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Round Base Features

Adams round base magnet assemblies are made with either ceramic or neodymium magnets combined with steel cups. The magnets are magnetized together with the casings to create a holding force that is significantly stronger than an individual magnet. We can easily attach hooks, knobs, PEMs or other fasteners to accommodate your specific holding requirements. We coat all our round base magnets with nickel or chrome unless otherwise specified, and can also provide custom coatings to meet your environmental requirements.

Common applications

  • Antenna mounts 
  • Tow light kits
  • Work lamp bases
  • Emergency light holders 
  • Vehicles flag holders 
  • Sign and banner holders

 

Holding and pull strength

Round base assemblies are up to 32 times stronger than ceramic magnets by themselves. Pull strength is tested on a flat steel plate 1/2 inch thick. The pull may vary depending on the surface it is attracted to, for example if the steel is less than 1/2 inch thick, coated, rough or rusty. We recommend that you obtain a sample to test and confirm the actual pull / holding capability when used in your application.

Colors, packaging

Adams can produce round magnet assemblies in just about any color. We can package them in individual bags or other the packaging types you specify.

Design and handling considerations

Most of our round magnetic assemblies are made with ceramic or neodymium magnets, which are brittle and may break if dropped or if riveting is used in their application. Please use caution when handling channel magnets assemblies, their exceptional magnetic force may cause them to attract to metal (or to each other) so strongly that putting fingers in their path could prove painful.

Product Specifications


Adams supplies the following round base magnet assemblies from stock, with dimensions listed in inches. We can also make custom base assemblies to meet your exact specifications. To make ordering your magnets easier, just select the right size on the charts below, note the item number and contact us to place your order. Call us at 800- 747-7543 if you don't see what you're looking for in this brief listing.

The Original Round Bases

Pull LBS OD CH MH T Stock# Item# View Print
210 4.9 0.5 1.75 0.5 RB-90 64J0001
120 3.79 0.38 1.28 0.5 RB-85 64I0007
110 3.2 0.28 1.25 0.415 RB-80 64H0004
85 2.875 0.27 1 0.365 RB-75 64G0001
80 2.625 0.28 1 0.375 RB-70 64F0002
50 2.375 0.27 0.8 0.35 RB-60 64E0001
40 2.03 0.192 0.844 0.344 RB-51 64D0005
35 2.03 0.192 0.844 0.313 RB-50 64C0022
15 1.4 0.192 0.375 0.260 RB-40 64B0006
11 1.205 0.156 0.25 0.188 RB-20 64A0004
5 1.205 0.125 0.187 0.188 RB-20 64A0001

Round Bases with Hooks

Pull LBS OD T Item # Nickel Item # White View Print
9 0.984 0.275 64PN0025 64PW0025
18 1.25 0.275 64PN0032 64PW0032
28 1.58 0.315 64PN0040 64PW0040
49 1.97 0.394 64PN0050 64PW0050
78 2.48 0.551 64PN0063 64PW0063

 

Round Base with PEM Nut

Pull LBS OD T Item # Nickel Item # White View Print
9 0.984 0.275 64PNN025 64PWN025
18 1.25 0.275 64PNN032 64PWN032
28 1.58 0.315 64PNN040 64PWN040
49 1.97 0.394 64PNN050 64PWN050
78 2.48 0.551 64PNN063 64PWN063

Neo Round Bases: Nickel Coated with Protective Covers

Pull LBS OD CH T Stock Item# View Print
40 1.205 0.125 0.188 RB-20 64ANC12
65 1.4 0.187 0.281 RB-40 64BNC06
90 2.03 0.193 0.299 RB-50 64CNC05
110 2.375 0.27 0.35 RB-60 64ENC01
140 2.625 0.28 0.375 RB-70 64FNC02
195 3.2 0.28 0.438 RB-80 64HNC04
300 4.9 0.5 0.5 RB-90 64JNC09

Neo Round Bases: Rubber Coated

Pull LBS OD  Cup HT  Assembly HT  Assembly Type  Thread  Item#  View Print
20 1.677 0.237 1.22 Male Stud  1/4-20 64RBM045 
32 2.574 0.312 1.312 Male Stud  1/4-20 64RBM070 
105 3.471 0.326 1.425 Male Stud  1/4-20 64RBM080 
20 1.677 0.237 0.237 Female Standoff  M4  64RBF045 
32 2.574 0.312 0.312 Female Standoff  M5  64RBF070 
105 3.471 0.326 0.326 Female Standoff  M6  64RBF080

 


Neo Round Bases: Miniature Sizes

Pull LBS OD  Cup HT Assembly HT Assembly Type  Thread  Item#  View Print
12 0.625 0.196 0.511 Male Stud  M4  64AN000 
48 0.977 0.314 0.664 Male Stud  M6  64AN001 
12 0.625 0.196 0.508 Female Stud  M4  64AN016 
48 0.977 0.314 0.550 Female Stud  M5  64AN025 
12 0.625 0.196 0.511 Threaded Hook  M4  64ANH16 
48 0.977 0.314 0.665 Threaded Hook  M4  64ANH25 

Pull LBS OD  CH MH Cup HT Assembly Type  Item#  View Print
9 0.625 0.138 n/a 0.196 Counter Sunk Hole  64ANC16 
55 1.249 0.215 n/a 0.313 Counter Sunk Hole  64ANC32 
13 0.781 0.176 0.315 0.274 Counter Bore Hole  64ANC20 
30 0.977 0.216 0.354 0.314 Counter Bore Hole  64ANC25