SEMS Screws
SEMS screws are pre-assembled fasteners that combine a screw with one or more free-spinning washers, typically a flat washer and/or a lock washer, under the head. This permanent assembly ensures the washers stay in place during handling and installation, improving efficiency and reducing the risk of lost parts. SEMS screws are commonly used in high-volume manufacturing and assembly applications where speed, reliability, and ease of use are critical.
Request a QuoteMaterials and Finishes
We list common materials and finishes for this item below. As always, if you're looking for another material or finish, we can find a way to source it! Learn more about our full list of materials and finishes, or contact us for any unique requirements.
Steel Zinc Plated (BZP)
Stainless Steel A2/304
A general purpose stainless steel which strikes a good balance between corrosion-resistance and cost.
Stainless Steel A4/316
Often referred to as 'marine grade' stainless steel due to it's excellent anti-corrosion properties, making it great for saltwater resistance.