The Nipple,tube, cataloged under National Stock Number 4730-00-157-8520, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-157-8520 |
| Primary Part Number | TP17597 |
| Item Name | Nipple,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) ALL ENDS |
| Nominal Overall Length | 2.250 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | LONG W/ OFFSET WRENCHING FACILITY |
| Material Document and Classification | QQ-B-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Thread Class | 3A ALL ENDS A |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| 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 |
|---|---|
| TP17597 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| SP17597 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| BUWEPSDWGSP17597 PRIMARY | Naval Reserve Center (USA) |
NSN 4730-00-157-8520 is a Nipple,tube, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-157-8520 has 3 manufacturer part numbers on file: TP17597 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), SP17597 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), BUWEPSDWGSP17597 (Naval Reserve Center).
Key specifications for TP17597: Connection Style: PLAIN (TUBE) ALL ENDS; Nominal Overall Length: 2.250 INCHES IN; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Style Designator: LONG W/ OFFSET WRENCHING FACILITY. 10 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.