Page 80 - ZSi-Foster-Engineering-Catalog
P. 80

Channel Nuts
Standard Finish: Electro Galvanized (EG)
           Slip And Pull-Out Load Data
   Channel Part No.
    Channel Nut
   Resistance To Slip (Lbs./Bolt) Safety Factor
 Resistance To Pull-Out (Lbs./Bolt) Safety Factor
 3
 5
  3
  5
  W200
 W2-8
 1,500
 900
  2,000
  1,200
  W210
 W2-8
 1,000
 600
  1,400
  840
  W300
  W2-8
  1,500
  900
   2,000
   1,200
  W500
   W5-8
 1,000
   600
  1,400
  840
    Apply Proper Torque
A Channel Nut installed within the last inch of Channel (center of bolt to extreme end of Channel) cannot develop full capacity.
REDUCE ULTIMATE DESIGN LOAD BY 50%.
When installing a Channel Nut near the end of a Channel section, especially within the last inch, remember to true the legs forming the continuous Channel slot before inserting and tightening the Channel Nut.
Channel Nuts or their matching threaded fastener that may have been contaminated with oil, wax, petroleum products or any friction reducing medium, will no longer develop a proper torque rating, and may be prone to loosening. To insure proper attachment load rating, properly clean and dry any such contaminated surfaces, paying specific attention to the threaded surfaces. If proper cleaning is not possible, replace the fasteners with uncontaminated stock.
Hanging a section of All Thread Rod directly from a Channel Nut within an overhead mounted section of Channel (without securing with a Fitting or Square Washer and a Hex or Jamb Nut) (Ref. A), does not allow the Channel Nut to function at its proper capacity and could result in the attachment slipping, twisting out or even jumping free of its confinement in a vibration situation. Always capture the Rod and Channel Nut at the face of the Channel as shown (Ref. B). Use proper torque value.
Bolt torque values are given to ensure the proper connection between components. It is important to understand that there is
a direct, but not necessarily consistent, relationship between bolt torque and tension in the bolt. Too much tension in the bolt can cause it to break or crush the component parts. Too little tension in the bolt can prevent the connection from developing its full load capacity The torque values given have been developed over many years of experience and testing
– 80 –
Design Bolt Torque
 Bolt Size
 Foot Pounds
   1⁄4" - 20
  6
   5⁄16" - 18
  11
  3⁄8" - 16
  19
   1⁄2" - 13
 50
   5⁄8" - 11
  100
   3⁄4" - 10
  125
     A
      B
         WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and which is known to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
www.zsi-foster.com
  



































   78   79   80   81   82