Square Nuts A four-sided nut that may be flat or beveled on top. Square nuts provide a greater surface contact area which provides more resistance to loosening. Typically mated with square head bolts.Square Nuts offer greater resistance to loosening and rounding compared to hex nuts. Square Nuts have a greater surface area in contact with the substrate and more acute angles. Square Nuts are often used within furniture and slotted applications.Square Nuts are offered in steel with a zinc, galvanized or plain finish. Available in regular and heavy configurations, square nuts are designed for use with square bolts and offer a wider wrenching surface than hex nuts.
| Metric : | Dia M5 - M24 |
|---|---|
| Strength | Class 5, 8 & A4-70 : |
| Thread : | Metric Coarse |
| Material/Finish : | Hot Dip Galvanised & Stainless Steel |
| Compliance : | DIN 557 |
Square nuts can be used in a channel or welded to other steel products. A square nut is a four-sided finish nut. Compared to standard hex nuts, square nuts have greater surface contact with the part being fastened. Therefore, they have a greater resistance to loosening than standard hex nuts, but also greater resistance to tightening, making these nuts a little harder to install securely. They are also much less likely to become rounded-off after repeated loosening/tightening cycles.
Square nuts are typically mated with square-headed bolts. Square nuts are used along with flat washers to avoid damage from its sharp edges and increase the strength of the fastener. They are installed on the opposite side of the materials being fastened. With the bolt head or machine screw head on the other side, they compress the materials together for a secure fit.
18-8 or 304 grades of Stainless steel are suitable for many general purpose applications, especially freshwater and non-salt water wet environments. Corrosion-resistant and durable, 18-8 stainless steel is equivalent to the A2 grade of stainless steel.
For much more corrosive environments, such as in saltwater or marine applications, 316 stainless steel is the ideal choice. 316 Stainless steel is equivalent to A4 stainless steel.
Zinc is by far the most common and economical type of plating for fasteners. The zinc plating adds a protective "sacrificial" top layer against corrosion while also adding a shiny finish to the threaded rod. Zinc plating is ideal for indoor use, where it won't be constantly exposed to harsh elements.
Hot-dip galvanizing is done by submerging the fastener in molten zinc to provide a corrosion protecting finish. Essentially, the added zinc that's applied through the galvanization process serves as a "sacrificial" layer of protection to keep the steel underneath from degrading or being damaged.
