CB4

View detailed technical data, stock status, and sourcing information for: CB4
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Federal Supply Group

Mechanical Power Transmission Equipment

Federal Supply Classification

3040 Miscellaneous Power Transmission Equipment

National Stock Number

3040-00-700-7145

Item Name Code

27781

Assigment Date

01/01/1963 (63 years ago)

0.375 inches nominal overall width, 0.245 inches minimum and 0.250 inches maximum thickness, 0.812 inches nominal overall length, 0.2510 inches minimum and 0.2520 inches maximum bore diameter, 0.1560 inches nominal plain hole diameter

Product Characteristics

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

Overall Length: 0.812 inches nominal
Overall Width: 0.375 inches nominal
Thickness: 0.245 inches minimum and 0.250 inches maximum
Bore Diameter: 0.2510 inches minimum and 0.2520 inches maximum
Plain Hole Diameter: 0.1560 inches nominal
Distance From Bore Centerline To End: 0.375 inches nominal
Clamp Securing Hole Style: threaded
Screw Thread Series Designator: unc
Nominal Thread Size: 0.138 inches
Material: steel comp 1018
Material Document And Classification: fed std 66 fed std single material response or aisi 1018 assn std single material response or sae 1018 assn std single material response
Surface Treatment: cadmium
Style Designator: rectangular, single bolt secured
Furnished Items And Quantity: 1 socket head cap screw

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3040-00-931-2526	No Name Available	09/23/1970

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
1768922	Hub Clamp
1768922-1REVB	Hub Clamp
1768922-1REVC	Hub Clamp
CB4	Hub Clamp
CG3-10	Hub Clamp
CG62	Hub Clamp
SR8172	Hub Clamp

FAQs

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

What is the FSCG of the NSN 3040-00-700-7145?

The FSCG of the NSN 3040-00-700-7145 is 3040

Does NSN 3040-00-700-7145 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 3040-00-700-7145 contain precious materials?

Precious metal content is unknown

Does NSN 3040-00-700-7145 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 3040-00-700-7145 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963