75188B

View detailed technical data, stock status, and sourcing information for: 75188B
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-517-3109

Item Name Code

05466

Assigment Date

01/01/1961 (65 years ago)

A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.

20 teeth quantity, 1.6660 inches nominal pitch diameter, plain, solid body style, 35.0 rockwell c minimum and 38.0 rockwell c maximum overall hardness rating, w/ keyway both ends bore style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: plain, solid
Pitch Diameter: 1.6660 inches nominal
Teeth Quantity: 20
Bore Style: w/ keyway both ends
Hardness Rating: 35.0 rockwell c minimum and 38.0 rockwell c maximum overall
Nominal Outside Diameter: 1.830 inches
Tooth Form: standard
Pressure Angle: 20.0000 degrees
Nominal Distance Between Body Face And Protruding Hub End: 0.2187 inches second end
Nominal Distance Between Body Face And Protruding Hub End: 0.2812 inches first end
Face Nominal Width: 0.562 inches
Bore Nominal Diameter: 0.669 inches both ends
Keyway Nominal Width: 0.187 inches both ends
Nominal Distance From Bore Center To Keyway Bottom: 0.4255 inches both ends
Hub Style Designator: 1 step first end
Hub Style Designator: plain second end
Hub Nominal Diameter: 1.000 inches second end
End Nominal Length: 0.1572 inches first end
End Nominal Diameter: 1.000 inches first end
First Step Nominal Length: 0.125 inches first end
First Step Nominal Diameter: 1.4375 inches first end
Special Features: 2 holes drilled 0.2031 in dia by 0.500 in deep,0.2656 in dia counterbore by 0.062 in deep,1/4-20 intap by 0.375 in deep,180 deg apart,90 deg from keyway
Material: steel comp 3135 overall
Material Document And Classification: fed-std-66 fed std single material response overall
Style Designator: protruding hubs

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3020-00-364-7083	No Name Available	01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
75188B	Spur Gear

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 3020-00-517-3109?

The FSCG of the NSN 3020-00-517-3109 is 3020

Does the NSN 3020-00-517-3109 have a Schedule B code assigned?

Yes, the Schedule B code is 8483409000

Does NSN 3020-00-517-3109 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 3020-00-517-3109 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-517-3109 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 3020-00-517-3109 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961