K-3978 — POLARIZING KEY,ELECTRICAL CONNEC

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

K-3978: POLARIZING KEY,ELECTRICAL CONNEC.

POLARIZING KEY,ELECTRICAL CONNEC. Key specifications include body_width: 0.828 INCHES MAXIMUM IN, body_height: 1.195 INCHES MAXIMUM IN, body_length: 1.105 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, mounting_method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-105-9598, 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

K-3978

NSN: 5950-00-105-9598
NIINs: 001059598, 012985079
FSC: 5950 — Coils and Transformers
CAGE: 51181 — KEYTRONICS, INC. DIV API TECHNOLOGIES CORP- MAGNETICS (USA)

SPECIFICATIONS

body_width	0.828 INCHES MAXIMUM IN
body_height	1.195 INCHES MAXIMUM IN
body_length	1.105 INCHES MAXIMUM IN
inclosure_type	FULLY INCLOSED
mounting_method	FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating	400.0 HERTZ NOMINAL SINGLE COMPONENT
overall_diameter	0.724 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN
special_features	END ITM:COUNTERMEASURES SET ALQ-135B;MATL-BRASS PER QQ-B-626;FINISH SILVER PER QQ-S-365 TYII;0.460 IN. NOM LG;POLARIZATION POSITIONS 120.0 DEG AND 192.0 DEG IN
reliability_indicator	NOT ESTABLISHED
mounting_hole_diameter	0.062 INCHES NOMINAL SINGLE GROUP IN
mounting_facility_quantity	4 SINGLE GROUP
terminal_type_and_quantity	6 SLOTTED LUG
NSN	5950-00-105-9598

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP

•

INCLOSURE TYPE: FULLY INCLOSED

•

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

•

MOUNTING METHOD: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP

•

BODY WIDTH: 0.828 INCHES MAXIMUM IN

•

BODY HEIGHT: 1.195 INCHES MAXIMUM IN

•

MOUNTING HOLE DIAMETER: 0.062 INCHES NOMINAL SINGLE GROUP IN

•

DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 0.522 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN

TECHNICAL CHARACTERISTICS

MOUNTING FACILITY QUANTITY	4 SINGLE GROUP
INCLOSURE TYPE	FULLY INCLOSED
INPUT-OUTPUT PHASE RELATIONSHIP	SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
MOUNTING METHOD	FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
BODY WIDTH	0.828 INCHES MAXIMUM IN
BODY HEIGHT	1.195 INCHES MAXIMUM IN
MOUNTING HOLE DIAMETER	0.062 INCHES NOMINAL SINGLE GROUP IN
DISTANCE BETWEEN MOUNTING FACILITY CENTERS	0.522 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
BODY LENGTH	1.105 INCHES MAXIMUM IN
RELIABILITY INDICATOR	NOT ESTABLISHED

SUBSTITUTES & CROSS-REFERENCES 1

68400240701Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is K-3978?

K-3978 is a POLARIZING KEY,ELECTRICAL CONNEC.

What parts can replace K-3978?

There is 1 known substitute for K-3978: 68400240701. Substitute compatibility should be verified for your specific system.

What is the NSN for K-3978?

K-3978 is cataloged in the U.S. Government catalog under NSN 5950-00-105-9598. This indicates validated use in U.S. government and defense supply chains.

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K-3978 — POLARIZING KEY,ELECTRICAL CONNEC

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