28-1921-4 — SWITCH,ROTARY

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

28-1921-4: SWITCH,ROTARY.

The SWITCH,ROTARY is a the manufacturer industrial component. Key specifications include shaft_type: ROUND, FLATTED SINGLE ACTUATOR, flat_height: 0.210 INCHES NOMINAL SINGLE ACTUATOR IN, shaft_length: 0.625 INCHES NOMINAL SINGLE ACTUATOR IN, thread_class: 2A SINGLE MOUNTING FACILITY A, pole_quantity: 1 EACH SECTION FRONT, terminal_type: TAB, SOLDER LUG. This part is cataloged in the U.S.

Government catalog under NSN 5930-01-079-7410, 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→ 28-1921-4

NSN: 5930-01-079-7410
FSC: 5930 — Switches
CAGE: 91812 — JANCO CORPORATION DBA JANCO CORP DIV MASON CONTROLS (USA)

SPECIFICATIONS

shaft_type	ROUND, FLATTED SINGLE ACTUATOR
flat_height	0.210 INCHES NOMINAL SINGLE ACTUATOR IN
shaft_length	0.625 INCHES NOMINAL SINGLE ACTUATOR IN
thread_class	2A SINGLE MOUNTING FACILITY A
pole_quantity	1 EACH SECTION FRONT
terminal_type	TAB, SOLDER LUG
thread_length	0.437 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
overall_length	3.392 INCHES NOMINAL IN
shaft_diameter	0.250 INCHES NOMINAL SINGLE ACTUATOR IN
throw_quantity	10 EACH SECTION REAR
mounting_method	THREADED BUSHING SINGLE MOUNTING FACILITY
overall_diameter	1.100 INCHES NOMINAL IN
NSN	5930-01-079-7410

COMPONENT DIAGRAM

KEY FEATURES

•

SHAFT TYPE: ROUND, FLATTED SINGLE ACTUATOR

•

SHAFT DIAMETER: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN

•

SWITCH CONTACT BASIC DESIGN: NONPILE-UP SYMMETRICAL

•

NONTURN DEVICE RADIUS: 0.432 INCHES NOMINAL AT 3:00 OCLOCK IN

•

TERMINAL TYPE: TAB, SOLDER LUG

•

OVERALL DIAMETER: 1.100 INCHES NOMINAL IN

•

FIRST FLAT LENGTH: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN

•

DETENT ROTATIONAL TORQUE RANGE: +0.000 TO 4.000 INCH-POUNDS SINGLE ACTUATOR IN

TECHNICAL CHARACTERISTICS

SHAFT TYPE	ROUND, FLATTED SINGLE ACTUATOR
SHAFT DIAMETER	0.250 INCHES NOMINAL SINGLE ACTUATOR IN
SWITCH CONTACT BASIC DESIGN	NONPILE-UP SYMMETRICAL
NONTURN DEVICE RADIUS	0.432 INCHES NOMINAL AT 3:00 OCLOCK IN
TERMINAL TYPE	TAB, SOLDER LUG
OVERALL DIAMETER	1.100 INCHES NOMINAL IN
FIRST FLAT LENGTH	0.250 INCHES NOMINAL SINGLE ACTUATOR IN
DETENT ROTATIONAL TORQUE RANGE	+0.000 TO 4.000 INCH-POUNDS SINGLE ACTUATOR IN
PRECIOUS MATERIAL	GOLD AND SILVER
ROTOR THROUGH CONNECTION QUANTITY	1 EACH SECTION

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 1

561133-4Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 28-1921-4?

28-1921-4 is a SWITCH,ROTARY. It is classified as a MRO (MRO_GENERAL).

What parts can replace 28-1921-4?

There is 1 known substitute for 28-1921-4: 561133-4. Substitute compatibility should be verified for your specific system.

What is the NSN for 28-1921-4?

28-1921-4 is cataloged in the U.S. Government catalog under NSN 5930-01-079-7410. This indicates validated use in U.S. government and defense supply chains.

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