What Is the Purpose of Thumb Screws?
Thumb screws are used in components that need manual adjustment by hand, without the use of any additional tools. They are easy to use, simple to adjust, and ideal for applications that need frequent tightening or loosening. Primary purposes for thumb screws include:
- Tool-free assembly and disassembly
- Great for applications that require frequent access or adjustment
- Situations where fast, simple fastening is needed
What Are the Different Types of Thumb Screws?
Thumb screws are generally classified into two main types based on the presence or absence of a shoulder. Each type serves a distinct function in an assembly.
Type A (Type S) Thumb Screws – With Shoulder
Type A thumb screws feature an unthreaded shoulder beneath the head that acts as a bearing surface. The shoulder allows the thumb screw to be tightened against the mating surface. Type A thumb screws are measured from the underside of the shoulder to the tip.
Type B (Type P) Thumb Screws – No Shoulder
Type B thumb screws do not include a shoulder and function more like compression fasteners, similar to set screws. They are measured from under the head to the tip and are designed so the tip makes direct contact with the mating surface. This design is often used when positioning or applying pressure to a component.
Common Applications for Thumb Screws
Thumb screws are used across a range of
industries and applications where repeated hand-tightening access is required. Common thumb screw applications include:
- Machinery covers
- Access panels
- Furniture
- Fixtures
- Laboratory and testing equipment
- Electronics
- Adjustable mounts
- And more
Why Choose RC Fasteners as Your Thumb Screw Supplier?
At
RC Fasteners, our mission is to provide you with superior fasteners and unmatched service. As a leading national fastener supplier, we offer an extensive range of ready-to-ship fastening products with fast turnaround. Our customers rely on RC Fasteners because they know they’ll receive
consistent quality, transparent pricing, and expert support from our helpful and knowledgeable team.
Advantages of Choosing RC Fasteners for Thumb Screws
Learn How RC Fasteners Can Be Your Supplier for Thumb Screws in Bulk or Custom Quantities
Whether you need thumb screws or other
standard screws, RC Fasteners provides reliable products and responsive service across the United States.
Contact us today to discuss your application and sourcing needs, or
request a quote to get started on a custom order.
