The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-618-7501, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-618-7501 |
| Primary Part Number | ST57D65-3 |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Lockheed Martin Corp |
| Status | ACTIVE |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Overall Length | 1.250 INCHES IN |
| Furnished Items and Quantity | 1 FERRULE SLEEVE AND 1 SHORT COUPLING NUT |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY TUBE SIZE AND O/A LG |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Thread Class | 3A FIRST END A |
| Material | COPPER ALLOY OVERALL |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Connection Style | PLAIN (PIPE) SECOND END |
| Thread Series Designator | UNF FIRST END |
| Connection Style | FLARED (TUBE) FIRST END |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Series Designator | NPTF SECOND END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| ST57D65-3 | Lockheed Martin Corp (USA) |
| 68P-4-4 | Parker-Hannifin Corp Div Fluid System Connector Division (USA) |
| SM-A-949433-29 | Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA) |
| 268P | Imperial (USA) |
| 68P-4-4 | Lesman Instrument Co (USA) |
NSN 4730-00-618-7501 is a Adapter,straight,pipe to Tube, manufactured by Lockheed Martin Corp, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-618-7501 has 5 cross-referenced part numbers: ST57D65-3 (Lockheed Martin Corp), 68P-4-4 (Parker-Hannifin Corp Div Fluid System Connector Division), SM-A-949433-29 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 268P (Imperial), 68P-4-4 (Lesman Instrument Co).
There are 4 known substitutes for 4730-00-618-7501: 2805-00-318-8572, 4730-00-631-1267, 4730-00-882-6942 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for ST57D65-3: Connection Type: THREADED EXTERNAL PIPE SECOND END; Nominal Thread Size: 0.250 INCHES SECOND END IN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Nominal Overall Length: 1.250 INCHES IN. 16 total characteristics are documented in the Federal Logistics Information System.