The Adapter,straight,tube to Hose, cataloged under National Stock Number 4730-01-557-7631, 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 Parker-Hannifin Corp Div Parflex Division. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-557-7631 |
| Primary Part Number | 20690-16-16 |
| Item Name | Adapter,straight,tube to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corp Div Parflex Division |
| Status | ACTIVE |
| Flange Face Design | PLAIN ALL ENDS |
| Connection Style | SWIVEL NUT W/ COMPRESSION SLEEVE (TUBE) ALL ENDS |
| Nominal Overall Length | 2.520 INCHES IN |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES ALL ENDS IN |
| Nominal Thread Size | 1.312 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | COPPER ALLOY NIPPLE |
| Material | STEEL SOCKET |
| Thread Series Designator | NPTF 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 |
|---|---|
| 20690-16-16 PRIMARY | Parker-Hannifin Corp Div Parflex Division (USA) |
NSN 4730-01-557-7631 is a Adapter,straight,tube to Hose, manufactured by Parker-Hannifin Corp Div Parflex Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-557-7631 has 1 manufacturer part number on file: 20690-16-16 (Parker-Hannifin Corp Div Parflex Division).
Key specifications for 20690-16-16: Flange Face Design: PLAIN ALL ENDS; Connection Style: SWIVEL NUT W/ COMPRESSION SLEEVE (TUBE) ALL ENDS; Nominal Overall Length: 2.520 INCHES IN; Connection Type: THREADED INTERNAL TUBE ALL ENDS. 11 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.