Page 74 - ZSi-Foster Product Catalog

Channel Nuts

Standard Finish: Electro Galvanized (EG)

Slip And Pull-Out Load Data

Resistance To Slip Resistance To
Channel Channel (Lbs./Bolt) Pull-Out (Lbs./Bolt)
Part No. Nut Safety Factor 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
Apply Proper Torque W500 W5-8 1,000 600 1,400 840

A Channel Nut installed within the last inch of Channel
(center of bolt to extreme end of Channel) cannot develop
full capacity. Design Bolt Torque
REDUCE ULTIMATE DESIGN LOAD BY 50%. Bolt Foot
Size Pounds
When installing a Channel Nut near the end of a Channel section, 1 ⁄4" - 20 6
especially within the last inch, remember to true the legs forming 5 ⁄16" - 18 11
the continuous Channel slot before inserting and tightening the 3 ⁄8" - 16 19
Channel Nut. 1 ⁄2" - 13 50
Channel Nuts or their matching threaded fastener that may have 5 ⁄8" - 11 100
been contaminated with oil, wax, petroleum products or any friction 3 ⁄4" - 10 125
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 A B
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.

– 74 – www.zsi-foster.com
WARNING: Cancer and Reproductive Harm Warning. For more information go to www.P65Warnings.ca.gov.