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Technical Data Sheet
42991 ✓ 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

BREATHER FILTER,EMISSION CONTROL. Key specifications include material: PLASTIC, body_width: 1.130 INCHES MAXIMUM IN, body_length: 0.438 INCHES MAXIMUM IN, overall_width: 23.80 INCHES NOMINAL IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, inclosure_type: HERMETICALLY SEALED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-493-1989, 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
42991
NSN: 2530-00-493-1989
FSC: 2530
CAGE: 10695 — TAYLOR-DUNN CORPORATION DBA METRO CROWN INTERNATIONAL (USA)
SPECIFICATIONS
materialPLASTIC
body_width1.130 INCHES MAXIMUM IN
body_length0.438 INCHES MAXIMUM IN
overall_width23.80 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeHERMETICALLY SEALED
overall_height26.80 INCHES NOMINAL IN
overall_length59.50 INCHES NOMINAL IN
inductance_typeFIXED
mounting_methodTAB SINGLE GROUP
frequency_rating1.0 KILOHERTZ NOMINAL SINGLE COMPONENT
special_featuresFOR DESTRUCTOR MINE MK 62 MOD 2
NSN2530-00-493-1989
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BREATHER FILTER,EMISSION CONTROL TITLE COMPONENT PN 42991 MFR BREATHER FILTER,EMISSI
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
211-001Interchangeable
interchangeable cross-reference
interchangeable
T1704Interchangeable
interchangeable cross-reference
interchangeable
Y1070Interchangeable
interchangeable cross-reference
interchangeable
100858Interchangeable
interchangeable cross-reference
interchangeable
AF-74707Interchangeable
interchangeable cross-reference
interchangeable
25410-29Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 42991?
42991 is a BREATHER FILTER,EMISSION CONTROL.
What parts can replace 42991?
There are 23 known substitutes for 42991: 211-001, T1704, Y1070 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42991?
42991 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-493-1989. This indicates validated use in U.S. government and defense supply chains.
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