B21-00563 — GEAR,INTERNAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B21-00563: GEAR,INTERNAL.

The GEAR,INTERNAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, teeth_type: SPUR, pitch_diameter: 1.6250 INCHES NOMINAL IN, pressure_angle: 28.0000 DEGREES, teeth_quantity: 26. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-141-8874, 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

B21-00563

NSN: 3020-00-141-8874
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)

SPECIFICATIONS

material	STEEL OVERALL
body_style	PLAIN, SOLID
teeth_type	SPUR
pitch_diameter	1.6250 INCHES NOMINAL IN
pressure_angle	28.0000 DEGREES
teeth_quantity	26
style_designator	PLAIN RING
attachment_method	MOUNTING HOLE
features_provided	CASEHARDENED
nominal_overall_length	0.312 INCHES IN
nominal_outside_diameter	2.2483 INCHES IN
mounting_hole_type_and_quantity	2 THREADED AXIALLY THROUGH BODY FIRST END
NSN	3020-00-141-8874

COMPONENT DIAGRAM

KEY FEATURES

•

TEETH QUANTITY: 26

•

BODY STYLE: PLAIN, SOLID

•

MOUNTING HOLE TYPE AND QUANTITY: 2 THREADED AXIALLY THROUGH BODY FIRST END

•

TEETH TYPE: SPUR

•

NOMINAL OVERALL LENGTH: 0.312 INCHES IN

•

STYLE DESIGNATOR: PLAIN RING

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-869 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL

•

PITCH DIAMETER: 1.6250 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

TEETH QUANTITY	26
BODY STYLE	PLAIN, SOLID
MOUNTING HOLE TYPE AND QUANTITY	2 THREADED AXIALLY THROUGH BODY FIRST END
TEETH TYPE	SPUR
NOMINAL OVERALL LENGTH	0.312 INCHES IN
STYLE DESIGNATOR	PLAIN RING
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-869 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
PITCH DIAMETER	1.6250 INCHES NOMINAL IN
FEATURES PROVIDED	CASEHARDENED
MOUNTING HOLE NOMINAL THREAD SIZE	0.138 INCHES AXIALLY THROUGH BODY FIRST END IN

OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072

SUBSTITUTES & CROSS-REFERENCES 2

81125S41-29533PC37Reference document

Same NSN cross-reference

Reference document — Secondary reference

3245687Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B21-00563?

B21-00563 is a GEAR,INTERNAL.

What parts can replace B21-00563?

There are 2 known substitutes for B21-00563: 81125S41-29533PC37, 3245687. Substitute compatibility should be verified for your specific system.

What is the NSN for B21-00563?

B21-00563 is cataloged in the U.S. Government catalog under NSN 3020-00-141-8874. This indicates validated use in U.S. government and defense supply chains.

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