B21520 — B21520

✓ Government record, cited

— · MRO · MRO_GENERAL

PRODUCT OVERVIEW

B21520: B21520.

The B21520 is a the manufacturer industrial component. Key specifications include length: 0.630 INCHES MAXIMUM IN, diameter: 0.593 INCHES NOMINAL IN, contact_type: WIRE LEAD, current_type: DC, dc_voltage_rating: 22.0 VOLTS MINIMUM AND 31.0 VOLTS MAXIMUM, features_provided: COIL AND MOUNTING HARDWARE. This part is cataloged in the U.S.

Government catalog under NSN 6625-00-491-3772, 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→ B21520

NSN: 6625-00-491-3772
FSC: 6625 — Electrical and Electronic Properties Measuring and Testing Instruments
CAGE: 82227 — VDO CONTROL SYSTEMS INC (USA)

SPECIFICATIONS

length	0.630 INCHES MAXIMUM IN
diameter	0.593 INCHES NOMINAL IN
contact_type	WIRE LEAD
current_type	DC
contact_quantity	4
dc_voltage_rating	22.0 VOLTS MINIMUM AND 31.0 VOLTS MAXIMUM
features_provided	COIL AND MOUNTING HARDWARE
presentation_type	WINDOW
coil_dc_resistance	688.0 OHMS MINIMUM
electrical_connection_quantity	4
mounting_facility_type_and_quantity	1 THREADED CASE
NSN	6625-00-491-3772

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY TYPE AND QUANTITY: 1 THREADED CASE

•

COIL DC RESISTANCE: 688.0 OHMS MINIMUM

•

CONTACT TYPE: WIRE LEAD

•

LENGTH: 0.630 INCHES MAXIMUM IN

•

CURRENT TYPE: DC

•

ELECTRICAL CONNECTION QUANTITY: 4

•

DC VOLTAGE RATING: 22.0 VOLTS MINIMUM AND 31.0 VOLTS MAXIMUM

•

DIAMETER: 0.593 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

MOUNTING FACILITY TYPE AND QUANTITY	1 THREADED CASE
COIL DC RESISTANCE	688.0 OHMS MINIMUM
CONTACT TYPE	WIRE LEAD
LENGTH	0.630 INCHES MAXIMUM IN
CURRENT TYPE	DC
ELECTRICAL CONNECTION QUANTITY	4
DC VOLTAGE RATING	22.0 VOLTS MINIMUM AND 31.0 VOLTS MAXIMUM
DIAMETER	0.593 INCHES NOMINAL IN
CONTACT QUANTITY	4
FEATURES PROVIDED	COIL AND MOUNTING HARDWARE

SUBSTITUTES & CROSS-REFERENCES 5

B21646Reference document

Same NSN cross-reference

Reference document — Secondary reference

6625PL0217469Reference document

Same NSN cross-reference

Reference document — Informative reference only

MI57D-28-W/BLK-S493Reference document

Same NSN cross-reference

Reference document — Secondary reference

MI57DA-28-W/BLK-S493ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

MI57DA-28-W/BLK-S493Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 B21520?

B21520 is a B21520. It is classified as a MRO (MRO_GENERAL).

What parts can replace B21520?

There are 5 known substitutes for B21520: B21646, 6625PL0217469, MI57D-28-W/BLK-S493 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for B21520?

B21520 is cataloged in the U.S. Government catalog under NSN 6625-00-491-3772. This indicates validated use in U.S. government and defense supply chains.

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