4730-01-550-4037 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Pneumatic Muffler,exhaust-Intake — FSC 4730
Inlet Outside Diameter: 0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outlet Connection Quantity: 1
Overall Diameter: 4.000 INCHES NOMINAL IN
Inlet Connection Quantity: 1
Muffler Design: STRAIGHT THROUGH
Outlet Outside Diameter: 0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Inlet Connection Type: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
Identification
NSN: 4730-01-550-4037
NIIN: 015504037
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4730-01-550-4037, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outlet Connection Quantity
1
Overall Diameter
4.000 INCHES NOMINAL IN
Inlet Connection Quantity
1
Muffler Design
STRAIGHT THROUGH
Outlet Outside Diameter
0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Inlet Connection Type
UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
Body Shape
ROUND
Outlet Connection Type
THREADED LOCATION NOT OTHERWISE SPECIFIED
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
S-6407
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE
Frequently Asked Questions
What is NSN 4730-01-550-4037?
NSN 4730-01-550-4037 is a Pneumatic Muffler,exhaust-Intake, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What are the specifications of 4730-01-550-4037?
Key specifications for 4730-01-550-4037: Inlet Outside Diameter: 0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Outlet Connection Quantity: 1; Overall Diameter: 4.000 INCHES NOMINAL IN; Inlet Connection Quantity: 1. 9 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-550-4037 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.