Slotted spring pin
ISO 8752, ASME B18.8.2, ASME B18.8.4M SPIROL


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A slotted spring pin is a headless hollow cylindrical tube having a longitudinal slot down the entire length with chamfered or round ends to aid installation. This type of pin is produced to a controlled outside diameter slightly greater than the hole in which it will be installed. Compressed as it is installed, the pin applies continuous pressure towards the sides of the hole wall. The pressure provides tension in a radial manner to prevent loosening created by vibration or shock.
SPIROL Slotted Spring Pins manufactured to ISO 8752 (EN 28752), ASME B18.8.4M Type B (Metric), and ASME B18.8.2 (Inch) are available from stock.
DIN 1481 is interchangeable with ISO 8752 (EN 28752) except for a variation in length tolerance. We can provide special order slotted spring pins to ISO 13337 (DIN 7346) specifications. Also, we have the capability to provide special lengths, materials, tolerances, finishes, and packaging.
ISO 13337 (DIN 7346), lightweight slotted pins, are available made-to-order for volume applications.


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