PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2729Union,pipe

Flowserve Inc · NSN 4730-00-388-8796 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-388-8796 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-388-8796. Primary manufacturer part number: 2729.
Features
  • Union,pipe — FSC 4730
  • Coupling Flange Shape: SQUARESQUARE
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST ENDUNTHREADED INTERNAL PIPE FIRST END
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 FIRST END
  • Nominal Pipe Size Accommodated: 2.500 INCHES FIRST END2.500 INCHES FIRST END IN
  • Reduced Passage Nominal Inside Diameter: 2.470 INCHES FIRST END IN
  • Material: STEEL UNION
  • Nominal Overall Length: 2.938 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Union construction
General Description

The Union,pipe, cataloged under National Stock Number 4730-00-388-8796, 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 Flowserve Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN4730-00-388-8796
Primary Part Number2729
Item NameUnion,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Coupling Flange ShapeSQUARESQUARE
Connection TypeUNTHREADED INTERNAL PIPE FIRST ENDUNTHREADED INTERNAL PIPE FIRST END
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 FIRST END
Nominal Pipe Size Accommodated2.500 INCHES FIRST END2.500 INCHES FIRST END IN
Reduced Passage Nominal Inside Diameter2.470 INCHES FIRST END IN
MaterialSTEEL UNION
Nominal Overall Length2.938 INCHES IN
Maximum Operating Temp37.8 CELSIUS SINGLE RESPONSE37.8 CELSIUS SINGLE RESPONSE DEGC
MaterialSTEEL UNIONSTEEL BOLT
Connection StyleSOCKET (PIPE) FIRST ENDSOCKET (PIPE) FIRST END
Operating Pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-0360100054 INTERCHANGEABLE
Cup,tapered Roller Bearing
Allianz Sweeper Company
4920-00-138-70912729 INTERCHANGEABLE
Case-Cable Assembly
Mission Systems Davenport Inc.
5325-00-174-9829395582 INTERCHANGEABLE
Ring,retaining
Lockheed Martin Corporation Div Rms
5985-00-506-0532 INTERCHANGEABLE
Attenuator,fixed
5905-00-798-576227-29 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Keysight Technologies Inc
5935-00-903-301727-29 INTERCHANGEABLE
Adapter,connector
Amphenol Corporation Div Amphenol Rf
5945-01-089-2119MA2729 INTERCHANGEABLE
Relay
Avo Multi-Amp Corp
5930-01-210-5399012520 INTERCHANGEABLE
Retainer,electrical Switch
Jacobs Mfg Co the
5950-01-250-1563135-003-5052 INTERCHANGEABLE
Transformer,power
Moog Inc.
5930-01-424-51362729 INTERCHANGEABLE
Switch,rotary
Electro Switch Corp. Dba Electro Switch Corp
Cross-Reference Index
Part NumberManufacturer
2729 Flowserve Inc (USA)
2721 Flowserve Inc (USA)
Related Parts
3110-00-100-0360INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
100054
4920-00-138-7091INTERCHANGEABLE
CASE-CABLE ASSEMBLY
2729
5325-00-174-9829INTERCHANGEABLE
RING,RETAINING
395582
5985-00-506-0532INTERCHANGEABLE
ATTENUATOR,FIXED
5905-00-798-5762INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
27-29
5935-00-903-3017INTERCHANGEABLE
ADAPTER,CONNECTOR
27-29
5945-01-089-2119INTERCHANGEABLE
RELAY
MA2729
5930-01-210-5399INTERCHANGEABLE
RETAINER,ELECTRICAL SWITCH
012520
5950-01-250-1563INTERCHANGEABLE
TRANSFORMER,POWER
135-003-5052
5930-01-424-5136INTERCHANGEABLE
SWITCH,ROTARY
2729
6515-01-549-3701INTERCHANGEABLE
SYRINGE AND NEEDLE,HYPODERMIC,SA
10151
2940-01-626-2228INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
RS4161

Frequently Asked Questions

What is NSN 4730-00-388-8796?

NSN 4730-00-388-8796 is a Union,pipe, manufactured by Flowserve Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-388-8796?

NSN 4730-00-388-8796 has 2 cross-referenced part numbers: 2729 (Flowserve Inc), 2721 (Flowserve Inc).

What NSN replaces 4730-00-388-8796?

There are 12 known substitutes for 4730-00-388-8796: 3110-00-100-0360, 4920-00-138-7091, 5325-00-174-9829 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2729?

Key specifications for 2729: Coupling Flange Shape: SQUARESQUARE; Connection Type: UNTHREADED INTERNAL PIPE FIRST ENDUNTHREADED INTERNAL PIPE FIRST END; Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 FIRST END; Nominal Pipe Size Accommodated: 2.500 INCHES FIRST END2.500 INCHES FIRST END IN. 11 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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