Material | ASTM Designation |
ASTM Description |
---|---|---|
Bar Stock: Channel Nuts |
A 36 | Merchant quality hot rolled carbon steel bars. Steel bars, carbon, hot rolled special quality. |
A 29-03 | ||
Bar Stock | A 569 | Merchant quality hot rolled carbon steel bars. |
Hardware | A 563 | Carbon and alloy steel nuts. Carbon steel externally threaded standard fasteners. |
A 307 | ||
Channel Nuts Stainless Steel |
B783 | Sintered 316 - "Domestic Nut" |
A240 | Bar Stock 316 - "Import Nut" | |
Aluminum Nuts | B221 | Channel Nuts |
Material/Finish | Material/Finish Codes | Description |
---|---|---|
Electroplated | EG | Fittings and hardware supplied as "Electro-Galvanized" in accordance with ASTM B 633. |
Mill-Galvanized (Pre-Galvanized) |
PG | Galvanized steel used in the manufacture of channel sections conforms to ASTM A 653 GR33 G90. Uncoated edges resulted from slitting, punching and channel cut off are present. |
Hot Dip Galvanized | HG | Channel and fittings which are hot dip galvanized after fabrication. |
Paint-Green Powder Coating | GR | A dark green low gloss powder coating is applied and thoroughly baked after steel has been cleaned and phosphatized. |
Stainless Steel type 304 | S4 | Heat resisting chromium and chromium-nickel stainless steel plate, sheet, strip for pressure vessel. |
Stainless Steel type 316 | S6 |
![]() 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. |
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.