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IH29 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SWITCH,CODE INDICATING WHEEL is a the manufacturer industrial component. Key specifications include material: ASBESTOS INSULATION, body_shape: ROUND, design_type: JACKETED, inlet_location: CENTRALLY LOCATED ON END OF BODY, muffler_design: MULTIPASS, overall_length: 27.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-00-931-8078, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
IH29
NSN: 2990-00-931-8078
FSC: 2990
CAGE: 26978 — GENERAL DYNAMICS - OTS, INC. (USA)
SPECIFICATIONS
materialASBESTOS INSULATION
body_shapeROUND
design_typeJACKETED
tube_quantity3
inlet_locationCENTRALLY LOCATED ON END OF BODY
muffler_designMULTIPASS
overall_length27.750 INCHES NOMINAL IN
outlet_locationCENTRALLY LOCATED ON END OF BODY
overall_diameter5.000 INCHES NOMINAL IN
operating_positionHORIZONTAL
inlet_connection_typeUNTHREADED SINGLE INLET
inlet_inside_diameter2.500 INCHES NOMINAL SINGLE INLET IN
NSN2990-00-931-8078
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,CODE INDICATING WHEEL TITLE COMPONENT PN IH29 MFR SWITCH,CODE INDICATING
KEY FEATURES
•
OUTLET INSIDE DIAMETER: 2.000 INCHES NOMINAL FIRST OUTLET IN
•
MUFFLER DESIGN: MULTIPASS
•
DESIGN TYPE: JACKETED
•
TUBE QUANTITY: 3
•
BODY SHAPE: ROUND
•
OUTLET LOCATION: CENTRALLY LOCATED ON END OF BODY
•
INLET INSIDE DIAMETER: 2.500 INCHES NOMINAL SINGLE INLET IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTLET INSIDE DIAMETER2.000 INCHES NOMINAL FIRST OUTLET IN
MUFFLER DESIGNMULTIPASS
DESIGN TYPEJACKETED
OVERALL LENGTH27.750 INCHES NOMINAL IN
TUBE QUANTITY3
BODY SHAPEROUND
OUTLET LOCATIONCENTRALLY LOCATED ON END OF BODY
INLET INSIDE DIAMETER2.500 INCHES NOMINAL SINGLE INLET IN
OUTLET CONNECTION TYPEUNTHREADED FIRST OUTLET
INLET CONNECTION TYPEUNTHREADED SINGLE INLET
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
933SWInterchangeable
interchangeable cross-reference
interchangeable
933Interchangeable
interchangeable cross-reference
interchangeable
25010040Interchangeable
interchangeable cross-reference
interchangeable
121562-1Interchangeable
interchangeable cross-reference
interchangeable
1991Interchangeable
interchangeable cross-reference
interchangeable
7-K-20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IH29?
IH29 is a SWITCH,CODE INDICATING WHEEL.
What parts can replace IH29?
There are 22 known substitutes for IH29: 933SW, 933, 25010040 and 19 more. Substitute compatibility should be verified for your specific system.
Is IH29 still available?
IH29 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026