Free Running Insert: M4 x 0.7, 4 mm OAL MPN:1084-4CN040S

Captive screws, which are available in standard inch sizes, are designed to be installed permanently within a predrilled hole without the need for a nut or other fastener. The #4-40 size captive screw features a slotted head drive and rounded top, made of stainless steel, with an uncoated finish. It is ideal for various applications in industries such as electronics, medical devices, automotive, and aerospace where a secure yet reusable fastening solution is required without the need to disassemble the assembly. This type of captive screw is frequently used by professional technicians, engineers, machinists, and manufacturers to fasten components during production or repair processes.