645-6105 — Technical Data Sheet

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— · COMPONENT

WHAT YOU NEED TO KNOW

Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel

Confirm exact part number — similar PNs may be different parts

PRODUCT OVERVIEW

The RELAY ASSEMBLY is a the manufacturer industrial component. Key specifications include relay_type: ELECTROMAGNETIC, overall_width: 1.312 INCHES NOMINAL IN, overall_height: 1.359 INCHES NOMINAL IN, overall_length: 6.420 INCHES NOMINAL IN, mounting_facility: BRACKET(S), controlling_agency: NORTHROP CORPORATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5945-00-731-1712, 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

645-6105

NSN: 5945-00-731-1712
FSC: 5945
CAGE: 62143 — NORTHERN TELECOM INC TELECOM DISTRIBUTION DIV (USA)

SPECIFICATIONS

relay_type	ELECTROMAGNETIC
overall_width	1.312 INCHES NOMINAL IN
overall_height	1.359 INCHES NOMINAL IN
overall_length	6.420 INCHES NOMINAL IN
mounting_facility	BRACKET(S)
controlling_agency	NORTHROP CORPORATION
identifying_number	21089-1 DRAWING NO.
mounting_configuration	THREADED HOLE MOUNTED
individual_relay_quantity	2
NSN	5945-00-731-1712

COMPONENT DIAGRAM

KEY FEATURES

•

INDIVIDUAL RELAY QUANTITY: 2

•

CONTROLLING AGENCY: NORTHROP CORPORATION

•

MOUNTING CONFIGURATION: THREADED HOLE MOUNTED

•

RELAY TYPE: ELECTROMAGNETIC

•

IDENTIFYING NUMBER: 21089-1 DRAWING NO.

TECHNICAL CHARACTERISTICS

OVERALL LENGTH	6.420 INCHES NOMINAL IN
INDIVIDUAL RELAY QUANTITY	2
CONTROLLING AGENCY	NORTHROP CORPORATION
OVERALL HEIGHT	1.359 INCHES NOMINAL IN
OVERALL WIDTH	1.312 INCHES NOMINAL IN
MOUNTING CONFIGURATION	THREADED HOLE MOUNTED
RELAY TYPE	ELECTROMAGNETIC
IDENTIFYING NUMBER	21089-1 DRAWING NO.
MOUNTING FACILITY	BRACKET(S)

VERIFIED SUBSTITUTES & CROSS-REFERENCES 4

21089-1InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

187802InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

MODEL 56-645-0InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

R31877PC6InterchangeableGOVERNMENT REGISTRY

Same NIIN cross-reference

interchangeable

LIFECYCLE

StatusACTIVEGOVERNMENT REGISTRY

AvailabilityOEM and secondary market

RoHS CompliantEAR99Not HAZMAT

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FREQUENTLY ASKED QUESTIONS

What is 645-6105?

645-6105 is a RELAY ASSEMBLY.

What parts can replace 645-6105?

There are 4 known substitutes for 645-6105: 21089-1, 187802, MODEL 56-645-0 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 645-6105?

645-6105 is cataloged in the Federal Logistics Information System under NSN 5945-00-731-1712. This indicates validated use in U.S. government and defense supply chains.

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645-6105 — Technical Data Sheet

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