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…
Ken ForgingJefferson, 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.$$$
Southern Fasteners & Supply, LLCWinston-Salem, NC | 800-642-0921
With more than 130,000 commercial and industrial grade fasteners in inventory, our wide distribution network is positioned to get you the parts you need fast. Whether we’re keeping your bins full with a Vendor Managed Inventory Program or rushing emergency replacement parts with 24-hour on-call service, you’ll know that we’ve got you covered. Our HQ’s quality system is certified to AS9120 with ISO 9001 by NSF-ISR to ensure the fasteners we supply are the highest quality parts available.$$$
AFT FastenersMansfield, TX | 877-844-8595
We are located in The Dallas area, but we are dedicated to serving customers everywhere. Our products serve many industries including automotive, construction, and many others! We have been producing high quality products since 1984 and this is a tradition that we strive to continue! Get in touch with our customer service department today to learn more about what we may do for you!$$$
E & T FastenersConcord, NC | 800-650-4707
E & T Fasteners provides your fastening solutions in record time. We specialize in molded and machined industrial plastic and metal fasteners. We offer stock items such as plastic bolts, screws, nuts, washers, spacers, threaded rod, metal stud fasteners and non-threaded metal fasteners. Plus, we'll customize to your specifications.$$$
Haydon Bolts, Inc.Philadelphia, PA | 215-537-8700
As one of the most experienced industrial bolt manufacturers in the world, we put our experience to work in the development and production of your part: eye bolts, anchor bolts, hexagon bolts, stainless steel bolts and u bolts. We’re a proud member of the AISC, and our roots reach back to 1864. Our clients trust us to supply the best bolts, washers, nuts, rods, weld studs, turnbuckles, and mechanical anchors on the market. Come to us for one of the largest inventories of bolts, nuts and washers.$$$
BTM ManufacturingKansas City, MO | 800-369-2658
Established in 1961, BTM Manufacturing creates fastener and threaded components for OEMs across the country. We design high-quality U-bolts, J-bolts, spade bolts, studs, anchor bolts, eye bolts, and rods for multiple applications. We provide custom manufacturing services to ensure customers can find the right part for their project.$$$
More Shoulder Bolts Suppliers
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.