146936 ⎘
Specially shaped heads of bolts or screws for rotations by a tool causing slipping of the tool in loosening rotation, i.e. disabling unscrewing unless another tool is used
METHODS AND APPARATUS FOR ADJUSTING A SPRING PRE-LOAD
#2Security nut and security bolt
#3FASTENERS
#4Anti-loosening bolt and nut assembly structure
#5Methods and apparatus for adjusting a spring pre-load
#6Historical marker repair components and methods
#7Mounting element having pressure limitation
#8METHODS AND APPARATUS FOR ADJUSTING A SPRING PRE-LOAD
#9Semi-left-hand-thread-removal screw
#10Methods and apparatus for adjusting a spring pre-load
#11Screw drive design
#12Screw drive design
#13Method for manufacturing a bolting part, tool for implementing the method, and device for tightening and loosening such a bolting part
#14Easily Installed and non-defacing security latch
#15Fastening structure
#16Anti-theft device for bicycle lock