Brass Sems Screws

The Brass Sems Screws, offered by us, are often used in combination with screws to improve the structural integrity of an assembly. Typically, our Brass Sems Screws are separate components. However pre-assembled screws and washers – the SEMS screw, has simplified and improved efficiencies in many manufacturing processes. A Brass Sems Screw is generic term used to describe a screw pre-assembled with a free-spinning lock washer. Our Brass Sems Screws are permanent assembly with the washer held in place by the major diameter of the screw thread being larger than the hole of the washer. The Brass Sems Screws, we offer, are simple, easy to use and available in many different styles making them well suited for many applications.

Advantages of the Brass Sems Screws

• Low cost and widely available
• Increases productivity by eliminating hand assembly of individual components
• Permanent assembly assures that the washer is not dropped, lost or forgotten
• Ease of use with hand drivers and in automated production programs
• Available in most screw and washer combinations

Materials

• Mild Steel (MS)
• Brass
• Stainless Steel
• Copper
• Silicon Bronze
• Phosphate Bronze

Thread

• 2 MM to 8mm
• 18 to 516
• 8 BA to 2 BA

Length

• 4 MM to 150 MM  
• 316” to 6”

Threads

• ISO Metric (MM Threads)
• BSW Threads (Inches)
• BA Threads
• BSF Threads
• Any thread as per design

Standards

• ISO
• IS
• DIN
• BS
• JIS

Finishing

• Nickel Plating
• Chrome Plating
• Tin Plating
• Copper Plating
• Blue Zinc Plating
• Yellow Zinc Plating
• White Zinc Plating
• Silver Plating
• Gold Plating
• Brass Plating
• Any other coating as per customer requirements