The Nut,tube Coupling, cataloged under National Stock Number 4730-01-099-9529, 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 General Electric Company. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-099-9529 |
| Primary Part Number | R197P05 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Length to Shoulder | 0.599 INCHES MINIMUM AND 0.619 INCHES MAXIMUM IN |
| Width Across Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Material Document and Classification | AMS5639 MFR REF ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.622 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN |
| Nut Style | TUBE COUPLING |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X OVERALL |
| Fabrication Method | MACHINED |
| Smallest Inside Diameter | 0.451 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN |
| Nominal Tube Outside Diameter | 0.312 INCHES 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 |
|---|---|
| R197P05 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| R197 | D/9 Drawing number reference only General Electric Company |
NSN 4730-01-099-9529 is a Nut,tube Coupling, manufactured by General Electric Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-099-9529 has 1 manufacturer part number on file: R197P05 (General Electric Company).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-129-5114, 4240-01-250-9062. Verify interchangeability with system specifications before substitution.
Key specifications for R197P05: Length to Shoulder: 0.599 INCHES MINIMUM AND 0.619 INCHES MAXIMUM IN; Width Across Flats: 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN; Thread Series: UNF; Material Document and Classification: AMS5639 MFR REF ALL MATERIAL RESPONSES OVERALL. 14 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.