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Technical Data Sheet
B21546 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN COUNTERBORE FIRST END, tooth_form: STANDARD, pitch_diameter: 0.5000 INCHES NOMINAL IN, pressure_angle: 14.5000 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-337-1250, 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
B21546
NSN: 3020-00-337-1250
FSC: 3020
CAGE: 92208 — LITTON SYSTEMS INC ITEK OPTICAL SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN COUNTERBORE FIRST END
tooth_formSTANDARD
pitch_diameter0.5000 INCHES NOMINAL IN
pressure_angle14.5000 DEGREES
teeth_quantity16
style_designatorPROTRUDING HUB
face_nominal_width0.500 INCHES IN
hub_nominal_diameter0.5770 INCHES FIRST END IN
hub_style_designatorPINNED FIRST END
bore_nominal_diameter0.1865 INCHES COUNTERBORE FIRST END IN
NSN3020-00-337-1250
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN B21546 MFR GEAR,SPUR
KEY FEATURES
MATERIAL: STEEL OVERALL
BORE NOMINAL DIAMETER: 0.1865 INCHES COUNTERBORE FIRST END IN
STYLE DESIGNATOR: PROTRUDING HUB
HUB NOMINAL DIAMETER: 0.5770 INCHES FIRST END IN
TEETH QUANTITY: 16
PITCH DIAMETER: 0.5000 INCHES NOMINAL IN
BORE STYLE: PLAIN COUNTERBORE FIRST END
PRESSURE ANGLE: 14.5000 DEGREES
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
BORE NOMINAL DIAMETER0.1865 INCHES COUNTERBORE FIRST END IN
STYLE DESIGNATORPROTRUDING HUB
HUB NOMINAL DIAMETER0.5770 INCHES FIRST END IN
TEETH QUANTITY16
PITCH DIAMETER0.5000 INCHES NOMINAL IN
BORE STYLEPLAIN COUNTERBORE FIRST END
PRESSURE ANGLE14.5000 DEGREES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.5620 INCHES FIRST END IN
BODY STYLEPLAIN, SOLID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
SN5733-1PCX356Interchangeable
interchangeable cross-reference
interchangeable
5970-1Interchangeable
interchangeable cross-reference
interchangeable
SN5733PCX356Interchangeable
interchangeable cross-reference
interchangeable
R11738Interchangeable
interchangeable cross-reference
interchangeable
11738Interchangeable
interchangeable cross-reference
interchangeable
32-87803-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B21546?
B21546 is a GEAR,SPUR.
What parts can replace B21546?
There are 8 known substitutes for B21546: SN5733-1PCX356, 5970-1, SN5733PCX356 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B21546?
B21546 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-337-1250. This indicates validated use in U.S. government and defense supply chains.
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