Machine Bolts

A machine bolt is a low or medium carbon steel, externally threaded mechanical device with machine thread pitch and a 1/4 inch in diameter or larger, with a trimmed hex head or square head and typically hot-dipped galvanized coating. A machine bolt does not have a washer face on its bearing surface as does a hex cap screw, nor does it have a mechanical point. Its body tolerances are not as close as those of a hex cap screw. Machine bolts are designed to be used in highly corrosive environments (coastal locales and heavily polluted atmospheres).

Here at BW Industrial Sales, your satisfaction is our number one priority! If you have any questions about machine bolts or any other manufacturing parts and tooling, please contact our experienced and qualified BW Industrial Sales staff; or call us at 626-358-1836 for an immediate response
Request a quote on bolts specific to your application, or contact us for more information.

Specifications of Threaded Machine Bolts

May be inserted into an oversized hole and should be assembled with a nut to secure the assembly. Machine bolts shall be manufactured from steel which conforms to Rockwell B69 – B100 for bolts of length less than 3X nominal diameter and Rockwell B100 maximum for bolts of length equal to or greater than 3X nominal diameter, with a tensile strength of 60,000 psi. BW Industrial Sales carries hex head and square head machine bolts, available and ready-to-ship in a variety of sizes and coatings. Browse our selection of machine bolts for your building projects and industrial applications.
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