NSN 2990-00-493-7378 NIIN 004937378 — Exhaust Muffler

NSN
Item Name
Assigned
DEMIL
Shelf Life
UOM
Using Services
NSN:
2990-00-493-7378
2990004937378
Description:
MUFFLER,EXHAUST
NSN Assigned:
16-FEB-70
DEMIL:
NO
Shelf Life:
N/A
UOM:
1 EA
Using Services:
Navy

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
  •   ITAR Registered
  •   DDTC Registered
  •   HAZMAT Certified
  •   Customer service objectives
  •   Every product 100% inspected
AS9120 Certified by SAI Global

2990-00-493-7378 Specification Set by the OEM (see RNCC code 3)

Overall Length ABHP:

37.500in. ⁓37-1/2"

Inlet Connection Type ACQW:

flange

Overall Diameter ADAV:

22.000in. ⁓22-1/64"

Outlet Inside Diameter AJLW:

any acceptable

Design Type APGF:

wet

Coolant Type ARNA:

water

Muffler Design ARND:

multipass

Body Shape ARNG:

round

Operating Position ARNH:

any acceptable

Inlet Location ARNJ:

on side 2.000 in. from vertical @centerline of body, on side directly opposite other inlet

Inlet Projection Length ARNK:

4.000in.

Inlet Flange Shape ARNL:

round

Inlet Flange Mounting Provision And Quantity ARNM:

6 holes

Inlet Flange Mounting Hole Diameter ARNN:

0.688in.

Inlet Flange Mounting Provision Spacing ARNT:

12.000 in. bolt cirle dia 1st inlet, 12.000 in. bolt circle dia 2nd inlet

Outlet Connection Type ARTH:

unthreaded

Outlet Location ARTJ:

centrally located in end section of body

Outlet Projection Length ARTK:

any acceptable

Outlet Outside Diameter ARWA:

8.625in.

Err Default ARWE:

err default

Err Default ARWF:

err default

Err Default ARWG:

err default

Err Default ARXC:

err default

Err Default ARXD:

err default

Special Features FEAT:

90.0 deg elbow for outlet, mtg plates

Material MATL:

steel

Material MATT:

steel

Surface Treatment SURF:

any acceptable

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Part Number
Cage
RNCC
RNVC
DAC
RNAAC
Status
MSDS
SADC
Part Number:
M1-740-6IN
Cage Code:
23623
RNCC:
3
RNVC:
9
DAC:
1
RNAAC:
AX
Status:
A
MSDS:
SADC:

Identification Item Identification Guide (IIG) and Item Name Code (INC)

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
10849
FIIG:
T135-C
Concept No.:
1
App. Key:
CA
Cond. Code:
2
Status:
A

2990-00-493-7378 Material Hazmat, Precious Metals, Criticality, Enviroment, and ESD

HMIC
PMIC
ESD
ENAC
ADPE
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
ADPE:
CRITL:
X
Hazmat (HMIC) N

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

Precious Metals (PMIC) U

Precious metal content is unknown

Criticality X

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

  Identification Codes

HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.

PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.

ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.

ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.

CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.

Material Management Material categorization and source of supply

SOS
SMIC
MMAC
MCC
SOS:
SMS
SOS:
MMAC:
MCC:
Source of Supply (SOS) SMS

Defense logistics agency, enterprise business systems

  Material Codes

SOS: Source of Supply. A three position code or routing identifier code (ric), which identifies the source of supply activity.

SMIC: Special Material Indicator Code. A two position code, which categorizes material on the basis of requirements for source or quality control, technical design or configuration control, procurement, stocking and issue control, special receipt, inspection, testing, storage, or handling.

MMAC: Material Management Aggregation Code. A two position code that identifies an item of supply to be managed by a specific activity manager.

MCC: Material Echelon Code. A two position code employed by the marine corps in classifying items into categories by materiel category and procurement echelon. the alphanumeric management code is in the first position and identifies the materiel category

IMC: Denotes wether items shall be subjected to integrated management under the defense supply agency or retained by the individual military service or other department of defense components for their management. Assigned by th activity responsible for item management coding.