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Star Socket Shoulder Screw

Star socket head (Torx Socket compatible) shoulder screws provide a cylindrical head with a recessed six-pointed, star-shaped socket drive and an integral shoulder between the head and thread. The head is the largest diameter of the recessed star socket shoulder screws, followed by the shoulder and thread.  Only the thread of a star socket screw is embedded, allowing the shoulder to extend beyond the part surface and create a journal.
Ondrive’s star screw socket’s unique design allows for rotational or axial motion of the component mounted on the screw, making these screws an excellent choice for mounting bearings, bushings, gears, pulleys, sprockets, and other rotating parts.
Download our product specifications PDF to view complete sizing information for our in-stock recessed star head shoulder screws.

Torx Socket Head Screws for High Torque Exertion

The shape of a star screw drive allows for high torque exertion and prevents “cam out” that can damage or break the screw head and tooltip. The ability to achieve higher torque also means a smaller fastener's head can be used in applications where space is limited.

Star Socket Screws for High Torque Tightening Applications

Star socket head screws are highly versatile and used by industries ranging from aerospace to consumer goods. In addition to mounting rotating parts, they can be used as linear slides for aligning die and mold halves in punch-and-die or injection molding applications.

Star Screw Socket Material Options

Star socket screws from Ondrives.US are Torx® compatible and available in 303 stainless steel. This austenitic material is cold-drawn and widely used to manufacture precision fasteners. It provides Rockwell B83 hardness, good corrosion resistance, and enhanced tensile strength.

Torx Socket Shoulder Screw Tolerance Measurements

Our recessed star screws are precision grade and have a tighter shoulder diameter and shoulder-length tolerance than commercial shoulder screws. We offer a broad range of standard, in-stock sizes to give you more flexibility in finding the right star head socket screw for your precision application. We also provide custom sizes and materials upon request.
Measurements are as follows:
  • Head Height: measured from the top to bottom of the screw head
  • Shoulder Length: measured from under the screw head to the bottom of the shoulder
  • Thread Length: measured from under the shoulder to the tip of the thread

Selecting the Right Recessed Star Head Shoulder Screw Size

Shoulder length and diameter are the portions that create the journal; thus, they are essential factors in selecting a Torx® compatible head screw. The shoulder must be the appropriate size for secure mounting and proper rotation or alignment. Our Shoulder Screw Buyers Guide provides additional information about selecting the right hexalobular star socket screw for various rotational and sliding applications.
View our product specifications PDF to see a complete listing of our in-stock recessed star screw sizes. All sizes are listed in inches and specified by head diameter and height, shoulder length and diameter, thread length and type, and star drive size. Custom sizes are also available upon request.
The Ondrives.US Advantage
At Ondrives.US, we firmly commit to the quality and consistent improvement of our precision-manufactured star socket shoulder screws. We offer cost-effective solutions, expert service, and timely delivery for all our customer's mechanical components needs.

Custom Star Socket Shoulder Screw Manufacturing Capabilities

With a fully-equipped production facility, advanced manufacturing equipment, and comprehensive fabrication capabilities, Ondrives.US produces custom Torx socket shoulder screws that deliver the performance and reliability you need.

Order Star Socket Shoulder Screws Today

Ondrives.US offers Torx socket shoulder head screws in various sizes and threads to meet your application requirements. For unique applications, contact us to discuss how we can modify our star socket shoulder screws or create a customized solution based on your specifications.