PartsTable
Technical Data Sheet

MST-121D-PC/G1 — SWITCH,TOGGLE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

MST-121D-PC/G1: SWITCH,TOGGLE.

The SWITCH,TOGGLE is a the manufacturer industrial component. Key specifications include body_style: BUSHING MOUNT, body_width: 0.275 INCHES NOMINAL IN, body_height: 0.530 INCHES NOMINAL IN, body_length: 0.520 INCHES NOMINAL IN, overall_width: 0.275 INCHES NOMINAL IN, actuator_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-157-9589, 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
MST-121D-PC/G1
NSN: 5930-01-157-9589
FSC: 5930 — Switches
CAGE: 95146 — ALCO ELECTRONIC PRODUCTS INC (USA)
SPECIFICATIONS
body_styleBUSHING MOUNT
body_width0.275 INCHES NOMINAL IN
body_height0.530 INCHES NOMINAL IN
body_length0.520 INCHES NOMINAL IN
overall_width0.275 INCHES NOMINAL IN
actuator_styleROUND
bushing_length0.315 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height1.413 INCHES NOMINAL IN
overall_length0.520 INCHES NOMINAL IN
actuator_height0.413 INCHES NOMINAL IN
mounting_methodTHREADED BUSHING
NSN5930-01-157-9589
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SWITCH,TOGGLE TITLE COMPONENT PN MST-121D-PC/G1 MFR SWITCH,TOGGLE
KEY FEATURES
•
BUSHING LENGTH: 0.315 INCHES NOMINAL IN
•
INCLOSURE TYPE: FULLY INCLOSED
•
BODY STYLE: BUSHING MOUNT
•
ACTUATOR STYLE: ROUND
•
MOUNTING METHOD: THREADED BUSHING
•
BODY WIDTH: 0.275 INCHES NOMINAL IN
•
BODY HEIGHT: 0.530 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
BUSHING LENGTH0.315 INCHES NOMINAL IN
OVERALL HEIGHT1.413 INCHES NOMINAL IN
INCLOSURE TYPEFULLY INCLOSED
BODY STYLEBUSHING MOUNT
ACTUATOR STYLEROUND
MOUNTING METHODTHREADED BUSHING
BODY WIDTH0.275 INCHES NOMINAL IN
BODY HEIGHT0.530 INCHES NOMINAL IN
MOUNTING SURFACE TO TERMINAL END DISTANCE0.685 INCHES NOMINAL IN
OVERALL LENGTH0.520 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5930 — Switches
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5930-00-000-0117 5930-00-001-1407 5930-00-001-1890 5930-00-001-2571 5930-00-001-2575 5930-00-001-2580 5930-00-001-2608 5930-00-001-2609
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MST-121D-PC/G1?
MST-121D-PC/G1 is a SWITCH,TOGGLE.
What is the NSN for MST-121D-PC/G1?
MST-121D-PC/G1 is cataloged in the U.S. Government catalog under NSN 5930-01-157-9589. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.