | UNEF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.020 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 1"-20 |
| 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 |
|---|---|
| 0961-043-0030-P184-21 | Oberdorfer Pumps Inc (USA) |
| A1642 PRIMARY | Oberdorfer Pumps Inc (USA) |
NSN 5310-01-466-7986 is a Nut,self-Locking,castellated,hex, manufactured by Oberdorfer Pumps Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-466-7986 has 2 manufacturer part numbers on file: 0961-043-0030-P184-21 (Oberdorfer Pumps Inc), A1642 (Oberdorfer Pumps Inc).
1 possible match (shared part number, not a government interchangeability claim): 8455-01-665-8828. Verify interchangeability with system specifications before substitution.
Key specifications for A1642: Thread Series: UNEF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.020 INCHES IN; Thread Class: 2B. 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.