Exhaust Muffler

NSN: 2990-00-203-4257 | Model: 7839437-10

NSN Properties and Flags

NATO Stock Number

2990-00-203-4257

DEMIL

Insulation Material

Spun glass

Overall Length

23.875 inches

Inlet Connection Type

Unthreaded

Overall Diameter

5.500 inches

Outlet Inside Diameter

5.000 inches

Design Type

Dry

Muffler Design

Straight through

Body Shape

Round

Operating Position

Vertical

Inlet Location

Centrally located in end section of body

Inlet Projection Length

3.500 inches

Inlet Outside Diameter

3.000 inches

Inlet Inside Diameter

2.924 inches

Outlet Connection Type

Unthreaded single inlet

Outlet Location

Centrally located in end section of body

Outlet Flange Shape

Round

Outlet Flange Mounting Provision And Quantity

6 holes

Outlet Flange Mounting Hole Diameter

0.200 inches

Outlet Flange Mounting Provision Spacing

6-3/4 in. Diameter bolt circle

Outlet Outside Diameter

5.500 inches

Material

Steel, mil-s-6721

Material

Steel comp 347 or steel comp 321 or steel comp 348

Material Specification

Mil-s-6721 military specification single material response

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

Certified Quality Assurance

ISO 9001:2015 + AS9120B
Counterfeit Parts Prevention
100% Product Inspections
7 Year Record Retention
On Time Delivery
HAZMAT Certified
Worldwide Shipping

NSN 2990-00-203-4257 Datasheet

Supply Class (FSC):

Nonaircraft Miscellaneous Engine Accessories

Cross Reference:

7839437-10
7545785-10
235-0076-16
64D24694
7839437-10
7545785-10
235-0076-16
64D24694
7839437-10
7545785-10
235-0076-16
64D24694
7839437-10
7545785-10
235-0076-16
64D24694

Cage Codes:

Harco Manufacturing Company (CAGE 22165)
Beechcraft Corporation (CAGE 70898)
San Antonio Air Logistics Center (CAGE 98750)

Schedule B & Trade:

Schedule B: 8708925000 (NAICS 336390)

Mufflers and exhaust pipes for vehicles, nesoi
SITC: 78439

Parts and accessories n.E.S. For tractors, motor cars and other motor vehicles, trucks, public-transport vehicles and road motor vehicles, n.E.S.
End Use: 30230

Other parts and accessories of vehicles

Identification:

HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:

NMFC:

000000 - No nmfc freight description
WCC:

593 - Motors and parts, (machinery and parts),(less than 35 feet)
ADC:

A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.
LCL:

M - 85.0
ACC:

V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing
LTL:

Z - No rating
SHC:

Z - Other or no special handling required (sh)
TCC:

Z - No special type of cargo code applicable

NSN Management Codes:

SOS
Sms
AAC
J
Quantity per pack
1
Unit of Measure
Ea
Shelf Life
N/A
Classification Control
U
MGMT_CTL
Sf9su-v
Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $87.08 to $145.13..
Does NSN 2990-00-203-4257 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, Brazil, Canada, and Republic Of Korea
What is the NIIN of NSN 2990-00-203-4257?
002034257 or 00-203-4257
Does NSN 2990-00-203-4257 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 2990-00-203-4257?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jan 01, 1963