The Nut,tube Coupling, cataloged under National Stock Number 4730-00-075-2772, 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 K & K Grinding & Machine Co.. Government technical data includes 6 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 | 4730-00-075-2772 |
| Primary Part Number | 475599 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | K & K Grinding & Machine Co. |
| Status | ACTIVE |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.125 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-00-075-2772 is a Nut,tube Coupling, manufactured by K & K Grinding & Machine Co., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-075-2772 has 2 manufacturer part numbers on file: 475599 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 475599 (K & K Grinding & Machine Co.).
1 possible match (shared part number, not a government interchangeability claim): 4210-01-620-1248. Verify interchangeability with system specifications before substitution.
Key specifications for 475599: Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 2.125 INCHES IN; Thread Class: 3B. 6 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.
NSN 4730-00-075-2772 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.