PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A1631Elbow,pipe to Tube

Mueller Brass Co. · NSN 4730-00-053-0258 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-053-0258 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-053-0258. Primary manufacturer part number: A1631.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Thread Series Designator: NPT SECOND END
  • Nominal Thread Size: 1.500 INCHES SECOND END IN
  • Material: COPPER ALLOY OVERALL
  • Flow Angle: 90.0 DEGREES
  • Nominal Outside Diameter Tube Accommodated: 1.500 INCHES FIRST END IN
  • Connection Style: PLAIN (PIPE) SECOND END
  • Nominal Pipe Size Accommodated: 1.500 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-053-0258, 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 Mueller Brass Co.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-053-0258
Primary Part NumberA1631
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Thread Series DesignatorNPT SECOND END
Nominal Thread Size1.500 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Flow Angle90.0 DEGREES
Nominal Outside Diameter Tube Accommodated1.500 INCHES FIRST END IN
Connection StylePLAIN (PIPE) SECOND END
Nominal Pipe Size Accommodated1.500 INCHES SECOND END IN
Leg Length2.188 INCHES NOMINAL SECOND END IN
Leg Length1.688 INCHES NOMINAL FIRST END IN
Connection StyleSOCKET (TUBE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6830-00-049-5435M15 INTERCHANGEABLE
Compressed Air,breathing
Edgewood Chemical Biological Center Ecbc
5130-00-134-7579M1-5 INTERCHANGEABLE
Mandrel,fastener Installation to
Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc
5910-00-161-88815346776 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
U S Army Tank Automotive Command Amsta-Im-Mm
5120-00-240-141840981 INTERCHANGEABLE
Handle,socket Wrench
S K Hand Tool Corp
5940-00-259-4823135-4 INTERCHANGEABLE
Terminal,lug
Zierick Mfg Corp
5905-00-279-5720956003-9 INTERCHANGEABLE
Resistor,fixed,wire Wound
Raytheon Company Dba Raytheon
4330-00-310-04870111015 INTERCHANGEABLE
Pneumatic Muffler,exhaust-Intake
Allied Witan Co Dba Alwitco
5310-00-461-5499 INTERCHANGEABLE
Washer,nonmetallic
6685-00-472-5764M-15 INTERCHANGEABLE
Control,temperature,indicating
Dwyer Instruments Inc
5365-00-535-0608M15 INTERCHANGEABLE
Plug,machine Thread,magnetic
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
Cross-Reference Index
Part NumberManufacturer
001285 Uniflite Inc (USA)
M10 Uniflite Inc (USA)
A1631 PRIMARY Mueller Brass Co. (USA)
M15 Uniflite Inc (USA)
Related Parts
6830-00-049-5435INTERCHANGEABLE
COMPRESSED AIR,BREATHING
M15
5130-00-134-7579INTERCHANGEABLE
MANDREL,FASTENER INSTALLATION TO
M1-5
5910-00-161-8881INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
5346776
5120-00-240-1418INTERCHANGEABLE
HANDLE,SOCKET WRENCH
40981
5940-00-259-4823INTERCHANGEABLE
TERMINAL,LUG
135-4
5905-00-279-5720INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
956003-9
4330-00-310-0487INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE
0111015
5310-00-461-5499INTERCHANGEABLE
WASHER,NONMETALLIC
6685-00-472-5764INTERCHANGEABLE
CONTROL,TEMPERATURE,INDICATING
M-15
5365-00-535-0608INTERCHANGEABLE
PLUG,MACHINE THREAD,MAGNETIC
M15
2610-00-591-2865INTERCHANGEABLE
INNER TUBE,PNEUMATIC TIRE,VEHICU
1377-00-607-0314INTERCHANGEABLE
THRUSTER,CARTRIDGE ACTUATED

Frequently Asked Questions

What is NSN 4730-00-053-0258?

NSN 4730-00-053-0258 is a Elbow,pipe to Tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-053-0258?

NSN 4730-00-053-0258 has 4 cross-referenced part numbers: 001285 (Uniflite Inc), M10 (Uniflite Inc), A1631 (Mueller Brass Co.), M15 (Uniflite Inc).

What NSN replaces 4730-00-053-0258?

There are 12 known substitutes for 4730-00-053-0258: 6830-00-049-5435, 5130-00-134-7579, 5910-00-161-8881 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A1631?

Key specifications for A1631: Thread Series Designator: NPT SECOND END; Nominal Thread Size: 1.500 INCHES SECOND END IN; Material: COPPER ALLOY OVERALL; Flow Angle: 90.0 DEGREES. 10 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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