What is the strongest socket head cap screw?

Metric Grade 12.9 Hex Cap Screws Used in high stress environments, grade 12.9 fasteners are the highest class of metric cap screws. Where Grade 8 fasteners have a 150,000 psi tensile strength, 12.9 fasteners have a 180,000 psi tensile strength, making them more durable than the grade 5.

Are socket head cap screws stronger than Grade 8?

Socket head cap screws are not grade designated as are hex head cap screws. A standard inch series socket head cap screw is 20% stronger than a Grade 8 hex head cap screw and 50% stronger than a Grade 5 hex cap screw.

Are bolts and cap screws interchangeable?

These terms are often incorrectly used interchangeably. The most basic difference between a cap screw and a bolt is the way in which these fasteners are installed. Therefore, cap screws are often threaded into a tapped hole on a piece of equipment or machinery or installed in some other OEM application.

How hard is a socket head cap screw?

The tensile strength is a minimum 180,000 psi for sizes 1⁄2′′ diameter and smaller and 170,000 psi for 5⁄8′′ diameter and above. Tensile strength may vary according to heat treatment and manufacturer.

What material are socket head cap screws?

alloy steel
Socket Head Cap Screws are heavy duty screws made from DFARS sourced alloy steel. Manufactured in the USA by Parker Fasteners, these strong externally threaded screws offer the highest strength for commercial fasteners, and are the ideal fastener where there is not sufficient space for wrenches or sockets.

Is a hex cap screw bolt partially threaded or fully threaded?

Hex Cap Screws / Hex Cap Bolts Cap screws are typically fully threaded up to 1-1/4″, hex cap bolts over this length are almost always partially threaded. Hex cap screws are available in diameters 1/4″ and up.

What is the difference between a bolt and a hex head cap screw?

What is the difference between a hex bolt and a hex cap screw? A hex cap screw has tighter tolerances on the body dimensions and features a chamfered end and a washer face under the bolt head. Hex bolts have a flat end and lack the washer face under the head.