The Thread Piece,union, cataloged under National Stock Number 4730-00-919-3101, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 10 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. 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 | 4730-00-919-3101 |
| Primary Part Number | RB86 |
| Item Name | Thread Piece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Wisconsin Motors, Llc |
| Status | ACTIVE |
| Union End Thread Direction | RIGHT-HAND |
| End Connection Type | THREADED |
| Union End Thread Size | 0.500-14 |
| Seat Type | STRAIGHT FACE |
| Thread Direction | RIGHT-HAND |
| Thread Size | 1.500-8 |
| Screw Thread Series Designator | UN |
| Union End Screw Thread Series Designator | NPT |
| Screw Thread Location | EXTERNAL |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| RB86 PRIMARY | Wisconsin Motors, Llc (USA) |
NSN 4730-00-919-3101 is a Thread Piece,union, manufactured by Wisconsin Motors, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-919-3101 has 1 manufacturer part number on file: RB86 (Wisconsin Motors, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-419-3451. Verify interchangeability with system specifications before substitution.
Key specifications for RB86: Union End Thread Direction: RIGHT-HAND; End Connection Type: THREADED; Union End Thread Size: 0.500-14; Overall Length: 1.500 INCHES NOMINAL IN. 10 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.