Hex head fasteners are among the most common types of bolts and screws, used in everything from automotive repairs to construction. But choosing the right wrench size is crucial—using the wrong tool can strip the bolt, damage the tool, or even cause injuries.In this guide, we’ll cover:✔ Standard hex

A325 bolts and A490 bolts are the backbone of modern steel construction, yet critical differences in strength, corrosion resistance, and applications dictate where each should be used. As a leading fastener manufacturer, Panda Fastener breaks down these essential ASTM standards to help engineers and

Introduction to Socket Head Cap Screws and Bolt GradesSocket head cap screws, commonly referred to as Allen bolts or hex socket screws, are among the most versatile and widely used fasteners in industrial applications. Their distinctive cylindrical head with an internal hexagonal drive provides exce

The Origin of the Name: From Brand to Generic TermThe common designation of Socket Head Cap Screws as "Allen Screws" traces back to early 20th century American industrial history. This terminology originates from the Allen Manufacturing Company - the Hartford, Connecticut-based enterprise that first

Socket head cap screws (commonly called Allen screws) are essential fasteners in machinery, automotive, and industrial applications. Their hexagonal socket design provides excellent torque transfer, but when damaged, removing a stripped Allen screw or socket head cap screw can be challenging.

Bolts are among the most essential fasteners in construction, manufacturing, automotive, and countless other industries. Choosing the right bolt type ensures structural integrity, safety, and performance. This guide explores common bolt classifications, their applications, and how Panda Fastener provides high-quality solutions for your fastener needs.