Carbon Steel Thread-Locking Hex Head Screws

Name: High-Strength Grade 8 Steel Thread-Locking Hex Head Screws&Stainless Steel Thread-Locking Hex Head Screws

Material: Carbon steel, Stainless steel SUS304, SUS316

1. High-Strength Grade 8 Steel Thread-Locking Hex Head Screws. Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are more than twice as strong as our stainless steel thread-locking screws. A nylon patch bonded to the threads adds friction to resist loosening from vibration. These screws have a zinc yellow-chromate plating that provides corrosion resistance in wet environments. The material meets SAE J429 specifications for quality. Dimensions meet ASME B18.2.1 specifications. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.Place a cotter pin through the hole in the shank to keep a nut from loosening (pins and nuts sold separately). These screws have a stronger hold than screws with thread lockers or lock washers. Screws are made to stringent Army-Navy specifications that ensure performance and reliability. They have a precisely measured unthreaded portion (grip). For added strength, place this portion in joints subjected to sideways forces. The cadmium plating provides good corrosion resistance to salt water. Screws have fine threads, which are closely spaced to prevent loosening from vibration; they are not compatible with coarse or extra-fine threads. Length is measured from under the head.

2. Medium-Strength Metric Class 8.8 Steel Thread-Locking Hex Head Screws. These Class 8.8 steel screws are suitable for fastening most machinery and equipment. They are over 50% stronger than stainless steel thread-locking screws. A nylon patch bonded to the threads adds friction to resist loosening from vibration. These screws have a zinc plating that provides corrosion resistance in wet environments. Dimensions meet ISO 4017 (formerly DIN 933) specifications. Length is measured from under the head.

3. Stainless Steel Thread-Locking Hex Head Screws. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. A nylon patch bonded to the threads adds friction to resist loosening from vibration. Length is measured from under the head.

4. Cotter Pin-Lockable Hex Head Screws. Place a cotter pin through the hole in the shank to keep a nut from loosening (pins and nuts are sold separately). These screws have a stronger hold than screws with thread lockers or lock washers. Screws are made to stringent Army-Navy specifications that ensure performance and reliability. They have a precisely measured unthreaded portion (grip). For added strength, place this portion in joints subjected to sideways forces. The cadmium plating provides good corrosion resistance to salt water. Screws have fine threads, which are closely spaced to prevent loosening from vibration; they are not compatible with coarse or extra-fine threads. Length is measured from under the head.

Size Can also be According to the Customer's requirement for manufacturing, please check the detailed specification sheet details PDF, CAD, 169-170 Page See more product details.

Packaging: The inner packaging is a plastic bag, and the outer packaging is a carton. Then the tray. Carton size: 29*19*19.5cm and 23.5*17.5*8, cm and pallet size: 215*100*90cm, or as your request.