Sheet Metal Screws

What is Sheet Metal Screws? Dimensions, Properties and Uses

Sheet metal screws are essential in the construction, manufacturing, and engineering industries. They are used to join and secure two pieces of sheet metal and other materials such as plastic, wood, and composite. Unlike wood screws, sheet metal screws have a sharp point that enables them to create threads as they enter the metal and secure the material. This blog post discusses everything you need to know about sheet metal screws. We will cover the various dimensions, properties, and uses of sheet metal screws. So, let’s dive in!

What is Sheet Metal Screws?

Sheet metal screws are a fastener used in sheet metal and thin metal applications. They feature a round or flat head with a sharp threaded shaft that helps them become tightly secured into the material when driven. Sheet metal screws come in various lengths, grades, drive types, thread types and materials (such as stainless steel). Uses of sheet metal screws include sealing panels, attaching hinges to cabinets and mounting decorative fixtures. These sturdy and easy-to-install pieces are perfect for many DIY projects.

Sheet Metal Screws Dimensions 

ANSI/ASTM F593 Sheet Metal Screws

 

Phillips Flat Sheet Metal Screws Zinc
Nominal
Size
Head Dimensions Phillips Dimensions Protrusion Above
Gaging Diameter
Gaging
Diameter
Phillips
Driver
Size
Diameter Height Diam. Depth Width
Max. Min. Max. Min. Ref Ref Ref Max. Min.
0 .112 .096 .035 .026 .062 .035 .014 .026 .016 .078 0
1 .137 .120 .043 .033 .070 .043 .015 .028 .016 .101 0
2 .162 .144 .051 .040 .096 .055 .017 .029 .017 .124 1
3 .187 .167 .061 .047 .100 .060 .018 .031 .018 .148 1
4 .212 .191 .067 .055 .122 .081 .018 .032 .019 .172 1
5 .237 .215 .075 .062 .148 .074 .027 .034 .020 .196 2
6 .262 .238 .083 .069 .168 .094 .029 .036 .021 .220 2
7 .287 .262 .091 .076 .176 .102 .030 .037 .022 .243 2
8 .312 .285 .100 .084 .182 .110 .030 .039 .023 .267 2
9* .358 .316 .108 .091 .191 .118 .031 …. …. …. 2
10 .362 .333 .116 .098 .198 .124 .032 .042 .025 .313 2
12 .412 .380 .132 .112 .262 .144 .035 .045 .027 .362 3
14 .462 .427 .148 .126 .276 .160 .036 .049 .029 .410 3
1/4 .477 .442 .153 .131 .276 .160 .036 .050 .029 .424 3

Sheet Metal Screws Properties 

Sheet metal screws come in different materials, each with unique properties. The most common materials used to make sheet metal screws include stainless steel, titanium, aluminium, and brass. Stainless steel screws are popular for their durability, rust resistance, and high strength. Titanium screws are corrosion-resistant and have a high strength-to-weight ratio, making them ideal for aerospace applications. Aluminium screws are lightweight and resistant to corrosion; however, they are unsuitable for joining two pieces of metal. Brass screws are not commonly used but have excellent anti-corrosion properties.

Sheet Metal Screws Uses

Sheet metal screws are widely used in various applications, ranging from automotive, construction, and HVAC industries. They are commonly used to fasten roof panels, gutters, air conditioning ducts, electrical boxes, and other materials. The most critical aspect when choosing a sheet metal screw is ensuring it is tailored for the specific application. For instance, screws used in the marine environment must be corrosion-resistant.

Installation Guides

There are a few guidelines to follow to ensure that the sheet metal screws are installed correctly. First, pre-drilling holes of the appropriate size is crucial to ensure that the screws hold the materials sturdy. Always ensure the screw threads are tight and fully engaged with the fastened material to avoid stripping. Finally, it is advisable to use washers as they help distribute the load and prevent the screw from backing out.

Safety Precautions When Working with Sheet Metal Screws

Sheet metal screws, like any other tools, can pose a threat if mishandled. When using sheet metal screws, always wear appropriate protective gear, including gloves, eye protection, and face masks. When drilling holes, ensure that no wires or pipes in the area may be damaged. Finally, ensure all tools are in good working condition to avoid injuries or accidents.

Conclusion:

Sheet metal screws are essential for construction, manufacturing, and engineering people. Understanding the dimensions, properties, and uses of sheet metal screws can help you select the right screw for your project. Always consider the project’s appropriate screw size, material, and installation guidelines to ensure the best results. Finally, always observe safety precautions to prevent accidents or injuries when working with sheet metal screws. With this knowledge, you can tackle your next sheet metal project!

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