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Buy Fine and coarse thread machine screws available in stainless steel, black oxide, brass, silicon bronze, and zinc finishes.

Fine Thread Machine Screws

Stove Bolts in a Variety of Drive, Head and Thread Styles

A fine thread machine screw is a screw or bolt with a flat point and a uniform diameter along the entire length of the shaft. Available in a variety of drive styles, fine thread screw sizes, heads, and materials to fit a wide range of application needs, from machine components to appliances and more. These fasteners are either used in combination with nuts or driven into tapped holes. In practice, fine thread machine screw sizes tend to be smaller. Pan head, flat head, oval head, and truss head stove bolts are the most popular varieties.

AlbanyCountyFasteners.com offers fine thread machine screws in 304 Stainless Steel, 18-8 Stainless Steel, 316 Stainless Steel, Black Oxide Stainless Steel, Solid Brass, and Silicon Bronze finish. Stainless steel fasteners are corrosion resistant in varying grades. For environments requiring an extremely resistant product (such as saltwater), we recommend 316 stainless steel. 18-8 and 304 stainless steel grades are considered the industry standard for fine thread screws and have corrosion-resistant qualities. Black oxide fasteners offer the same attributes as their standard stainless steel counterparts but have a chemically treated coating to add a sleek black finished look. For wood and plumbing applications, brass fine thread fasteners are used due to their nonmagnetic nature and heat resistant qualities.

FAQs

What is a fine thread machine screw?

A fine thread machine screw is defined by the increased number of threads per inch (TPI) along the length of the fastener. Due to the increased TPI, fine thread screws have a higher tensile strength and are less susceptible to loosening due to vibration.

What is the difference between a bolt and a machine screw?

In the context of machine screws, the distinction between machine screws and bolts can get a little murky. Generally speaking, machine screws are smaller than bolts. They tend to have thread diameters ranging from #0 - 3/8" sometimes larger while bolts can go up to 2" in diameter or more.

These examples are not completely definitive, and you'll find machine screws referred to bolts regularly. It ultimately depends on how you use the fasteners to determine the correct terminology.

What is a machine screw anchor?

Machine Screw Anchors are used with machine screws or bolts to anchor fixtures to concrete or masonry materials. Like many concrete anchors, machine screw anchors are installed into pre-drilled holes in masonry materials and set using a special tool. As the screw is tightened, it pulls up a wedge at the anchor's bottom, which expands the sleeve to fit snugly in the pre-drilled hole. Machine screw anchors are safe for concrete, brick, or block and fill uneven or irregular spots in the hole. The screws or bolts can be removed from the anchor and reinstalled later, without sacrificing the anchor's holding power.

Use machine screw anchors with sidewalk bolts for maximum holding power on your application.

Where are machine screws used?

Fine thread screws are most frequently found in metal parts and panels needing to be secured together, such as in electronics, engines, and industrial manufacturing equipment. You'll find them used frequently in industrial, manufacturing, construction, assembly, and production environments.