The Adapter Bushing, cataloged under National Stock Number 4730-00-350-6991, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is American Standard Inc Westinghouse Air Brake Co Div. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-350-6991 |
| Primary Part Number | SD5439 |
| Item Name | Adapter Bushing |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | American Standard Inc Westinghouse Air Brake Co Div |
| Status | ACTIVE |
| Material | STEEL |
| Surface Treatment | ZINC |
| Female End Thread Size | 1/4 IN.-18 IN |
| Male End Thread Size | 13/16 IN.20 IN |
| Male End Thread Class | 2A A |
| Male End Thread Length | 0.312 INCHES NOMINAL IN |
| Female End Thread Direction | RIGHT-HAND |
| Width Across Flats | 1.000 INCHES NOMINAL IN |
| Female End Thread Length | 0.375 INCHES NOMINAL IN |
| Thickness | 0.156 INCHES NOMINAL IN |
| Female End Screw Thread Series Designator | NPT |
| Wrenching Facility Shape | HEXAGON |
| Male End Thread Direction | RIGHT-HAND |
| Male End Screw Thread Series Designator | UNEF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SD5439 | American Standard Inc Westinghouse Air Brake Co Div (USA) |
| 5325122 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| AC544 | Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA) |
| AC544 | Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA) |
| AC544 | Tvh Parts Co. (USA) |
NSN 4730-00-350-6991 is a Adapter Bushing, manufactured by American Standard Inc Westinghouse Air Brake Co Div, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-350-6991 has 5 cross-referenced part numbers: SD5439 (American Standard Inc Westinghouse Air Brake Co Div), 5325122 (U S Army Tank Automotive Command Amsta-Im-Mm), AC544 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), AC544 (Federal Mogul Corp Sub Wagner Brake Moog Automotive Div), AC544 (Tvh Parts Co.).
There are 2 known substitutes for 4730-00-350-6991: 3110-00-142-4338, 1680-01-082-7724. Verify interchangeability with system specifications before substitution.
Key specifications for SD5439: Overall Length: 0.469 INCHES NOMINAL IN; Material: STEEL; Surface Treatment: ZINC; Female End Thread Size: 1/4 IN.-18 IN. 15 total characteristics are documented in the Federal Logistics Information System.