The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-494-2257, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-494-2257 |
| Primary Part Number | MIL-DTL-18866 |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Thread Tolerance Class | 2A EXTERNAL FIRST END A |
| Flow Angle | 45.0 DEGREES |
| Surface Treatment | ZINC OVERALL |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Thread Series Designator | UNF FIRST END |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Connection Style | SWIVEL, PLAIN (PIPE) SECOND END |
| Connection Style | SWIVEL, PLAIN (TUBE) FIRST END |
| Furnished Items and Quantity | 1 NUT WITH SLEEVE |
| Material | STEEL OVERALL |
| Thread Series Designator | NPTF SECOND END |
| Thread Class | 2A FIRST END A |
| Leg Length | 0.950 INCHES MINIMUM AND 1.010 INCHES MAXIMUM SECOND END IN |
| Thread Quantity Per Inch | 16 FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MIL-DTL-18866 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MS51508 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS51508B8-4Z | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4730-01-494-2257 is a Elbow,pipe to Tube, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-01-494-2257 has 3 cross-referenced part numbers: MIL-DTL-18866 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51508 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS51508B8-4Z (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There are 2 known substitutes for 4730-01-494-2257: 4730-00-995-1568, 4730-01-494-2255. Verify interchangeability with system specifications before substitution.
Key specifications for MIL-DTL-18866: Part Name Assigned by Controlling Agency: ELBOW, PIPE TO TUBE; Thread Tolerance Class: 2A EXTERNAL FIRST END A; Flow Angle: 45.0 DEGREES; Surface Treatment: ZINC OVERALL. 18 total characteristics are documented in the Federal Logistics Information System.