Socket Countersunk Barrel Nuts

Socket countersunk head barrel nuts have a standard socket drive. Available with either through hole or blind hole (see stock size chart for availability). The countersunk socket barrel nut has a smooth barrel under the head keeping a smooth sleek look throughout.
Socket countersunk sex bolts are ideal in applications where a high strength, flush fixing is required, whereby the countersunk head sits flush into the pre counter-bore holes providing a sleek and continuous flow with the surface of the application.
Within the industry, they are also often referred to as sleeve nuts.
Often used in products and projects where strength, aesthetics and health and safety could all be an issue as this fastener ticks all the boxes. The flush countersunk head reduces the risk of harm or injury by providing both pleasant aesthetic appearance and practicality with the smooth to touch head projection. The barrel diameter ranging from 4.5mm (M4) to 22mm (M16) also provides additional strength as well as an excellent means of joining.
Our socket countersunk head barrel nuts are available in A1 303 Stainless Steel and A4 316 Stainless steel, where the head diameters of the sleeve nut are manufactured to match the head diameter of standard DIN 7991 socket head countersunk screws.
Thread diameters from M3 to M16, with lengths ranging from 7mm to 27mm.
Non-standard sizes and materials are available to order as specials, including custom parts made to drawings.
Slotted Raised Countersunk barrel nuts also available. See our full range of Barrel Nuts & Sex Bolts here.