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Technical Data Sheet
JH12991 ✓ 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 BLOCK,TERM is a the manufacturer industrial component. Key specifications include inclosure_type: FULLY INCLOSED, overall_length: 1.313 INCHES NOMINAL IN, mounting_method: THREADED HOLE(S) SINGLE GROUP, frequency_rating: 7.0 KILOHERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT, special_features: ONE PRIMARY WINDING; EIGHT SECONDARY WINDINGS, nominal_thread_size: 0.138 INCHES SINGLE GROUP IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6125-00-511-8785, 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
JH12991
NSN: 6125-00-511-8785
FSC: 6125
CAGE: 31435 — LUCAS AEROSPACE POWER EQUIPMENT CORPORATION (USA)
SPECIFICATIONS
inclosure_typeFULLY INCLOSED
overall_length1.313 INCHES NOMINAL IN
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating7.0 KILOHERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
special_featuresONE PRIMARY WINDING; EIGHT SECONDARY WINDINGS
nominal_thread_size0.138 INCHES SINGLE GROUP IN
body_outside_diameter2.000 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp130.0 CELSIUS DEGC
end_item_identification1430-01-181-5884 BATTERY COMMAND
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
NSN6125-00-511-8785
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BLOCK,TERM TITLE COMPONENT PN JH12991 MFR BLOCK,TERM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
147-1142-1Interchangeable
interchangeable cross-reference
interchangeable
LS031Interchangeable
interchangeable cross-reference
interchangeable
T7610895-97Interchangeable
interchangeable cross-reference
interchangeable
09-12991Interchangeable
interchangeable cross-reference
interchangeable
12991Interchangeable
interchangeable cross-reference
interchangeable
53-95Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JH12991?
JH12991 is a BLOCK,TERM.
What parts can replace JH12991?
There are 15 known substitutes for JH12991: 147-1142-1, LS031, T7610895-97 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for JH12991?
JH12991 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6125-00-511-8785. This indicates validated use in U.S. government and defense supply chains.
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