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…
Leading Manufacturers
Ford Fasteners, Inc.
Hackensack, NJ | 800-272-3673Our 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!
Ken Forging
Jefferson, OH | 888-536-3674Our 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.
AALL AMERICAN Fasteners
Cinnaminson, NJ | 877-791-4426AALL AMERICAN Fasteners delivers high-quality industrial, carriage, metric, stainless steel, titanium and other types of bolts to a wide range of industries and markets. We have thousands of different sizes and styles of standard and special bolts for you to choose from. We are able to meet off-the-shelf, semi-custom and made-to-specification fastener requirements. Contact us today!
Crouch Sales Co., Inc.
Dallas, TX | 214-637-6051We provide the very best bolts to all of the Dallas Ft Worth area. We are a family owned company, which means we can provide personalized customer service to all of our customers. Since the 1960s, we have given our customers the very best in products, performance, and quality. We hope to build lifelong relationships with customers so we can share our family with yours!
Liberty Fastener Company
Bensenville, IL | 800-444-7414Liberty Fastener offers a vast line of high quality industrial bolts including carriage bolts, eye bolts, lag bolts, metric bolts, nut and bolt combinations plus structural, plow, hanger, elevator bolts and others. Contact us for outstanding customer service and high quality industrial fasteners.
Hanger Bolt & Stud Co.
Greenfield, IN | 800-537-7925At Hanger Bolt & Stud Co., we manufacture all of our products according to the Industrial Fasteners Institute standards and are competitively priced. We offer hanger bolts, dowel screws, rail bolts, single-ended, double-ended, and fully threaded studs as well as smooth body and knurled pins. No matter what product you require, we can ensure that your custom parts are made to your specifications and delivered on time. Contact us today to learn more!
Shoulder Bolts - Ken ForgingSquare 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.