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Encyclopedia of Fasteners & Hardware Items
 
Courtesy of FastenerMart.com
 
—  BOLTS  —

Anchor Bolts

Anchor Bolts are designed for structural anchoring applications. For a right-angle hook, select "L" style; "J" style has a circular hook. For outdoor use, choose hot-dipped galvanized due to superior corrosion properties. A nut and washer are included where noted.

Carriage Bolts

Also Called: Carriage Screws

Carriage Bolts are used for fastening wood to wood and wood to metal. To prevent turning, the bolt has a square neck design. Measure length from under the dome head to the tip.

Draw Bolt Joint Assembly

Also Called: Joint Draw Assembly, Counter Top Draw Bolts

These assemblies include a hex head bolt, a threaded plate and a sliding plate that is unthreaded. No special tools are needed, making them fast and easy to use. Ideal for joining countertops. Perfect miter and butt joints can be made with superior holding power by using Draw Bolt Joint Assemblies. Measure length from under the head to the tip.

Elevator Bolts

Also Called: Belt Bolts

Elevator Bolts are used whenever a flat head is needed and head clearance is critical. These bolts have the largest head diameter of all the flush head styles. They have a square neck that prevents spinning. Measure length from the top of the head.

Machine Bolts

Also Called: Square Head Bolts, Hex Head Bolts, Cap Screws

Square Head Machine Bolts are easily gripped by a hand wrench due to the large bearing area design. Hex Head Machine Bolts are sometimes called cap screws, but Machine Bolts tend to be larger--up to 1-1/2" in diameter or more, and up to 20" in length. The length of machine bolts is measured from under the head to the tip.

Plow Bolts

The diameter of Plow Bolts and the width of their square neck are equal. The square neck design prevents the bolt from turning. Length is measured from the top of the head to the tip.

Step Bolts

Step Bolts resemble carriage bolts but have a larger diameter head. The square neck prevents the bolt from turning. Measure length from under the head to the tip.

Stove Bolts

Also Called: Machine Screws

Stove Bolts are machine screws that are supplied with a matching machine screw hex nut. Available in Slotted Round and Slotted Flat head versions, the most common sizes are 1/8 (which is a 6-32 machine screw), 5/32 (8-32 machine screw), 3/16 (10-24 machine screw), 1/4-20, 5/16-18, 3/8-16 and 1/2-13. Measure the length of Round Head Stove Bolts from under the head to the tip. For Flat heads, length includes head height.