PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-37-12Tee,pipe to Tube

Alcoa Composites Inc Fibertek Div · NSN 4730-01-064-3448 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-064-3448 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-064-3448. Primary manufacturer part number: 4-37-12.
Features
  • Tee,pipe to Tube — FSC 4730
  • Thread Series Designator: UNF FIRST END
  • Thread Class: 2A THIRD END A
  • Leg Length: 0.780 INCHES NOMINAL SECOND END IN
  • Thread Class: 2A FIRST END A
  • Connection Type: THREADED EXTERNAL TUBE THIRD END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Leg Length: 0.890 INCHES NOMINAL FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 12l14 or Steel Comp 1010 Overall construction
General Description

The Tee,pipe to Tube, cataloged under National Stock Number 4730-01-064-3448, 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 Alcoa Composites Inc Fibertek Div. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-064-3448
Primary Part Number4-37-12
Item NameTee,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAlcoa Composites Inc Fibertek Div
StatusACTIVE
Thread Series DesignatorUNF FIRST END
Thread Class2A THIRD END A
Leg Length0.780 INCHES NOMINAL SECOND END IN
Thread Class2A FIRST END A
Connection TypeTHREADED EXTERNAL TUBE THIRD END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Leg Length0.890 INCHES NOMINAL FIRST END IN
Nominal Thread Size0.438 INCHES THIRD END IN
Nominal Thread Size0.125 INCHES SECOND END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Connection StyleFLARED (TUBE) FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Series DesignatorNPTF SECOND END
Leg Length0.890 INCHES NOMINAL THIRD END IN
Seat Angle37.0 DEGREES FIRST END
Connection StylePLAIN (PIPE) SECOND END
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Nominal Thread Size0.438 INCHES FIRST END IN
Surface Treatment Document and ClassificationJ514 ASSN STD SINGLE TREATMENT RESPONSE AND QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Specification/standard Data96906-MS51511 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Nondefinitive Spec/std Data5C FIGURE
Furnished Items and Quantity2 TUBE COUPLING NUT W/SLEEVE
Thread Series DesignatorUNF THIRD END
Connection StyleFLARED (TUBE) THIRD END
MaterialSTEEL COMP 12L14 OR STEEL COMP 1010 OVERALL
Seat Angle37.0 DEGREES THIRD END
Nominal Outside Diameter Tube Accommodated0.250 INCHES THIRD END IN
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4130-00-106-214113216E0019 INTERCHANGEABLE
Filter Element,air Conditioning
Cecom Lr Center
5950-00-118-8154674-0117-010 INTERCHANGEABLE
Transformer,power
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4730-00-218-0147 INTERCHANGEABLE
Tee,pipe to Tube
6740-00-443-313543-712 INTERCHANGEABLE
Bumper,weight
Pakon Inc Dba Impak Division
6930-00-512-2147919-012020 INTERCHANGEABLE
Indicator,sensitive
Elbitamerica, Inc.
1650-00-672-797320284-2 INTERCHANGEABLE
Bracket,electric Connector
Triumph Thermal Systems - Maryland, Inc.
4820-01-031-73462615208-3 INTERCHANGEABLE
Valve,gate
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2530-01-098-12424-3712 INTERCHANGEABLE
Wheel Tire Assembly
Pdi Ground Support Systems, Inc.
5331-01-205-3291202-842 INTERCHANGEABLE
O-Ring
Bird-Johnson Propeller Company, Llc
3040-01-379-2742202842 INTERCHANGEABLE
Shaft,shouldered
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
Cross-Reference Index
Part NumberManufacturer
4-37-12 Alcoa Composites Inc Fibertek Div (USA)
J514 Society of Automotive Engineers Inc (USA)
4-RBTX-S Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
MIL-DTL-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
60244-90156 Textron Systems Corporation Dba Textron Systems Corp (USA)
4-RBTX-S Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
2028-4-2 Danfoss Power Solutions II, Llc (USA)
J514 Sae International Dba Sae International (USA)
MS51511B4 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
8611943-1 Warner Robins Air Logistics Center (USA)
3C5755X4 Dana Corp Weatherhead Div (USA)
851-FS 1/4X1/8 Imperial (USA)
MS51511A4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4-2 070424CA Sae International Dba Sae International (USA)
4-2 070424CA Society of Automotive Engineers Inc (USA)
Related Parts
4130-00-106-2141INTERCHANGEABLE
FILTER ELEMENT,AIR CONDITIONING
13216E0019
5950-00-118-8154INTERCHANGEABLE
TRANSFORMER,POWER
674-0117-010
4730-00-218-0147INTERCHANGEABLE
TEE,PIPE TO TUBE
6740-00-443-3135INTERCHANGEABLE
BUMPER,WEIGHT
43-712
6930-00-512-2147INTERCHANGEABLE
INDICATOR,SENSITIVE
919-012020
1650-00-672-7973INTERCHANGEABLE
BRACKET,ELECTRIC CONNECTOR
20284-2
4820-01-031-7346INTERCHANGEABLE
VALVE,GATE
2615208-3
2530-01-098-1242INTERCHANGEABLE
WHEEL TIRE ASSEMBLY
4-3712
5331-01-205-3291INTERCHANGEABLE
O-RING
202-842
3040-01-379-2742INTERCHANGEABLE
SHAFT,SHOULDERED
202842
5120-01-430-2931INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 4730-01-064-3448?

NSN 4730-01-064-3448 is a Tee,pipe to Tube, manufactured by Alcoa Composites Inc Fibertek Div, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-064-3448?

NSN 4730-01-064-3448 has 16 cross-referenced part numbers: 4-37-12 (Alcoa Composites Inc Fibertek Div), J514 (Society of Automotive Engineers Inc), 4-RBTX-S (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), MIL-DTL-18866 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 60244-90156 (Textron Systems Corporation Dba Textron Systems Corp) and 11 more.

What NSN replaces 4730-01-064-3448?

There are 11 known substitutes for 4730-01-064-3448: 4130-00-106-2141, 5950-00-118-8154, 4730-00-218-0147 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-37-12?

Key specifications for 4-37-12: Thread Series Designator: UNF FIRST END; Thread Class: 2A THIRD END A; Leg Length: 0.780 INCHES NOMINAL SECOND END IN; Thread Class: 2A FIRST END A. 28 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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