PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W1325Reducer,tube

Mueller Brass Co. · NSN 4730-00-277-6596 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-277-6596 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-277-6596. Primary manufacturer part number: W1325.
Features
  • Reducer,tube — FSC 4730
  • Connection Type: UNTHREADED EXTERNAL TUBE SECOND END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Connection Style: PLAIN (TUBE) SECOND END
  • Nominal Overall Length: 1.750 INCHES IN
  • Connection Style: PLAIN (TUBE) FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.875 INCHES FIRST END IN
  • Reducer Type: CONCENTRIC
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 4730-00-277-6596, 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 9 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: Active.

Technical Specifications
ParameterValue
NSN4730-00-277-6596
Primary Part NumberW1325
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Connection TypeUNTHREADED EXTERNAL TUBE SECOND END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Connection StylePLAIN (TUBE) SECOND END
Nominal Overall Length1.750 INCHES IN
Connection StylePLAIN (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated0.875 INCHES FIRST END IN
Reducer TypeCONCENTRIC
MaterialCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated0.750 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-018-1415 INTERCHANGEABLE
Connector Body,receptacle,electr
6610-00-089-69503935 INTERCHANGEABLE
Indicator,turn and Slip
Mid-Continent Instrument Co Inc
5999-00-117-39333935 INTERCHANGEABLE
Contact,electrical
The Bechdon Company, Llc
4730-00-202-7204AN746-14 INTERCHANGEABLE
Clamp,hose
Dana Off Highway Products, Llc
4730-00-277-584444Z963D9 INTERCHANGEABLE
Clamp,hose
Morris Material Handling, Inc.
4730-00-277-5851 INTERCHANGEABLE
Clamp,hose
4730-00-277-8443 INTERCHANGEABLE
Clamp,hose
4730-00-277-8444 INTERCHANGEABLE
Clamp,hose
5905-00-853-48602100-0035 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Keysight Technologies Inc
5905-01-106-900155-0225-30005DS INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Grimes Aerospace Company
Cross-Reference Index
Part NumberManufacturer
W1325 PRIMARY Mueller Brass Co. (USA)
3935 Drs Environmental Systems Inc (USA)
W1325 Johnson Controls Navy Systems, Llc (USA)
451062PC23 Johnson Controls Navy Systems, Llc (USA)
3935 Keco Industries, Inc. (USA)
3935 Hdt Expeditionary Systems Inc (USA)
Related Parts
5935-00-018-1415INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
6610-00-089-6950INTERCHANGEABLE
INDICATOR,TURN AND SLIP
3935
5999-00-117-3933INTERCHANGEABLE
CONTACT,ELECTRICAL
3935
4730-00-202-7204INTERCHANGEABLE
CLAMP,HOSE
AN746-14
4730-00-277-5844INTERCHANGEABLE
CLAMP,HOSE
44Z963D9
4730-00-277-5851INTERCHANGEABLE
CLAMP,HOSE
4730-00-277-8443INTERCHANGEABLE
CLAMP,HOSE
4730-00-277-8444INTERCHANGEABLE
CLAMP,HOSE
5905-00-853-4860INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
2100-0035
5905-01-106-9001INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
55-0225-30005DS
6520-01-368-8397INTERCHANGEABLE
CROWN,DENTAL,TEMPORARY
7000053327
6620-01-565-6347INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
W1325

Frequently Asked Questions

What is NSN 4730-00-277-6596?

NSN 4730-00-277-6596 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-277-6596?

NSN 4730-00-277-6596 has 6 cross-referenced part numbers: W1325 (Mueller Brass Co.), 3935 (Drs Environmental Systems Inc), W1325 (Johnson Controls Navy Systems, Llc), 451062PC23 (Johnson Controls Navy Systems, Llc), 3935 (Keco Industries, Inc.) and 1 more.

What NSN replaces 4730-00-277-6596?

There are 12 known substitutes for 4730-00-277-6596: 5935-00-018-1415, 6610-00-089-6950, 5999-00-117-3933 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W1325?

Key specifications for W1325: Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; Connection Type: UNTHREADED INTERNAL TUBE FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Nominal Overall Length: 1.750 INCHES IN. 9 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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