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Channel Nut with Standard Spring
Description
Channel nuts with standard springs made from galvanized spring steel wire. Channel nuts are formed or stamped from steel bar stock. They are case hardened after all forming and taping operations have been completed. The nuts are coated with zinc to ASTM-B633 "Electrodeposited Coatings of Zinc on Iron and Steel." Channel nuts have uniform and American coarse screw threads. Channel nuts are available with a variety of spring types and sizes.
Features
General
Fittings are manufactured by cold forming steel in punch press dies and conform to those tolerances listed in section 5.3 of Metal Framing Standards Publication No. MFMA-4.
MaterialSteel used for fittings is Hot-Rolled Pickled and Oiled strip steel or bar conforming to ASTM A 570 or ASTM A575. The bar steel used in manufacture of channel nuts conforms to ASTM A575 or ASTM A576.
WeldingFittings having two or more component parts may be arc or resistance welded in accordance with the appropriate American Welding Society Standards.
Dimensional Image
Installation
1 Insert the appropriate Channel Nut with spring, parallel to the slot edges, anywhere along the continuous open slot of the channel. |
2 Depress the Channel Nut with spring below the in-turned channel edges. Rotate one quarter turn clock-wise, perpendicular, and release pressure on the nut. The Nut will lock in-place, its pyramid grip enhanced grooves aligning with the underside of the channel's in-turned edges; the spring being designed to hold the nut in place during assembly. |
3 Fitting, bracket, or accessory, is located on the channel face over the Channel Nut with spring. An appropriate diameter and length of bolt is inserted, and the fitting is adjusted for location at this time. |
4 Properly torquing the bolt draws the Channel Nut with spring up against the in-turned channel lips, forming a strong, secure clamping connection. >Use caution not to bottom the bolt (select one of sufficient length, but not so long as to contact the inside back). Do not over torque the bolt. |
Specifications
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Extended Information
| Slip And Pull-Out Load Data | |||||
|---|---|---|---|---|---|
| Part No. | Resistance To Slip (Lbs./Bolt) Safety Factor |
Resistance To Pull-Out (Lbs./Bolt) Safety Factor |
|||
| Channel | Channel Nut | 3 | 5 | 3 | 5 |
| W200 | W2-8 | 1,500 (6.8kN) | 900 (4.0kN) | 2,000 (8.9kN) | 1,200 (5.3kN) |
| W210 | W2-8 | 1,000 (4.5kN) | 600 (2.7kN) | 1,400 (6.2kN) | 840 (3.7kN) |
| W300 | W2-8 | 1,500 (6.8kN) | 900 (4.0kN) | 2,000 (8.9kN) | 1,200 (5.3kN) |
| W500 | W5-8 | 1,000 (4.5kN) | 600 (2.7kN) | 1,400 (6.2kN) | 840 (3.7kN) |
Apply Proper Torque
| Design Bolt Torque | |
|---|---|
| Bolt Size |
Foot Pounds |
| ¼" - 20 | 6 Ft/Lbs (8.1 N•m) |
| ⅝" - 18 | 11 Ft/Lbs (14.9 N•m) |
| ⅜" - 16 | 19 Ft/Lbs (25.8 N•m) |
| ½" - 13 | 50 Ft/Lbs (67.8 N•m) |
| ⅝" - 11 | 100 Ft/Lbs (135.6 N•m) |
| ¾" - 10 | 125 Ft/Lbs (169.5 N•m) |
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.
