The Tee,pipe to Tube, cataloged under National Stock Number 4730-01-311-8357, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 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 | 4730-01-311-8357 |
| Primary Part Number | MIL-DTL-18866 |
| Item Name | Tee,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 Class | 2A FIRST END A |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Leg Length | 0.891 INCHES NOMINAL FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Connection Type | THREADED EXTERNAL PIPE THIRD END |
| Leg Length | 0.891 INCHES NOMINAL SECOND END IN |
| Connection Style | FLARELESS (TUBE) SECOND END |
| Connection Style | PLAIN (PIPE) THIRD END |
| Leg Length | 0.781 INCHES NOMINAL THIRD END IN |
| Nondefinitive Spec/std Data | 22D FIGURE |
| Furnished Items and Quantity | 2 TUBE COUPLING NUT W/SLEEVE |
| Specification/standard Data | 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 96906-MS51818 GOVERNMENT STANDARD |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Nominal Thread Size | 0.125 INCHES THIRD END IN |
| Thread Class | 2A SECOND END A |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END |
| Thread Series Designator | NPTF THIRD END |
| Seat Angle | 37.0 DEGREES SECOND END |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) 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 |
| MS51818-3S | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 4SBUSS | Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA) |
| 4SBUSS | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| MIL-DTL-18866J | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MS51818-3SS | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-F-18866 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4730-01-311-8357 is a Tee,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 4730-01-311-8357 has 7 cross-referenced part numbers: MIL-DTL-18866 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51818-3S (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 4SBUSS (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 4SBUSS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), MIL-DTL-18866J (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.
There are 4 known substitutes for 4730-01-311-8357: 4730-00-019-1489, 4730-01-031-0263, 4730-01-036-5064 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for MIL-DTL-18866: Thread Class: 2A FIRST END A; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES SECOND END IN; Connection Type: THREADED EXTERNAL TUBE FIRST END; Nominal Thread Size: 0.438 INCHES SECOND END IN. 26 total characteristics are documented in the Federal Logistics Information System.