that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident.

M5 Machine Screws | Bolts | Screwfix M5 Machine Screws | Bolts | Screwfix

The thumb screw is designed to be easily tightened and loosened by hand, hence the name thumb screw. Most thumb screws come in either long or very short lengths, depending on the application where they are needed. While most are used in some form of plastic or metal assembly, it is not unusual to see thumb screws for wood assemblies where the specific type of construction, installation, or action they perform makes them a suitable choice. The length of a thumb screw is almost always stated in millimetres (mm) and measured from just below the heads or shoulders to the opposite (flat) end of the threaded section.Please complete the purchase (or remove the quote – don't worry it's still available in My Account) before adding these additional items. In the UK, it is common to find thumb screws preinstalled on all manner of consumer electronics and domestic appliances. The range also features a black Polyamide (PA 6) Knurled Kbob, suitable for Socket Head Caps Screws, which easily assembles into the base of the knob. A true thumb screw or bolt can be distinguished from standard bolts or rivets by its large head, offering easier grip. A thumb knob may also be listed as a star knob, depending on the precise shape of the head designed for gripping by hand.

Bolts and Machine Screws - Metric - Westfield Fasteners Ltd

The other option made from Stainless Steel AISI 303 - the visible face find turned with a matte, shot-blasted finish. Knurled head thumb screws are one of the most common applications of this technique, which can be found on many types of stainless steel or nylon nuts, screws and bolts. Knurling is a widespread manufacturing technique for improving grip or torque force on a huge array of hand-installed components and fasteners.

Small thumb screws can be as short as 4mm or less from the shoulder to the end of the threading, while long thumb screws commonly extend to around 25-30mm (1 inch) and beyond. use in applications such as access panels, number plates and many anti-vandalism securing solutions. The threaded screw shaft itself may also be moulded from plastic resin or be made of metal and attached separately.