M4 x 30mm 12.9 Alloy Steel Hex Socket Cap Screws Black 25pcs

Hexagon Socket Bolt Product Description

A hexagon socket bolt features a round outer edge and a recessed hexagon in the middle, making it ideal for use with a hexagon wrench. It is commonly utilized in machinery due to its easy fastening and disassembly capabilities, along with its resistance to slipping corners. These bolts are often found in applications where flat surfaces are necessary, with many of them being countersunk bolts that are embedded within the parts.

The application range of hexagon socket bolts is vast, spanning from household hardware and electrical products to mechanical equipment, ships, and airplanes. These bolts are predominantly used in electrical appliances, mechanical equipment, furniture, and other various fields.

Hexagon socket bolts are categorized into different grades, with over 10 grades available such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, and 12.9. Bolts with a grade of 8.8 or higher are crafted from low-carbon alloy steel or medium-carbon steel and undergo heat treatment processes like quenching and tempering, thus earning them the title of high-strength bolts. The remaining grades are commonly referred to as ordinary bolts. Additionally, hexagon socket bolts are also available in different stainless steel materials such as 201, 304, and 316.

Please refer to the linked product for specific size details and choose the appropriate size based on your requirements. Specifications for this particular product include a hex socket drive type, hex head style, and material made from 12.9 alloy steel. The package contains 25 socket head cap screws with a thread size of M4 x 22mm. These screws have a weight of 85g and a black main color, with a thread pitch of 0.7mm. The total length is 34mm, and the head size measures 7 x 4mm. Other dimensions include a width across flat of 3mm and a rod length of 30mm.

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