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M3x20mm Carbon Steel Step Hand Screw Flat Knurled Head Thumb Bolts 10pcs
Descriptions:
- M3x20mm Round thumb screw with flat knurled head style.
- Knurled head provides extra grip for manual tightening. Usually found on thumb screws, a knurled surface on the head gives a better gripping surface, making it easier to tighten or loosen fasteners manually.
- Thumb screws are designed to be tightened and loosened by hand. Tools not necessary for tightening or loosening
- Knurled Thumb Screws are installed with your fingers and are used to hold light covers in place and other ornamental products.
d | L | L2 | dk | k | k1 | d2 | ds |
M3 | 20mm | 26mm | 11mm | 6mm | 3mm | 5mm | 6mm |