HKSB25-2

View detailed technical data, stock status, and sourcing information for: HKSB25-2
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3020 Gears, Pulleys, Sprockets and Transmission Chain

National Stock Number

3020-00-627-9745

Item Name Code

04456

Assigment Date

03/12/1975 (51 years ago)

1.120 inches nominal counterbore diameter, 1.000 inches nominal overall length, 0.137 inches minimum and 0.147 inches maximum counterbore depth, counterbore furnished items, 4.258 inches nominal outside diameter

Product Characteristics

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

Counterbore Diameter: 1.120 inches nominal
Counterbore Depth: 0.137 inches minimum and 0.147 inches maximum
Furnished Items: counterbore
Outside Diameter: 4.258 inches nominal
Overall Length: 1.000 inches nominal
Bore Diameter: 0.751 inches minimum and 0.752 inches maximum
Bore Length: 1.000 inches nominal
Pitch Diameter: 3.989 inches nominal
Hub Outside Diameter: 2.500 inches nominal aa end
Face Width: 0.284 inches nominal
Design Form: plain
Bore Type: straight
Distance From Hub End To Flange End: 0.716 inches nominal aa end
Counterbore Location: bb end
Securing Method: press fit
Protruding Hub Characteristic: plain
Securing Location: both ends
Teeth Row Quantity: 1
Teeth Quantity Per Row: 25
Asa Standard Chain Number: 40
Hardness Rating Test Method: not rated
Tooth Pitch: 0.500 inches nominal
Material: steel
Surface Treatment: zinc
Style Designator: plain

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
CB57-42472-1	Sprocket Wheel
HKSB25-2	Sprocket Wheel

FAQs

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

What is the FSCG of the NSN 3020-00-627-9745?

The FSCG of the NSN 3020-00-627-9745 is 3020

Does the NSN 3020-00-627-9745 have a Schedule B code assigned?

Yes, the Schedule B code is 8483901000

Does NSN 3020-00-627-9745 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 3020-00-627-9745 contain precious materials?

Precious metal content is unknown

Does NSN 3020-00-627-9745 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 3020-00-627-9745 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Wed, Mar 12, 1975