The Adapter Bushing, cataloged under National Stock Number 4730-00-738-4599, 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 Kelly Manufacturing Company. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-738-4599 |
| Primary Part Number | A1912 |
| Item Name | Adapter Bushing |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Kelly Manufacturing Company |
| Status | ACTIVE |
| Width Across Flats | 0.168 INCHES NOMINAL IN |
| Female End Characteristic | COUNTERSUNK |
| Counterbore/countersink Location | AT WRENCHING HEAD END |
| Male End Thread Size | 0.125-40 |
| Female End Thread Length | 0.290 INCHES NOMINAL IN |
| Female End Thread Class | 3B |
| Diameter | 0.090 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Male End Thread Direction | RIGHT-HAND |
| Female End Thread Size | 0.060-80 |
| Wrenching Facility Shape | FLATTED |
| Male End Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | OXIDE |
| Chamfer Angle in Deg | 45.0 LOCATION NOT OTHERWISE SPECIFIED |
| Depth | 0.015 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Female End Screw Thread Series Designator | UNF |
| Male End Thread Class | 3A A |
| Female End Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 1008 |
| Male End Thread Length | 0.250 INCHES NOMINAL IN |
| Thickness | 0.040 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 |
|---|---|
| A1912 PRIMARY | Kelly Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| A1912 | 5/9 Secondary reference Allen R C Instruments Inc |
| A1912 | 5/9 Secondary reference Allen R C Co Inc Cash Register Div |
NSN 4730-00-738-4599 is a Adapter Bushing, manufactured by Kelly Manufacturing Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-738-4599 has 1 manufacturer part number on file: A1912 (Kelly Manufacturing Company).
7 possible matches (shared part number, not a government interchangeability claim): 4730-01-214-7515, 4320-01-252-7440, 8455-01-550-7195. Verify interchangeability with system specifications before substitution.
Key specifications for A1912: Width Across Flats: 0.168 INCHES NOMINAL IN; Female End Characteristic: COUNTERSUNK; Counterbore/countersink Location: AT WRENCHING HEAD END; Male End Thread Size: 0.125-40. 20 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.