The Adapter Bushing, cataloged under National Stock Number 4730-00-031-6412, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-031-6412 |
| Primary Part Number | 231783 |
| Item Name | Adapter Bushing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Width Across Flats | 0.872 INCHES NOMINAL IN |
| Male End Thread Size | 5/8 IN.-18 IN |
| Female End Thread Length | 0.580 INCHES NOMINAL IN |
| Female End Thread Class | 3B |
| Male End Thread Direction | RIGHT-HAND |
| Female End Thread Size | 7/16 IN.-20 IN |
| Wrenching Facility Shape | HEXAGON |
| Male End Screw Thread Series Designator | UNF |
| Surface Treatment | PASSIVATE |
| Female End Screw Thread Series Designator | UNF |
| Male End Thread Class | 3A A |
| Female End Thread Direction | RIGHT-HAND |
| Material | STEEL CORROSION RESISTING |
| Male End Thread Length | 0.385 INCHES NOMINAL IN |
| Thickness | 0.135 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 |
|---|---|
| 231783 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 231783 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 231783 | 5/9 Secondary reference Desco Engineering Corp |
| 231783 | 5/9 Secondary reference Mayvill Gear Mfg Co |
NSN 4730-00-031-6412 is a Adapter Bushing, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-031-6412 has 1 manufacturer part number on file: 231783 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 231783: Width Across Flats: 0.872 INCHES NOMINAL IN; Male End Thread Size: 5/8 IN.-18 IN; Female End Thread Length: 0.580 INCHES NOMINAL IN; Female End Thread Class: 3B. 15 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.