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#METAL RIVET FULL#

Similar to pancake head, hex head fasteners are typically made of carbon steel coated in galvanized steel.

Third number (1”): Length of the fastenerĪs the name alludes to, these fasteners have a hex head drive type. Second number (20 ): Thread count per inch (TPI) Hex head fasteners follow this sizing structure:įirst number (¼” ):Diameter of the fastener In open-framing concealed fastener roofing applications, hex head fasteners are installed through a floating clip. Hex head fasteners are used when attaching metal roofing panels to metal purlins. For saltwater environments where galvanized steel fasteners will corrode quicker, stainless steel pancake head fasteners are available in 302, 304, and 410 stainless.īoth metal and wood roof decks are suitable for pancake head fasteners. Pancake head fasteners are typically made of carbon steel coated in galvanized steel. Depending on where you buy your fasteners from, most pancake fasteners will have a Phillips or a square drive type tip. Third number (1½” ): Length of the fastenerĮnding letters/descriptor (GP ): Screw point typeįor the most part, pancake head fasteners are split into two categories: regular pancake head and ultra-low profile pancake head.

14 and above are better suited for metal applications.

13 and below are better suited for wood applications.

Second number (16 ): Thread count (threads per inch – TPI) To someone not in the industry, it might be a little complex, so we’ll break down each element of the fastener type:įirst number (#10 ): Gauge of the fastener head (diameter) Pancake head fasteners have a specific sizing system, which looks something like: Pancake fasteners can be used in trim applications as well. Pancake head fasteners are the most commonly used fastener in a standing seam roof system. These fasteners are attached to the roof deck through the appropriate roofing clip, which is then attached to the panels and secures them to the deck. The head of the fastener sits flat atop the clip like a pancake, hence the name pancake head fastener. Rivets / pop rivets Concealed Fastener Types #1: Pancake Head Fastener Four main fastener types fit into two categories, and they are as follows:Ĥ. We could spend a lot of time diving into each type, size, and use, but instead, we’re going to keep in simple.

We define these types of fasteners as any type of screw, rivet, or device used to secure metal panels, trim, and flashing materials together or to the roof deck.įasteners are not “one size fits all,” which means they come in a variety of different types based on the project application. For example, the category of fasteners can include such items as:įor this article, we’ll focus on one small subsection of fasteners used in standing seam metal roof applications. “A hardware device that mechanically joins or affixes two or more objects together … fasteners are used to create non-permanent joints that is, joints that can be removed or dismantled without damaging the joining components.”īut the term “fastener” is broad and applies to products in many different industries. If you were to look up fastener in a dictionary, you’d get something along the lines of:

Key considerations to remember about fasteners.

The various types of fasteners to choose from.

We believe it’s essential to become educated on fasteners and the various uses to protect your metal roof installation.

#METAL RIVET FULL#

However, in actuality, fasteners play a significant role in how a standing seam metal roof will perform, as fasteners are the main anchor points for the metal panels (and clips) to stay attached to the roof deck.īeyond carrying a full catalog of fasteners and other metal roofing accessories, Sheffield Metals also tests all of our engineered metal roofing systems with specific fasteners to ensure our customers are getting the best products available. It seems like such a small piece of the puzzle, right? At first glance, you might not think much of a fastener used in a metal roof system.