Button Socket Cap Screws, Nylon Patch/Pellet
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A button head socket cap screw features a low-profile, dome shaped head with a hexagon shaped drive. Many projects will utilize a button socket screw for the sleek appearance and moderate strength. They are also an excellent choice in applications with space constraints, offering a low clearance profile. Fasteners Etc. Inc. offers button socket cap screws in black oxide coated steel with a nylon patch and nylon pellet. Both nylon patch and pellets are designed to prevent the screw from loosening; however, they differ in functionality and application. Both options are heavily utilized in applications with vibration or movement.
A nylon pellet is a small, cylindrical insert made of nylon. It is a separate component added to the threading or head of the screw. As the screw is installed and tightened, the nylon distorts causing friction and further securing the hold. Screws with nylon pellets may be multi-use so long as the user inspects the nylon to ensure no damage has occurred.
A nylon patch is a coating applied to the screw’s threading during manufacturing. There are after-market options for thread locking material that can be applied on site; however, this option increases labor costs and installation time to allow for dry-time. The nylon patches are often colorful to help the user easily identify the nylon patch from the bolt threads. It succeeds by creating friction between the bolt threads and base material. Screws with nylon patches may be multi-use; however, the patch will wear over time and requires inspection.
A nylon pellet is a small, cylindrical insert made of nylon. It is a separate component added to the threading or head of the screw. As the screw is installed and tightened, the nylon distorts causing friction and further securing the hold. Screws with nylon pellets may be multi-use so long as the user inspects the nylon to ensure no damage has occurred.
A nylon patch is a coating applied to the screw’s threading during manufacturing. There are after-market options for thread locking material that can be applied on site; however, this option increases labor costs and installation time to allow for dry-time. The nylon patches are often colorful to help the user easily identify the nylon patch from the bolt threads. It succeeds by creating friction between the bolt threads and base material. Screws with nylon patches may be multi-use; however, the patch will wear over time and requires inspection.