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Technical Data Sheet
PartsTable / MRO / 123978H1
123978H1 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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,TOGGLE is a the manufacturer industrial component. Key specifications include body_style: HOLE MOUNT, body_width: 0.750 INCHES NOMINAL IN, actuator_style: ROUND, inclosure_type: FULLY INCLOSED, actuator_height: 0.875 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-008-0512, 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
MRO→ MRO_GENERAL→ 123978H1
NSN: 5930-00-008-0512
FSC: 5930
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
body_styleHOLE MOUNT
body_width0.750 INCHES NOMINAL IN
actuator_styleROUND
inclosure_typeFULLY INCLOSED
actuator_height0.875 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
actuator_diameter0.237 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
precious_material_and_locationCONTACTS SILVER
center_to_center_distance_between_mounting_facilities_parallel_to_length1.812 INCHES NOMINAL IN
NSN5930-00-008-0512
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,TOGGLE TITLE COMPONENT PN 123978H1 MFR SWITCH,TOGGLE
KEY FEATURES
•
INCLOSURE TYPE: FULLY INCLOSED
•
MOUNTING METHOD: UNTHREADED HOLE(S)
•
ACTUATOR DIAMETER: 0.237 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
•
PRECIOUS MATERIAL AND LOCATION: CONTACTS SILVER
•
ACTUATOR HEIGHT: 0.875 INCHES NOMINAL IN
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 1.812 INCHES NOMINAL IN
•
ACTUATOR STYLE: ROUND
•
BODY WIDTH: 0.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INCLOSURE TYPEFULLY INCLOSED
MOUNTING METHODUNTHREADED HOLE(S)
ACTUATOR DIAMETER0.237 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
PRECIOUS MATERIAL AND LOCATIONCONTACTS SILVER
ACTUATOR HEIGHT0.875 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH1.812 INCHES NOMINAL IN
ACTUATOR STYLEROUND
BODY WIDTH0.750 INCHES NOMINAL IN
BODY STYLEHOLE MOUNT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
FCD56985-1Interchangeable
interchangeable cross-reference
interchangeable
14-52537-1Interchangeable
interchangeable cross-reference
interchangeable
SG-68/FPS-8Interchangeable
interchangeable cross-reference
interchangeable
5100-4Interchangeable
interchangeable cross-reference
interchangeable
9050-1Interchangeable
interchangeable cross-reference
interchangeable
309634Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 123978H1?
123978H1 is a SWITCH,TOGGLE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 123978H1?
There are 6 known substitutes for 123978H1: FCD56985-1, 14-52537-1, SG-68/FPS-8 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 123978H1?
123978H1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5930-00-008-0512. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026