HH-40A — GEAR,HELICAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

HH-40A: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STANDARD, helix_angle: 45.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-442-0101, 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

HH-40A

NSN: 3020-00-442-0101
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2024 OVERALL
body_style	PLAIN, SOLID
bore_style	PLAIN BOTH ENDS
teeth_type	SINGLE HELIX
tooth_form	STANDARD
helix_angle	45.0000 DEGREES
pitch_diameter	1.1774 INCHES MINIMUM AND 1.1784 INCHES MAXIMUM IN
pressure_angle	20.0000 DEGREES
teeth_quantity	40
tooth_direction	RIGHT
style_designator	PROTRUDING HUB
surface_treatment	ANODIZE OVERALL
NSN	3020-00-442-0101

COMPONENT DIAGRAM

KEY FEATURES

•

BORE NOMINAL DIAMETER: 0.250 INCHES BOTH ENDS IN

•

HELIX ANGLE: 45.0000 DEGREES

•

HUB NOMINAL DIAMETER: 0.500 INCHES FIRST END IN

•

TEETH QUANTITY: 40

•

BODY STYLE: PLAIN, SOLID

•

TOOTH DIRECTION: RIGHT

•

BORE STYLE: PLAIN BOTH ENDS

•

NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 0.250 INCHES FIRST END IN

TECHNICAL CHARACTERISTICS

BORE NOMINAL DIAMETER	0.250 INCHES BOTH ENDS IN
HELIX ANGLE	45.0000 DEGREES
HUB NOMINAL DIAMETER	0.500 INCHES FIRST END IN
TEETH QUANTITY	40
BODY STYLE	PLAIN, SOLID
TOOTH DIRECTION	RIGHT
BORE STYLE	PLAIN BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.250 INCHES FIRST END IN
TEETH TYPE	SINGLE HELIX
STYLE DESIGNATOR	PROTRUDING HUB

SUBSTITUTES & CROSS-REFERENCES 3

LKA-E3-40Reference document

Same NSN cross-reference

Reference document — Secondary reference

DAC2T40Reference document

Same NSN cross-reference

Reference document — Secondary reference

H48A28-R40Reference 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 HH-40A?

HH-40A is a GEAR,HELICAL.

What parts can replace HH-40A?

There are 3 known substitutes for HH-40A: LKA-E3-40, DAC2T40, H48A28-R40. Substitute compatibility should be verified for your specific system.

What is the NSN for HH-40A?

HH-40A is cataloged in the U.S. Government catalog under NSN 3020-00-442-0101. This indicates validated use in U.S. government and defense supply chains.

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