Thumb Screws

This is the thin type of knurled thumb screw, as it has no shoulder beneath the head, unlike the high type of thumb screws. The large head diameter allows these fasteners to be easily adjusted to a precise tightness by hand. They are frequently used in situations where routine maintenance is required, as they are quicker and easier to fit and adjust in comparison to fasteners which require a driver.

Thumb Screws or Knurled Knob Screws are designed to be tightened and loosened by hand, without the need for a screwdriver or ratchet. The 'knurled' feature of the head makes this type of screw ideal for use where conditions can be challenging such as food preparation or clean room operations. Manufactured to DIN 464.

Slotted Thumb Screws or Slotted Knurled Knob Screws are designed primarily to be tightened and loosened by hand, without the need for a screwdriver or ratchet, but this version comes with a slot in the head for a standard slotted screwdriver. The 'knurled' feature of the head makes this type of screw ideal for use where conditions can be challenging such as food preparation or clean room operations. Manufactured to DIN 465.

Wing Screws (American Form) DIN 316 AF. These are designed to be used by hand and can give the user a more accurate adjustment. Employed in applications where the bolts need to be frequently tightened and loosened, negating the need for tooling. With large wings they are comfortable for continuous handling.

Knurled Thumb Nuts manufactured to DIN 466. These examples are the high profile thumb nuts and feature knurling for a more assured grip. Made from machineable A1 grade stainless steel, so benefitting from good anti-corrosion properties. Designed to be located and fitted by hand, even in more challenging applications and giving an attractive finish when used.

Popularly employed where frequent hand tightening and untightening of joints is required. To the American form, with less rounded, squared off wings. Similar to DIN 314/315. Please note that the wing span may vary between batches.

Popularly employed where frequent hand tightening and untightening of joints is required. To the German Form with slightly larger, rounded wings. To DIN 315. Please note that due to manufacturing limitations, all nylon variants of these items are only "similar to" and not "in absolute accordance with" the standard specified.

Popularly employed where frequent hand tightening and untightening of joints is required. To ASME B18.6.9.

Popularly employed where frequent hand tightening and untightening of joints is required. To ASME B18.6.9.