PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-5041Reducer,tube

Mueller Brass Co. · NSN 4730-00-769-3964 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-769-3964 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-769-3964. Primary manufacturer part number: A-5041.
Features
  • Reducer,tube — FSC 4730
  • Connection Style: FLARED (TUBE) FIRST END
  • Seat Angle: 45.0 DEGREES ALL ENDS
  • Connection Type: THREADED INTERNAL TUBE FIRST END
  • Nominal Thread Size: 0.438 INCHES FIRST END IN
  • Connection Style: FLARED (TUBE) SECOND END
  • Nominal Overall Length: 1.125 INCHES IN
  • Nominal Thread Size: 0.625 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-769-3964, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-769-3964
Primary Part NumberA-5041
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusCANCELLED
Connection StyleFLARED (TUBE) FIRST END
Seat Angle45.0 DEGREES ALL ENDS
Connection TypeTHREADED INTERNAL TUBE FIRST END
Nominal Thread Size0.438 INCHES FIRST END IN
Connection StyleFLARED (TUBE) SECOND END
Nominal Overall Length1.125 INCHES IN
Nominal Thread Size0.625 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES SECOND END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Reducer TypeCONCENTRIC
Thread Class3B FIRST END
Furnished Items and Quantity1 COMPRESSION SLEEVE
Thread Class3A SECOND END A
Connection TypeTHREADED EXTERNAL TUBE SECOND END
Reduced Passage Nominal Inside Diameter0.034 INCHES SECOND END IN
Thread Series DesignatorUNF ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5360-00-391-084235-71 INTERCHANGEABLE
Spring,helical,extension
Telemechanics Inc
5342-00-450-2268 INTERCHANGEABLE
Sash Fastener
2530-00-481-23092908735 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
Chrysler Realty Company Llc Dba Daimler Chrysler
3120-00-580-1713 INTERCHANGEABLE
Bushing,sleeve
4820-00-587-2219R348 INTERCHANGEABLE
Valve,safety Relief
Aerocontrolex Group, Inc.
5950-00-648-6234504-9245-003 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
5950-00-910-92926140042-2 INTERCHANGEABLE
Transformer,radio Frequency
Viking Technologies, Ltd.
5905-01-093-94370811-0591 INTERCHANGEABLE
Resistor,fixed,wire Wound
Keysight Technologies Inc
5310-01-095-4015357-1 INTERCHANGEABLE
Washer,flat
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5945-01-099-46653571 INTERCHANGEABLE
Relay,electromagnetic
Crown Audio, Inc. Dba Crown International
Cross-Reference Index
Part NumberManufacturer
3571 Alter Harry Co the Div of T E C (USA)
R348 Bosch Automotive Service Solutions Inc. (USA)
R348 Spx Corp (USA)
13214E3596 Cecom Lr Center (USA)
A-5041 PRIMARY Mueller Brass Co. (USA)
UR3-46 Mueller Brass Co. (USA)
Related Parts
5360-00-391-0842INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
35-71
5342-00-450-2268INTERCHANGEABLE
SASH FASTENER
2530-00-481-2309INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
2908735
3120-00-580-1713INTERCHANGEABLE
BUSHING,SLEEVE
4820-00-587-2219INTERCHANGEABLE
VALVE,SAFETY RELIEF
R348
5950-00-648-6234INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
504-9245-003
5950-00-910-9292INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6140042-2
5905-01-093-9437INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
0811-0591
5310-01-095-4015INTERCHANGEABLE
WASHER,FLAT
357-1
5945-01-099-4665INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3571
3130-01-289-4398INTERCHANGEABLE
HOUSING,BEARING UNIT
35-71
4720-01-500-0627INTERCHANGEABLE
HOSE,NONMETALLIC
A357-1

Frequently Asked Questions

What is NSN 4730-00-769-3964?

NSN 4730-00-769-3964 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-769-3964?

NSN 4730-00-769-3964 has 6 cross-referenced part numbers: 3571 (Alter Harry Co the Div of T E C), R348 (Bosch Automotive Service Solutions Inc.), R348 (Spx Corp), 13214E3596 (Cecom Lr Center), A-5041 (Mueller Brass Co.) and 1 more.

What NSN replaces 4730-00-769-3964?

There are 12 known substitutes for 4730-00-769-3964: 5360-00-391-0842, 5342-00-450-2268, 2530-00-481-2309 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-5041?

Key specifications for A-5041: Connection Style: FLARED (TUBE) FIRST END; Seat Angle: 45.0 DEGREES ALL ENDS; Connection Type: THREADED INTERNAL TUBE FIRST END; Nominal Thread Size: 0.438 INCHES FIRST END IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-769-3964 still in active supply?

NSN 4730-00-769-3964 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com