Shoulder Bolts

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The shoulder in shoulder bolts refers to the unthreaded portion of the shank located directly below the head. This portion of the bolt may be either round or square. Aerospace, automotive and mechanical industries use round shoulder bolts both in finished products and in manufacturing equipment where movement is required. Read More…

Shoulder Bolts Shoulder bolts are straight mechanical fasteners with partially threaded shanks that are used in situations where pivoting or movement is necessary, though they may also be used to prevent motion where fully threaded bolts may loosen. Also known as shoulder screws or stripper bolts, these unique devices can be found in a variety of applications as both stationary and rotary fasteners.

Leading Manufacturers

Hackensack, NJ  |  800-272-3673

Our company has a reputation for superior products, customer service, and dependability. All our fastener products are built to last, and we know that our customers appreciate our dedication to using the best materials and manufacturing techniques. If you would like to learn more about us, contact us by phone or email, or stop by our website today!

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Ford Fasteners, Inc. $$$

Jefferson, OH  |  888-536-3674

Our company has manufacturing experiences dating back to 1970 and over the years we have grown into an international supplier of bolts. Our teams are committed to providing our customers with the best products possible and we offer quick turnaround on all orders. Here at Ken Forging we do not require any minimum orders and we can ship our stock bolts within 24 hours. Feel free to contact our representatives if you have any questions.

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Ken Forging $$$

Detroit, MI  |  800-521-2207

Wayne Bolt & Nut Co. delivers high-quality industrial, carriage, metric, stainless steel, titanium and other types of bolts to a wide range of industries and markets. We have over 50,000 sizes and styles of standard and special fasteners for you to choose from. Our quality products are approved by the major automotive manufacturers and when we’re audited we receive good to excellent ratings.

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Wayne Bolt & Nut Company $$$

Indianapolis, PA  |  317-472-9000

At Accurate Manufactured Products Group, our company’s focus is designing and manufacturing fasteners, production aids, and other measuring tool accessories that suit your needs. The stock items from our large inventory are shipped within 24 hours. Our team is made up of experts in custom manufacturing items quickly, at very competitive prices, with guaranteed customer satisfaction

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Accurate Manufactured Products Group, Inc. $$$

Macedonia, OH  |  330-468-3300

At SC Fastening Systems, it is our company's goal to be your number one source for your fastening needs. Our product line includes fasteners, bolts, sockets, threaded rod & studs, nuts, washers, screws, anchors, pins, and rivets. For more information about our capabilities, contact us today!

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SC Fastening Systems, LLC. $$$

Lawrenceville, GA  |  800-928-7439

Not only is O.E.M. Fastening Systems a full line fastener distributor but also a custom fastener manufacturer to your specs. We offer hex bolts, stainless steel fasteners and screws. We stock virtually every type of standard and semi-standard fastener to meet your fabrication, assembly & maintenance needs. Sentry can even manufacture custom fasteners to your print specifications. Contact us today!

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O.E.M. Fastening Systems $$$
placeholder image Ford Fasteners, Inc. Ken Forging Wayne Bolt & Nut Company Accurate Manufactured Products Group, Inc. SC Fastening Systems, LLC. O.E.M. Fastening Systems

Square shoulder bolts are used in this settings as well as applications such as woodworking as they resist rotation, providing a more secure clamp than fully threaded screws which may loosen due to vibrations. Beyond the shape differentiation, there are several different types of shoulder bolts. Locating screws, socket shoulder screws, stripper bolts, swing bolts and latch bolts are just a few examples. These bolts are all most commonly made of steel alloys with varying amounts of carbon, manganese, molybdenum, silicon, sulfur and phosphorous additives. These materials offer high tensile strength, corrosion resistance and specific surface qualities that may be enhanced with a number of treatments and finishes. Zinc plating and black oxide finishes are among the most common options.

The manufacturing process used to create shoulder bolts is similar to that of other bolt types. A steel wire rod is first heated consistently for an extended period of time and all rust particles are removed. If needed, the metal is coated for added protection. Cold forging is then used to shape the rod at room temperature and the rod is forced through dyes at a high pressure to be shaped into long perfectly round rods. Once cut down to the desired length, a second dye shapes the head of the shoulder bolt which may be square, hexagonal or slotted.

Cold forging using high pressure rollers is then used to press in the thread pattern at the end of the shaft while leaving an unthreaded shoulder. The finished course-pitched shoulder bolt is then ready for use in a variety of applications. It is important to note that the length of this particular type of bolt is a measurement of the unthreaded shank or shoulder rather than the full length of the device. Along with length and material considerations, key size, weight, thread size, shoulder diameter, threaded diameter and head type and diameter should all be considered and selected according to the requirements of the intended use.

Shoulder Bolt Informational Video