PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4181173Pneumatic Muffler,exhaust-Intake

Oshkosh Defense Llc · NSN 4730-01-686-5265 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-686-5265 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-686-5265. Primary manufacturer part number: 4181173.
Features
  • Pneumatic Muffler,exhaust-Intake — FSC 4730
  • Overall Diameter: 0.50 INCHES NOMINAL IN
  • Material: ALUMINUM ALLOY LOCATION NOT OTHERWISE SPECIFIED
  • Inlet Connection Type: THREADED FIRST OUTLET
  • Body Shape: ROUND
  • Inlet Connection Quantity: 1
  • 2 verified cross-references
  • Primary manufacturer: Oshkosh Defense Llc
Applications
  • Applications requiring Aluminum Alloy Location Not Otherwise Specified construction
General Description

The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4730-01-686-5265, 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 Oshkosh Defense Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-686-5265
Primary Part Number4181173
Item NamePneumatic Muffler,exhaust-Intake
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusACTIVE
Overall Diameter0.50 INCHES NOMINAL IN
MaterialALUMINUM ALLOY LOCATION NOT OTHERWISE SPECIFIED
Inlet Connection TypeTHREADED FIRST OUTLET
Body ShapeROUND
Inlet Connection Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5360-00-493-39027130-1 INTERCHANGEABLE
Spring,helical,compression
Siemens Industry, Inc. Dba Siemens Energy Div Process Industries and Drives
6680-00-893-633471-3-0-1 INTERCHANGEABLE
Indicator,rate of Flow
Celtech Corporation Div Use CAGE 65552 for All Orders
8320-01-100-61027130-1 INTERCHANGEABLE
Pad,cushioning
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
3040-01-146-41882BC422 INTERCHANGEABLE
Head,linear Actuating Cylinder
Oshkosh Defense Llc
5331-01-420-20807130100 INTERCHANGEABLE
O-Ring
Alfa Laval Inc
4820-01-475-9926713-01 INTERCHANGEABLE
Retainer,disk,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5975-01-511-49094266 005 INTERCHANGEABLE
Junction Box
Altech Corporation
5120-01-644-063271301 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Wiha Quality Tools
Cross-Reference Index
Part NumberManufacturer
4181173 Oshkosh Defense Llc (USA)
71301 Warn Industries, Inc. Dba Warn Div Warn Industries (USA)
Related Parts
5360-00-493-3902INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
7130-1
6680-00-893-6334INTERCHANGEABLE
INDICATOR,RATE OF FLOW
71-3-0-1
8320-01-100-6102INTERCHANGEABLE
PAD,CUSHIONING
7130-1
3040-01-146-4188INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
2BC422
5331-01-420-2080INTERCHANGEABLE
O-RING
7130100
4820-01-475-9926INTERCHANGEABLE
RETAINER,DISK,VALVE
713-01
5975-01-511-4909INTERCHANGEABLE
JUNCTION BOX
4266 005
5120-01-644-0632INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
71301

Frequently Asked Questions

What is NSN 4730-01-686-5265?

NSN 4730-01-686-5265 is a Pneumatic Muffler,exhaust-Intake, manufactured by Oshkosh Defense Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-686-5265?

NSN 4730-01-686-5265 has 2 cross-referenced part numbers: 4181173 (Oshkosh Defense Llc), 71301 (Warn Industries, Inc. Dba Warn Div Warn Industries).

What NSN replaces 4730-01-686-5265?

There are 8 known substitutes for 4730-01-686-5265: 5360-00-493-3902, 6680-00-893-6334, 8320-01-100-6102 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4181173?

Key specifications for 4181173: Overall Diameter: 0.50 INCHES NOMINAL IN; Overall Width: 0.44 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: MUFFLER,EXHAUST,WINCH; Material: ALUMINUM ALLOY LOCATION NOT OTHERWISE SPECIFIED. 8 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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