SPIROL Series KP300 helical knurled pins are designed for high retention in plastic and metal assemblies, featuring a 30° helical knurl that rotates during insertion to increase surface contact and frictional engagement. Available in metric diameters from 2 mm to 6 mm and lengths up to 40 mm, these pins are made from low carbon steel or stainless steel, with plain or passivated finishes. Recommended hole diameters range from 2.00 mm to 6.08 mm, depending on nominal size. The chamfer is referenced at 0.15 mm to 0.4 mm. Length tolerance is ±0.25 mm. Retention is achieved by displacing host material into the knurl valleys, improving resistance to backout compared to straight knurled or straight pins.
"SPIROL® Series KP300 Helical Knurled Pins are have full-length straight knurls and their multi-crested design evenly distributes the retention force—making them the ideal pins for soft materials and thin cross-sections.
• Numerous points of contact with the host distributes the radial stress in a uniform fashion.
• On helical knurled pins, a 30° knurl causes the pin to rotate as it enters the hole creating more surface contact with the host. This results in higher friction forces, greater engagement and improved resistance to back out.
• The pin should always be harder than the host. If additional hardness is required to keep the knurls from shearing, the pins can be case hardened if .125” (3 mm) or larger.
"SPIROL® Series KP300 Helical Knurled Pins are have full-length straight knurls and their multi-crested design evenly distributes the retention force—making them the ideal pins for soft materials and thin cross-sections.
• Numerous points of contact with the host distributes the radial stress in a uniform fashion.
• On helical knurled pins, a 30° knurl causes the pin to rotate as it enters the hole creating more surface contact with the host. This results in higher friction forces, greater engagement and improved resistance to back out.
• The pin should always be harder than the host. If additional hardness is required to keep the knurls from shearing, the pins can be case hardened if .125” (3 mm) or larger.
| SPIROL | SPIROL | |
|---|---|---|
| Product Category | Industrial Pins | Industrial Pins |
| Product Number | Series KP300 | Series KP300 |
| Product Name | Helical Knurled Pins - Metric | Helical Knurled Pins - Inch |
| Pin Type | StraightDowel | StraightDowel |
| Bulk/Assorted Package | Bulk | Bulk |
| Design Units | Metric | English |
