450521-4 — GEAR,SPUR

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

450521-4: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLID, tooth_form: STANDARD, pitch_diameter: 0.8427 INCHES MINIMUM AND 0.8437 INCHES MAXIMUM IN, pressure_angle: 20.0000 DEGREES, teeth_quantity: 54. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-022-1563, 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

450521-4

NSN: 3020-01-022-1563
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 80249 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2024 OVERALL
body_style	PLAIN, SOLID
tooth_form	STANDARD
pitch_diameter	0.8427 INCHES MINIMUM AND 0.8437 INCHES MAXIMUM IN
pressure_angle	20.0000 DEGREES
teeth_quantity	54
style_designator	PROTRUDING HUB
attachment_method	CLAMP
face_nominal_width	0.125 INCHES IN
hub_nominal_diameter	0.188 INCHES FIRST END IN
bore_nominal_diameter	0.125 INCHES BOTH ENDS IN
nominal_overall_length	0.395 INCHES IN
NSN	3020-01-022-1563

COMPONENT DIAGRAM

KEY FEATURES

•

BORE NOMINAL DIAMETER: 0.125 INCHES BOTH ENDS IN

•

HUB NOMINAL DIAMETER: 0.188 INCHES FIRST END IN

•

TEETH QUANTITY: 54

•

CLAMPING SURFACE NOMINAL LENGTH: 0.188 INCHES FIRST END IN

•

BODY STYLE: PLAIN, SOLID

•

NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 0.270 INCHES FIRST END IN

•

PRECISION CLASSIFICATION: QUALITY NUMBER 5 OR QUALITY NUMBER 6

•

NOMINAL OVERALL LENGTH: 0.395 INCHES IN

TECHNICAL CHARACTERISTICS

BORE NOMINAL DIAMETER	0.125 INCHES BOTH ENDS IN
HUB NOMINAL DIAMETER	0.188 INCHES FIRST END IN
TEETH QUANTITY	54
CLAMPING SURFACE NOMINAL LENGTH	0.188 INCHES FIRST END IN
BODY STYLE	PLAIN, SOLID
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.270 INCHES FIRST END IN
PRECISION CLASSIFICATION	QUALITY NUMBER 5 OR QUALITY NUMBER 6
NOMINAL OVERALL LENGTH	0.395 INCHES IN
STYLE DESIGNATOR	PROTRUDING HUB
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

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 1

6454CT20-1/8Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)

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FREQUENTLY ASKED QUESTIONS

What is 450521-4?

450521-4 is a GEAR,SPUR.

What parts can replace 450521-4?

There is 1 known substitute for 450521-4: 6454CT20-1/8. Substitute compatibility should be verified for your specific system.

What is the NSN for 450521-4?

450521-4 is cataloged in the U.S. Government catalog under NSN 3020-01-022-1563. This indicates validated use in U.S. government and defense supply chains.

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450521-4 — GEAR,SPUR

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