About Bulk Machine Screws
AMK Products offers bulk screws online, such as Fillister and Fillister SEMS, Flat and Flat SEMS, Hex and Hex SEMS, Hex-Washer including SEMS, Oval and Oval SEMS, Pan and Pan SEMS, Round and Round-Washer, Sockets, Wafer, Wing and 12 point. A broad range of special configurations and finishes are offered, most common finishes for bulk screws are plain (stainless), phosphate & oil, Delta Seal Black, zinc & wax, zinc & yellow, cadmium & wax and chromium. Note that AMK often applies chromium over stainless steel. Some machine screws also feature a locking component such as a nylon patch, pellet or a locking thread design.
To ensure the finest details in our automotive screws, AMK frequently supplies tooling directly to the manufacturers producing our products. This is done to guarantee the outcome of desired characteristics such as drive entrance chamfer and engagement, head radius, face diameter, accuracy of markings and indention criteria etc.
We offer a superior selection when you buy bulk machine screws through us, including Fillister SEMS, Hex SEMS and Hex-Washer options, Oval head machine screws in stainless steel, Oval SEMS, Pan with stainless steel shoulder and Pan thread cutting options.
AMK offers a great selection of classic car screws with “SEMS” washers. Let’s learn about them. “SEMS” stands for “Screw and Washer Assembly”. The process requires a washer with an exact inside diameter, large enough to fit onto the screw blank before thread rolling and smaller than the major diameter so it will not slip off after thread rolling. Also, a special washer feed system is utilized to automate the installation of the washer. A thread roller equipped with the feed system is called a “SEMS roller”. AMK goes all-out to facilitate the production of our bulk machine screws. AMK stocks and supplies over 1 million SEMS washers to our manufacturers annually. We are very familiar with the intricacies of conical, conical tooth, external, internal/external, countersunk, finish and additional special types of SEMS washers.