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  • Body - Low carbon steel, protective coated for corrosion resistance.
  • Ball - Alloy steel, heat treated, hard chrome plated.
  • Stud - Low carbon steel, protective coated for corrosion resistance.Right hand threads are standard.
  • Grease Fitting available for sizes -6 and up. Units are supplied without grease fittings. When a grease fitting is required, specify by adding suffix "Z" or "F". Ex.: CM-6SZ = Zerk Type Fitting CM-6SF = Flush Type Fitting.
  • Optional grease fitting is supplied, standard, in right hand location as illustrated (with stud facing you). Specify if left hand location is desired.
Unit of Measure


Thread Type

N/A Right Hand

Thread Configuration

N/A Male

W - Ball Width

N/A .500 in

H - Head Width

N/A .359 in

A - Base to Center

N/A 1.938 in

D - Head Diameter

N/A 1.000 in

Ball Diameter

N/A .719 in

C - Thread Length

N/A 1.250 in

L - Center to End of Stud

N/A 1.562 in

N - Stud Shank Length

N/A .906 in

M - Stud Thread Length

N/A .812 in

Thread Size

N/A 3/8-24

Thread Class


Thread Class Stud


Hex Stud

N/A .500 in

a - Misalignment Angle Total

N/A 45 º

Ultimate Radial Static Load Capacity

N/A 1,014 lbs

Approximate Brg. Weight

N/A .15 lb

Lubrication Options

N/A Zerk Fitting or Flush Fitting

Grease Fitting Location

N/A Right Hand or Left Hand

CM-S & CB-S Note

CM-S & CB-S Note

N/A For dimensional tolerances of listed features, see the PDF version of the catalog under the "View Product Catalogs" tab from the home page.