While A194 Grade 4 and A194 Grade 7 nuts are mechanically identical and have the same intended applications, the only difference is the chemical values (aka steel used to manufacture). Grade 4 was created to be a low-cost alternative to Grade 7 by using a lower cost raw material.

Aug 17, 2015 · ASTM recommends that charpy’d nuts be used with A320 L7 bolts, so A194 gr.7L nuts should be used. If you are using gr.7 nuts on other grades of bolt (like A193 B7 or B16), then the charpy test is not required and a standard grade 7 is acceptable.

The ASTM A194 specification covers carbon, alloy, and stainless steel nuts intended for use in high-pressure and/or high-temperature service. Unless otherwise specified, the American National Standard Heavy Hex Series (ANSI B 18.2.2) shall be used.

ASTM A194 Grade 4 is a standard material specification for high tensile nuts and other internally threaded fasteners, made from carbon molybdenum steel. Grade 4 nuts can be produced by means of hot forging, cold forging or machining from bar stock followed by heat treatment.

Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or both. ASTM A194 specification covers a variety of carbon, alloy, and martensitic stainless steel nuts in the size range 1/4 through 4 in. …

ASTM A194 is a standard developed and published by the American Society for Testing and Materials (ASTM), now known as ASTM International. The specification covers a range of carbon, alloy, and stainless steel nuts primarily designed for …

Mar 15, 2024 · ASTM A194 Grade 4 nuts, specifically, are designed for heavy-duty applications requiring exceptional tensile strength and durability. ASTM A194 Grade 4 nuts are typically made from medium carbon or alloy steel.

A self-locking hex nut is a type of hexagonal nut that is designed to resist loosening due to vibration or movement. It typically features an integrated locking mechanism that prevents it from turning or coming undone once it has been tightened.

Plain Hexagon Nut in Nuts. thread: 1/4-28, cadmium plated steel, right hand thread, jam nut, AN316 series nut

ASTM A194 grade 4 Heavy Hex Nut is a bit larger and thicker compared to standard hex nuts. It is a specification which covers alloy, carbon and stainless steel nuts considered to be utilized in high-pressure and temperature service.