3mm Grub Screws Cone Point (10 Pack) M3 x 5mm A2 Stainless Steel Socket Grub Screw/Screws Free UK Delivery

Product Information

There are various thread sizes and lengths and can be used for both industrial and personal purposes. Although uses may vary, as standard, these screws are fasteners for industrial equipment or machines which requires parts to be fixed onto a surface or together. When used the entire screw is encased in the material it is fastening without any exposed screw or bolt heads making them ideal for mechanical systems where metal surfaces rub together or to provide an aesthetic finish. One potential downside of flush-set grub screws, however, is that they can be quite difficult to remove once driven with full force to sit flush with or countersunk into the surface of the workpiece, especially if they do become corroded or the drive slot is damaged due to excessive torque going in. A good quality and reliable RS PRO socket screw ensures the fixing will remain strong and stable, whatever the application.

They’re almost always found being used in mechanical systems where two or more metal surfaces rub or press directly together, and where there isn’t room to fit a bolt or other type of protruding head between the two flush surfaces without limiting proper functionality or movement of the part(s). Because they often feature no protruding screw head in the traditional sense, true grub screws tend to be driven by means of a sunken internal recess at what is still generally referred to as the ‘head end’. Another common usage scenario involving grub screws or set screws is when attaching a pulley hub to a shaft - in this case, the end-point of the set screw pushes firmly against the shaft, possibly with some degree of elastic or plastic deformation of the part(s) at the point of contact, to provide increased grip. Although slotted varieties are sold for use with standard flat-head screwdrivers, they’re less common than hex, Torx or Allen internal-wrenching drives, because slotted varieties are inherently less robust and more easily deformed during insertion under high torque forces.Instead, they’re usually threaded right to the top, and are the same diameter all the way along their length, meaning that the grub screw can be fully driven into its hole to sit flush with (or even countersunk into, depending on the application) the workpiece. High heat resistance is also a big benefit, due to the way stainless steel is created, it can withstand an incredible amount of heat as opposed to a screw or socket made from standard steel.

Grub screw tend to be used in mechanical systems where there is not adequate space to fit protruding bolt heads or where multiple surfaces press or rub together. The internal-wrenching drive used to seat a headless grub screw can be either a hex socket (as in Allen keys - you’ll need to know the correct allen key sizes for grub screws, which can usually be found on the packaging), a star (Torx) socket, a square socket (known as a Robertson drive), or a regular slotted drive.This will depend on the brand and model, and again on the exact type of screw being used for any given application.