Accurate measurements are essential for mechanical, industrial, automotive, home, and sports projects. Our Size Charts category provides clear, high-quality reference guides for bolts, screws, threads, wires, pipes, bearings, automotive components, home appliances, sports equipment, hardware tools, and more. Developed by experienced engineers with over 10 years in measurement systems and dimensional analysis, these charts ensure precision, efficiency, and confidence in every task. Whether you are working on CNC machining, fabrication, repairs, or DIY projects, our size charts are a trusted resource—helping readers select the right components, compare metric and imperial units, avoid errors, and save valuable time.
Shoulder bolts, also known as stripper bolts or shaft bolts, are specialized fasteners widely used in machinery, automotive assemblies, electronics, and various industrial applications. Unlike standard bolts, they feature a smooth, unthreaded shoulder between the head and threaded portion, providing a precise shaft or pivot for components. Choosing the correct shoulder bolt size is essential … Read more
A lathe chuck is one of the most critical components of a lathe machine. It directly affects machining accuracy, workpiece stability, surface finish, and operator safety. Selecting the correct lathe chuck size ensures that the workpiece is held securely while allowing efficient and precise machining operations. This Lathe Chuck Size Guide covers chuck types, standard … Read more
Set screws are vital fasteners used to secure one component within or against another, usually without a protruding head. In metric systems, they are designated by an “M,” indicating thread diameter in millimeters. Understanding M set screw sizes is essential for accurate selection in mechanical, automotive, industrial, and precision engineering applications. What Does “M” Mean … Read more
Shoulder bolts, also known as stripper bolts or shaft bolts, are specialized fasteners widely used in machinery, automotive assemblies, electronics, and various industrial applications. Unlike standard bolts, they feature a smooth, unthreaded shoulder between the head and threaded portion, providing a precise shaft or pivot for components. Choosing the correct shoulder bolt size is essential … Read more
Selecting the correct reducer is critical in mechanical and industrial system design. Proper sizing boosts efficiency, extends equipment life, and ensures safe, reliable operation. Undersized reducers risk premature failure, while oversized units waste energy and raise costs. This Reducer Size Guide explains key concepts and sizing calculations to help you confidently choose the right reducer. … Read more
In aerospace engineering, precision, safety, and reliability are absolutely critical. Every component, even the smallest fastener, directly impacts aircraft performance and operational safety. Fasteners—such as bolts, screws, rivets, and nuts—must meet strict specifications to endure vibration, thermal expansion, and extreme aerodynamic and structural loads during flight. This Aerospace Fastener Size Guide provides detailed guidance on … Read more
Couplings are essential mechanical components used to connect two shafts together for efficient power transmission. Selecting the correct coupling size is critical to ensure smooth operation, safety, and long equipment life. An improperly sized coupling can lead to excessive vibration, misalignment, noise, premature wear of components, increased maintenance costs, and in severe cases, complete system … Read more
When working with pipes—whether in home plumbing, industrial systems, or mechanical setups—tee fittings are among the most commonly used components. A small mistake in tee fitting size selection can lead to leaks, pressure loss, or even system failure. That’s why understanding a tee fitting size chart is essential before starting any project. In this detailed … Read more
When it comes to vehicle safety, few components are as small yet as critical as wheel lug nuts. They are responsible for keeping your wheels securely attached to the vehicle, handling road stress, and ensuring proper alignment. Choosing the correct lug nut size is not just a technical detail—it’s a matter of safety, performance, and … Read more
PVC pipes are everywhere—behind walls, under floors, in gardens, factories, farms, and massive infrastructure projects. Yet most people only notice them when something goes wrong. A leak. A blockage. A broken joint. That’s usually the moment we ask: What kind of PVC pipe is this, and was it the right one to begin with? In … Read more
