840-3-21 — SWITCH ASSEMBLY

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

840-3-21: SWITCH ASSEMBLY.

The SWITCH ASSEMBLY is a the manufacturer industrial component. Key specifications include body_width: 3.250 INCHES MAXIMUM IN, body_height: 3.500 INCHES MAXIMUM IN, body_length: 3.500 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, overall_height: 5.560 INCHES NOMINAL IN, mounting_method: THREADED HOLE(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-329-5504, 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

840-3-21

NSN: 5950-00-329-5504
NIINs: 003295504, 013641464
FSC: 5950 — Coils and Transformers
CAGE: 91196 — NORTH ERIE ELECTRONICS, INC DBA FISHER ENGINEERING (USA)

SPECIFICATIONS

body_width	3.250 INCHES MAXIMUM IN
body_height	3.500 INCHES MAXIMUM IN
body_length	3.500 INCHES MAXIMUM IN
inclosure_type	HERMETICALLY SEALED
overall_height	5.560 INCHES NOMINAL IN
mounting_method	THREADED HOLE(S) SINGLE GROUP
frequency_rating	400.0 HERTZ NOMINAL SINGLE COMPONENT
special_features	FOR USE ON ORTHOPEDIC CAST CUTTER; MDL. 840-100
nominal_thread_size	0.190 INCHES SINGLE GROUP IN
reliability_indicator	NOT ESTABLISHED
end_item_identification	6515-01-291-5447
thread_quantity_per_inch	32 SINGLE GROUP
NSN	5950-00-329-5504

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP

•

INCLOSURE TYPE: HERMETICALLY SEALED

•

CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN

•

INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT

•

MOUNTING METHOD: THREADED HOLE(S) SINGLE GROUP

•

BODY WIDTH: 3.250 INCHES MAXIMUM IN

•

BODY HEIGHT: 3.500 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	5.560 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY	4 SINGLE GROUP
INCLOSURE TYPE	HERMETICALLY SEALED
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH	2.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
INPUT-OUTPUT PHASE RELATIONSHIP	SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
MOUNTING METHOD	THREADED HOLE(S) SINGLE GROUP
BODY WIDTH	3.250 INCHES MAXIMUM IN
BODY HEIGHT	3.500 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATION	FEAT
WINDING FUNCTION AND QUANTITY	1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT

SUBSTITUTES & CROSS-REFERENCES 7

8132Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

7637674P0001Reference document

Same NSN cross-reference

Reference document — Secondary reference

7637674P1Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

5807Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

44048Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

GE-185-PReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation

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FREQUENTLY ASKED QUESTIONS

What is 840-3-21?

840-3-21 is a SWITCH ASSEMBLY.

What parts can replace 840-3-21?

There are 7 known substitutes for 840-3-21: 8132, 7637674P0001, 7637674P1 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 840-3-21?

840-3-21 is cataloged in the U.S. Government catalog under NSN 5950-00-329-5504. This indicates validated use in U.S. government and defense supply chains.

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