E21A84 — GEAR,SPUR

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

E21A84: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 1.7500 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-540-5847, 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

E21A84

NSN: 3020-00-540-5847
NIINs: 005405847, 007116052
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
tooth_form	STANDARD
pitch_diameter	1.7500 INCHES NOMINAL IN
pressure_angle	20.0000 DEGREES
teeth_quantity	84
style_designator	PROTRUDING HUB
attachment_method	MOUNTING HOLE
surface_treatment	ANODIZE OVERALL
face_nominal_width	0.125 INCHES IN
backlash_designation	GRADE C
NSN	3020-00-540-5847

COMPONENT DIAGRAM

KEY FEATURES

•

BORE NOMINAL DIAMETER: 0.188 INCHES BOTH ENDS IN

•

HUB NOMINAL DIAMETER: 0.375 INCHES FIRST END IN

•

TEETH QUANTITY: 84

•

BODY STYLE: PLAIN, SOLID

•

BORE STYLE: PLAIN BOTH ENDS

•

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

•

PRECISION CLASSIFICATION: QUALITY NUMBER 10 OR QUALITY NUMBER 11

•

STYLE DESIGNATOR: PROTRUDING HUB

TECHNICAL CHARACTERISTICS

BORE NOMINAL DIAMETER	0.188 INCHES BOTH ENDS IN
HUB NOMINAL DIAMETER	0.375 INCHES FIRST END IN
TEETH QUANTITY	84
BODY STYLE	PLAIN, SOLID
BORE STYLE	PLAIN BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.250 INCHES FIRST END IN
PRECISION CLASSIFICATION	QUALITY NUMBER 10 OR QUALITY NUMBER 11
STYLE DESIGNATOR	PROTRUDING HUB
PITCH DIAMETER	1.7500 INCHES NOMINAL IN
TOOTH FORM	STANDARD

SUBSTITUTES & CROSS-REFERENCES 5

G2-84Q10Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

G2-84Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

530040-2084Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

155-84Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

PG4426-84Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 E21A84?

E21A84 is a GEAR,SPUR.

What parts can replace E21A84?

There are 5 known substitutes for E21A84: G2-84Q10, G2-84, 530040-2084 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for E21A84?

E21A84 is cataloged in the U.S. Government catalog under NSN 3020-00-540-5847. This indicates validated use in U.S. government and defense supply chains.

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