The Elbow,tube, cataloged under National Stock Number 4730-00-756-1031, 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 Globe Aerospace Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-756-1031 |
| Primary Part Number | MS21904-4 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Globe Aerospace Inc |
| Status | ACTIVE |
| Surface Treatment | CADMIUM OVERALL |
| Media for Which Designed | AIR SECOND RESPONSE |
| Leg Length | 0.875 INCHES MINIMUM AND 0.922 INCHES MAXIMUM SECOND END IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Leg Length | 0.875 INCHES MINIMUM AND 0.906 INCHES MAXIMUM FIRST END IN |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flow Angle | 90.0 DEGREES |
| Material Document and Classification | 66,CARBON STEEL,0.20 PERCENT MAX FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Maximum Operating Temp | 250.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Specification/standard Data | 96906-MS21904 GOVERNMENT STANDARD |
| Thread Class | 3A ALL ENDS A |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Material | STEEL COMP 12L14 OR STEEL COMP 1010 OVERALL |
| Maximum Operating Temp | -65.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Media for Which Designed | HYDRAULIC FLUID FIRST RESPONSE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-756-1031 is a Elbow,tube, manufactured by Globe Aerospace Inc, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-756-1031 has 2 cross-referenced part numbers: MS21904-4 (Globe Aerospace Inc), MS21904-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There is 1 known substitute for 4730-00-756-1031: 4730-00-194-1065. Verify interchangeability with system specifications before substitution.
Key specifications for MS21904-4: Surface Treatment: CADMIUM OVERALL; Media for Which Designed: AIR SECOND RESPONSE; Leg Length: 0.875 INCHES MINIMUM AND 0.922 INCHES MAXIMUM SECOND END IN; Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS. 20 total characteristics are documented in the Federal Logistics Information System.