Overview
Shoulder screws are precision-engineered fasteners designed to provide a smooth, cylindrical bearing surface for rotating or sliding components. Featuring a distinct unthreaded shoulder between the head and the threaded shaft, the shoulder screw allows for accurate alignment and controlled movement in assemblies. Manufactured from high-quality materials such as stainless steel, alloy steel, or brass, shoulder screws are produced using advanced machining processes to ensure tight tolerances and consistent dimensions. The design of the shoulder screw supports applications requiring a durable pivot point or spacer, making it ideal for use in machinery, automotive components, and industrial equipment. Key features include a polished shoulder surface for reduced friction, a variety of head styles to accommodate different tools, and corrosion-resistant finishes to enhance longevity in demanding environments.
In terms of performance, shoulder screws offer reliable strength and precision, maintaining structural integrity under repeated stress and motion. Their versatility allows them to be used in a wide range of applications, including die sets, pulleys, linkages, and conveyor systems, where precise positioning and smooth operation are critical. The shoulder screw’s ability to serve as both a fastener and a functional component reduces the need for additional parts, streamlining assembly processes and improving overall efficiency. By combining robust materials with meticulous manufacturing standards, shoulder screws deliver consistent performance and durability, making them an essential component in industrial fastener solutions where accuracy and reliability are paramount.
| Product Type | Shoulder Screw |
| Head Style | Knurled or Round Head |
| Manufacturing Process | Cold Forged and Machined |
| Thread Type | Unified National Coarse (UNC) or Unified National Fine (UNF) |
| Common Materials | Carbon Steel, Stainless Steel, Alloy Steel |
| Available Sizes | Shoulder Diameter: 1/8″ to 1″; Thread Diameter: #4 to 1″ |
| Strength Features | High Shear Strength, Precision Shoulder Diameter for Accurate Alignment |
| Typical Applications | Machinery, Automotive, Electronics, Pivot Points, Sliding Mechanisms |
| Surface Finishes | Zinc Plated, Black Oxide, Passivated, Plain |
| Standards | ASME B18.3, ISO 7379 |
| Customization | Custom Sizes, Materials, Threads & Surface Finishes Available |
Ensures exact diameter and smooth surface for accurate alignment and rotation in assemblies.
Available in alloy and stainless steels for enhanced tensile strength and corrosion resistance.
Suitable for use in automotive, aerospace, and industrial machinery requiring precise component positioning.
Options include zinc plating and passivation to protect against environmental degradation.
Minimizes friction and wear between moving parts for extended service life.
Manufactured to meet DIN, ISO, and ASME standards ensuring quality and interchangeability.
| Product Type | Shoulder Screw |
| Thread Type | Metric, UNC, UNF |
| Diameter Range | M3 to M24 |
| Length Range | 10 mm to 150 mm |
| Available Materials | Stainless Steel, Carbon Steel, Alloy Steel |
| Manufacturing Standards | DIN 5406, ISO 7379, ASME B18.3 |
| Surface Finish | Zinc Plated, Passivated, Plain |
| Diameter (mm) | Shoulder Length (mm) | Thread Length (mm) |
|---|---|---|
| M3 | 6 – 20 | 4 – 10 |
| M6 | 10 – 50 | 6 – 30 |
| M12 | 20 – 100 | 10 – 50 |
| M24 | 50 – 150 | 20 – 80 |