flat head undercut machine screws, factory direct sale

The flat head undercut machine screws is buried and countersunk, and the bearing surface is tapered. Suitable for applications where fasteners are not allowed to protrude on the bearing surface. Machine threads are used for pre-tap holes or with nuts. Stainless steel provides the highest corrosion resistance for most woodworking projects.

The flat head undercut machine screws has a flat surface that begins to taper toward the valve body, but its flat-head type allows a shallow countersunk that is not possible with standard flat-head fasteners. The cross drive type has a cross-shaped groove for the cross drive. To prevent damage to the fastener head and the fastening surface, the drive design forces the driver cam outward when the fastener is sufficiently tightened.

The flat head undercut machine screws made of carbon steel are durable, but they have lower corrosion resistance than stainless steel. In order to improve its corrosion resistance, it can accept additional surface treatment and coating.

Shi Shi Tong Metal Products Co., Ltd. specializes in the production of flat head undercut machine screws. It has 20 years of experience in screw production. The fasteners are available in nylon machine screws, steel machine screws and stainless steel machine screws. We have a wide range of head types, including flat head screws, round head screws, hex head screws, elliptical head screws and more. Welcome Inquiry!

If you want to customized flat head undercut machine screws, please send an email: annie.li@szsst88.com