Your customers may require modifications to the standard fasteners you purchase from us. With Kanebridge’s Drop-Shipping service, you can ship your parts directly to the service provider that can perform the work you require. This includes:
It can be beneficial to integrate a screw or bolt to a component without the immediate use of a corresponding nut. This can be accomplished by removing a certain amount of material from the externally-threaded part—often in the area immediately below the head of the fastener (which can entail creating an unthreaded section of the shank). Done properly, the fastener can then hold its place within a component—even allowing the screw or bolt to freely spin in that location—without the need for a nut to hold it in place.
Drilling a hole crosswise—whether through the head or the threaded portion—allows for wire to be drawn through two or more screws to prevent loosening. The wire can then be twisted in a way so that should the threads begin to loosen, the wire would hold the fastener in place. Kanebridge carries a line of Cross-drilled Fillister head machine screws in Steel and Stainless.
When an internally threaded hole is required (such as at the top of a hex cap screw), a hole is drilled, then threads are either rolled or cut to the proper specifications.
The turning process uses a lathe to rotate a fastener while a cutting tool engages with the screw. Milling is performed by rotating the cutting tool against the fastener work piece. These operations are often done to modify a screws point so as to prepare a pilot (unthreaded) point or to taper the point in an ogive shape.
A cross-recessed or six-lobe recessed screw can have a pin inserted into the recess to give it tamper-resistant qualities. With such modifications, a regular insert bit or screwdriver can not be used to remove the fastener.
To provide sufficient overhead clearance, it can be necessary to reduce the head height of a fastener. More subtle shaving can be required to correct minor imperfections created by the way material flowed in the cold-forming process. Special tooling is required to do this while maintaining sufficient strength of the fastener.
To shorten a fastener properly—to achieve the desired length tolerance and create a point that will easily engage with a threaded hole or nut—requires precise machining.
While knurled head screws and nuts are already available from Kanebridge’s inventory, it can be necessary to knurl the top section of the unthreaded shank of a cap screw or bolt. This creates projections that interfere with the side walls of the receiving opening of the host member to resist the fastener from turning.
Cylindrical narrow cavities of a desired depth can be added to the head, threaded shank or close to the point of a fastener.
A patch is the application of a precise amount of nylon on a fastener’s threads to provide resistance in turning, making the fastening self-locking.
A fastener is drilled horizontally and the hole is plugged with nylon. When such a fastener engages with a threaded hole or nut, the nylon pellet compresses on two sides 180-degrees opposite each other, providing holding power without distorting the threads.
A vertical slot is milled into the screw or bolts threads and a strip of nylon is inserted into the slot. When the fastener is tightened, the force of the nylon generates greater metal-to-metal engagement within the fastening, creating a self-locking action.
Similar to the Slotting/Stripping process but using a strip that includes a lightweight metal with applied nylon. Once set in place and engaged with a nut or threaded hole, the insert applies greater external prevailing torque than internally, thus preventing unwanted loosening of the fastener.
Epoxy resins or curing acrylics can be applied to threads that remain inert until engagement with the mating thread occurs.
Elastic gasketing materials can be applied to threads to create a seal to prevent the passage of most chemicals and fuels. The applied seal actually performs, in part, as a lubricant to prevent damage to the threads that would compromise the fluid-tight sealing action.