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181947-1 — GEAR,INTERNAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

181947-1: GEAR,INTERNAL.

The GEAR,INTERNAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_style: W/COUNTERBORE BOTH ENDS, teeth_type: SPUR, tooth_form: STANDARD, pitch_diameter: 2.1250 INCHES NOMINAL IN, pressure_angle: 25.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-128-1688, 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
181947-1
NSN: 3020-01-128-1688
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 71791 — CURTISS-WRIGHT CONTROLS, INC. DBA CURTISS WRIGHT DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_styleW/COUNTERBORE BOTH ENDS
teeth_typeSPUR
tooth_formSTANDARD
pitch_diameter2.1250 INCHES NOMINAL IN
pressure_angle25.0000 DEGREES
teeth_quantity54
face_nominal_width0.741 INCHES IN
hub_spline_quantity101 FIRST END
hub_style_designatorEXTERNALLY SPLINED, INVOLUTE SPLINES FIRST END
nominal_overall_length1.260 INCHES IN
nominal_outside_diameter2.517 INCHES IN
NSN3020-01-128-1688
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,INTERNAL TITLE COMPONENT PN 181947-1 MFR GEAR,INTERNAL
KEY FEATURES
•
HUB SPLINE QUANTITY: 101 FIRST END
•
TEETH QUANTITY: 54
•
COUNTERBORE NOMINAL DIAMETER: 2.370 INCHES BOTH ENDS IN
•
BORE STYLE: W/COUNTERBORE BOTH ENDS
•
TEETH TYPE: SPUR
•
NOMINAL OVERALL LENGTH: 1.260 INCHES IN
•
PITCH DIAMETER: 2.1250 INCHES NOMINAL IN
•
TOOTH FORM: STANDARD
TECHNICAL CHARACTERISTICS
HUB SPLINE QUANTITY101 FIRST END
TEETH QUANTITY54
COUNTERBORE NOMINAL DIAMETER2.370 INCHES BOTH ENDS IN
BORE STYLEW/COUNTERBORE BOTH ENDS
TEETH TYPESPUR
NOMINAL OVERALL LENGTH1.260 INCHES IN
PITCH DIAMETER2.1250 INCHES NOMINAL IN
TOOTH FORMSTANDARD
HUB STYLE DESIGNATOREXTERNALLY SPLINED, INVOLUTE SPLINES FIRST END
NOMINAL OUTSIDE DIAMETER2.517 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 2
10106670Reference document
Same NSN cross-reference
Reference document — Informative reference only
181947Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 181947-1?
181947-1 is a GEAR,INTERNAL.
What parts can replace 181947-1?
There are 2 known substitutes for 181947-1: 10106670, 181947. Substitute compatibility should be verified for your specific system.
What is the NSN for 181947-1?
181947-1 is cataloged in the U.S. Government catalog under NSN 3020-01-128-1688. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.