Best Inch Mechanical Spur Gears in 2026

Daisy
Last Updated: Jul 19, 2026

At a Glance: Our Top Picks for Inch Mechanical Spur Gears

Boston Gear NB24B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 16 Pitch, 0.500" Bore, 1.625" OD, 0.500" Face Width, 24 Teeth
#TOP1
Boston Gear Nb24B Spur Gear, 14.5 Pressure Angle,
5.4
PM SCORE
Boston Gear NA16B-3/8 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 20 Pitch, 0.375" Bore, 0.900" OD, 0.375" Face Width, 16 Teeth
#TOP2
Boston Gear Na16B-3/8 Spur Gear, 14.5 Pressure Angle,
5.2
PM SCORE
Boston Gear NH18B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 8 Pitch, 0.875" Bore, 2.500" OD, 1.250" Face Width, 18 Teeth
#TOP3
Boston Gear Nh18B Spur Gear, 14.5 Pressure Angle,
5.1
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Inch Mechanical Spur Gears of 2026

Boston Gear Nb24B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 16 Pitch, 0.500" Bore, 1.625" Od, 0.500" Face Width, 24 Teeth

BOSTON GEAR
NB24B
0.35 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HF Alliance⭐ 9.53

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 16 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP2

Boston Gear Na16B-3/8 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 20 Pitch, 0.375" Bore, 0.900" Od, 0.375" Face Width, 16 Teeth

BOSTON GEAR
NA16B-3/8
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KHC Shop 9.57

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 20 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP3

Boston Gear Nh18B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 8 Pitch, 0.875" Bore, 2.500" Od, 1.250" Face Width, 18 Teeth

BOSTON GEAR
NH18B
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SIM Supply, Inc. 9.81

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP4

Boston Gear Nd12B-1/2 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 12 Pitch, 0.500" Bore, 1.167" Od, 0.750" Face Width, 12 Teeth

BOSTON GEAR
ND12B-1/2
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KHC Shop 9.57

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP5

Boston Gear Nh14B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 8 Pitch, 0.750" Bore, 2.000" Od, 1.250" Face Width, 14 Teeth

BOSTON GEAR
NH14B
2.85 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SIM Supply, Inc. 9.81

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

Boston Gear H3240 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 32 Pitch, 0.375" Bore, 1.312" Od, 0.188" Face Width, 40 Teeth

BOSTON GEAR
H3240
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KHC Shop 9.55

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 32 for applications where controlling changes in speed and direction of rotation with precision is more important than transferring torque

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

Boston Gear Nd12B Spur Gear, 14.5 Pressure Angle, Steel, Inch, 12 Pitch, 0.500" Bore, 1.167" Od, 0.750" Face Width, 12 Teeth

BOSTON GEAR
ND12B
3.00 X 2.00 X 2.00 Inches
0.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Moofin 9.88

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP8

Boston Gear Nd32A Spur Gear, 14.5 Pressure Angle, Steel, Inch, 12 Pitch, 0.625" Bore, 2.834" Od, 0.750" Face Width, 32 Teeth

BOSTON GEAR
ND32A
1.70 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 12 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP9

Boston Gear H2415 Spur Gear, 14.5 Pressure Angle, Steel, Inch, 24 Pitch, 0.250" Bore, 0.708" Od, 0.250" Face Width, 15 Teeth

BOSTON GEAR
H2415
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
KHC Shop 9.57

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 14.5 degrees for a higher contact ratio between gears, resulting in quieter operation than larger pressure angles

Diametral pitch of 24 for applications where controlling changes in speed and direction of rotation with precision is more important than transferring torque

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP10

Boston Gear Yb205/8 Spur Gear, Steel, Inch, 16 Pitch, 0.625" Bore, 1.375" Od, 0.750" Face Width, 20 Teeth

BOSTON GEAR
YB205/8
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
E.B. ATMUS 5.13

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles

Diametral pitch of 16 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

#TOP11

Boston Gear Yh24 Spur Gear, Steel, Inch, 8 Pitch, 0.875" Bore, 3.250" Od, 1.500" Face Width, 24 Teeth

BOSTON GEAR
YH24
11.00 X 9.00 X 6.00 Inches
3.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
E.B. ATMUS 6.86

Features

Transmits torque between parallel shafts to provide rotational power to another part of a motorized system

Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles

Diametral pitch of 8 for applications where transferring torque is more important than controlling changes in speed and direction of rotation with precision

Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion

Top 10 mechanical spur gears Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Boston Gear 11

Top 10 mechanical spur gears Brands Pie Chart


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