21ER4 — SWITCH,SENSITIVE

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

21ER4: SWITCH,SENSITIVE.

The SWITCH,SENSITIVE is a the manufacturer industrial component. Key specifications include housing_width: 2.250 INCHES NOMINAL IN, overall_width: 2.547 INCHES NOMINAL IN, actuator_style: ROUND, housing_height: 1.125 INCHES NOMINAL IN, housing_length: 2.812 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED. This part is cataloged in the U.S.

Government catalog under NSN 5930-00-034-0571, 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→ 21ER4

NSN: 5930-00-034-0571
FSC: 5930 — Switches
CAGE: 91929 — HONEYWELL INTERNATIONAL INC. DBA HONEYWEEL SENSING & CONTROLS (USA)

SPECIFICATIONS

housing_width	2.250 INCHES NOMINAL IN
overall_width	2.547 INCHES NOMINAL IN
actuator_style	ROUND
housing_height	1.125 INCHES NOMINAL IN
housing_length	2.812 INCHES NOMINAL IN
inclosure_type	FULLY INCLOSED
overall_height	1.984 INCHES NOMINAL IN
overall_length	3.937 INCHES NOMINAL IN
actuator_height	0.562 INCHES NOMINAL IN
mounting_method	TERMINAL
actuator_diameter	0.244 INCHES NOMINAL IN
actuator_movement	10.0 DIFFERENTIAL DEGREES MAXIMUM
NSN	5930-00-034-0571

COMPONENT DIAGRAM

KEY FEATURES

•

ACTUATOR DIAMETER: 0.244 INCHES NOMINAL IN

•

INCLOSURE TYPE: FULLY INCLOSED

•

HOUSING HEIGHT: 1.125 INCHES NOMINAL IN

•

ACTUATOR STYLE: ROUND

•

CENTER TO CENTER DISTANCE BETWEEN HOUSING MOUNTING FACILITIES PARALLEL TO LENGTH: 2.437 INCHES NOMINAL IN

•

CENTER TO CENTER DISTANCE BETWEEN HOUSING MOUNTING FACILITIES PARALLEL TO WIDTH: 1.875 INCHES NOMINAL IN

•

MOUNTING METHOD: TERMINAL

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	1.984 INCHES NOMINAL IN
ACTUATOR DIAMETER	0.244 INCHES NOMINAL IN
INCLOSURE TYPE	FULLY INCLOSED
HOUSING HEIGHT	1.125 INCHES NOMINAL IN
ACTUATOR STYLE	ROUND
CENTER TO CENTER DISTANCE BETWEEN HOUSING MOUNTING FACILITIES PARALLEL TO LENGTH	2.437 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN HOUSING MOUNTING FACILITIES PARALLEL TO WIDTH	1.875 INCHES NOMINAL IN
MOUNTING METHOD	TERMINAL
OVERALL LENGTH	3.937 INCHES NOMINAL IN
OVERALL WIDTH	2.547 INCHES NOMINAL IN

SUBSTITUTES & CROSS-REFERENCES 4

8532047Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

10HF3Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

1HA11Reference document

Same NSN cross-reference

Reference document — Secondary reference

H10-1015-4Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 21ER4?

21ER4 is a SWITCH,SENSITIVE. It is classified as a MRO (MRO_GENERAL).

What parts can replace 21ER4?

There are 4 known substitutes for 21ER4: 8532047, 10HF3, 1HA11 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 21ER4?

21ER4 is cataloged in the U.S. Government catalog under NSN 5930-00-034-0571. This indicates validated use in U.S. government and defense supply chains.

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