PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16.22Reducer,tube

The American Society of Mechanical Engineers · NSN 4730-00-277-7526 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-277-7526 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-277-7526. Primary manufacturer part number: B16.22.
Features
  • Reducer,tube — FSC 4730
  • Connection Type: UNTHREADED EXTERNAL TUBE SECOND END
  • Connection Style: CRIMPED (TUBE) FIRST END
  • Connection Style: PLAIN (TUBE) SECOND END
  • Material: COPPER ALLOY OVERALL
  • Nominal Overall Length: 2.430 INCHES IN
  • Nominal Outside Diameter Tube Accommodated: 2.125 INCHES SECOND END IN
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
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 4730-00-277-7526, 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 The American Society of Mechanical Engineers. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN4730-00-277-7526
Primary Part NumberB16.22
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusACTIVE
Connection TypeUNTHREADED EXTERNAL TUBE SECOND END
Connection StyleCRIMPED (TUBE) FIRST END
Connection StylePLAIN (TUBE) SECOND END
MaterialCOPPER ALLOY OVERALL
Nominal Overall Length2.430 INCHES IN
Nominal Outside Diameter Tube Accommodated2.125 INCHES SECOND END IN
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Reducer TypeCONCENTRIC
Nominal Outside Diameter Tube Accommodated1.375 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-226-8274 INTERCHANGEABLE
Plug,tube Fitting,solder Type
4730-00-226-827515-01-7924 INTERCHANGEABLE
Plug,tube Fitting,solder Type
Electric Boat Corporation Div General Dynamics Electric Boat
4730-00-264-9163 INTERCHANGEABLE
Coupling,tube
4730-00-265-7014 INTERCHANGEABLE
Cap,tube
4730-00-265-7017W-7011 INTERCHANGEABLE
Cap,tube
Mueller Brass Co.
4730-00-265-7018W-7012 INTERCHANGEABLE
Cap,tube
Mueller Brass Co.
4730-00-266-1840 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-277-7525 INTERCHANGEABLE
Reducer,tube
4730-00-277-7529 INTERCHANGEABLE
Reducer,tube
4730-00-277-7533 INTERCHANGEABLE
Reducer,tube
Cross-Reference Index
Part NumberManufacturer
B16.22 The American Society of Mechanical Engineers (USA)
B16-22-1963 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
BM11378-32 Demarkus Corp Refrigeration Engineering Corp (USA)
Related Parts
4730-00-226-8274INTERCHANGEABLE
PLUG,TUBE FITTING,SOLDER TYPE
4730-00-226-8275INTERCHANGEABLE
PLUG,TUBE FITTING,SOLDER TYPE
15-01-7924
4730-00-264-9163INTERCHANGEABLE
COUPLING,TUBE
4730-00-265-7014INTERCHANGEABLE
CAP,TUBE
4730-00-265-7017INTERCHANGEABLE
CAP,TUBE
W-7011
4730-00-265-7018INTERCHANGEABLE
CAP,TUBE
W-7012
4730-00-266-1840INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-277-7525INTERCHANGEABLE
REDUCER,TUBE
4730-00-277-7529INTERCHANGEABLE
REDUCER,TUBE
4730-00-277-7533INTERCHANGEABLE
REDUCER,TUBE
4730-00-277-7535INTERCHANGEABLE
REDUCER,TUBE
4730-00-277-7536INTERCHANGEABLE
REDUCER,TUBE

Frequently Asked Questions

What is NSN 4730-00-277-7526?

NSN 4730-00-277-7526 is a Reducer,tube, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-277-7526?

NSN 4730-00-277-7526 has 3 cross-referenced part numbers: B16.22 (The American Society of Mechanical Engineers), B16-22-1963 (American National Standards Institute Incorporated Dba American National Standards Institute), BM11378-32 (Demarkus Corp Refrigeration Engineering Corp).

What NSN replaces 4730-00-277-7526?

There are 12 known substitutes for 4730-00-277-7526: 4730-00-226-8274, 4730-00-226-8275, 4730-00-264-9163 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16.22?

Key specifications for B16.22: Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; Connection Style: CRIMPED (TUBE) FIRST END; Connection Style: PLAIN (TUBE) SECOND END; Material: COPPER ALLOY OVERALL. 9 total characteristics are documented in the Federal Logistics Information System.

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