146932 ⎘
Specially shaped heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool having one eccentric circular or polygonal recess or protrusion
Zero Gravity Fastener
#2HIGH TORQUE TRANSMISSION NUT AND DRIVING TOOL THEREFOR
#3SPHERICAL BIT AND FASTENER DESIGN
#4SELF-FEED BIT SYSTEM
#5Flexible head fasteners
#6Dual Head Screw
#7Socket for driving asymmetric fastener heads
#8Anti-theft screw part for attaching a wheel rim to a motor vehicle
#9Hollow metal screw and method of making
#10Hollow metal screw and method of making
#11Methods and apparatus for multi-dimensional asymmetrical fastening system
#12Hollow metal screw and method of making
#13Tamper-resistant fastener
#14Tool Assembly
#15DRIVING HEADS FOR FASTENERS
#16Tamper-resistant fastener and method and tool for use with same
#17Tamper-resistant fastener and method and tool for use with same
#18Torque-setting, tamper-resistant fastener and method and tool for use with same
#19Driving heads for fasteners