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  MECHANICAL COMPONENTS: Torque Thumb Screws

vlier type a torque thumb screwsvlier type a torque thumb screw engineering drawing

Torque Thumb Screws
Vlier Torque Thumb Screws provide a variety of holding support including regular, reverse, variable and off-angle support. All Vlier torque thumb screws are provided with a checknut to prevent back-off during operation.

Regular Type A
Vlier Regular (Type A) Torque Thumb Screws offer numerous holding applications in building jigs, fixtures and special tooling.

Special Features


Torque Thumb Screws - Regular Type A
Part No. A B C D Estimated End
Force Pounds
T102 10-32 1-1/4 .47 7/8 8-15
T103 1/4-20 1-3/4 9-18
T1031 1/4-20 2-1/2 9-18
T103A 5/16-18 1-3/4 .47 7/8 10-20
T103A1 2-1/4
T103B 3
T104 3/8-16 1-3/4 .47 7/8 12-23
T1041 2-1/4
T105 3
T106 1/2-13 1-3/4 .53 1-1/8 13-25
T1061 2-1/4
T107 3
T1071 3-1/2
T108 5/8-11 1-3/4 .53 1-1/8 15-28
T109 3


vlier swivel pad torque thumb screwsvlier swivel pad torque thumb screw engineering drawing



Swivel Pad Type
Vlier Swivel Pad Torque Thumb Screws combine torque-limiting with a surface-protecting ball bearing swivel pad available in steel or Delrin to hold off-angle surfaces without marring or damage.



Torgue Thumb Screws - Swivel Pad
Part No. A B C D Estimated End
Force Pounds
Steel Pad Delrin Pad
TS103 NTS103 1/4-20 2-1/4 .47 7/8 9-18
TS103A NTS103A 5/16-18 2-1/4 .47 7/8 10-20
TS104 NTS104 3/8-16 2-1/4 .47 7/8 12-23
TS107 NTS107 1/2-13 3 .53 1-1/8 13-25


vlier inverted type b torque thumb screwsvlier inverted type b torque thumb screw engineering drawing



Inverted Type B
Vlier Inverted Torque Thumb Screws (Type B) apply reverse holding support ideal in limited space applications.



Torque Thumb Screws - Inverted Type B
Part No. A B C D Estimated End
Force Pounds
T125 1/4-20 1-3/4 7/16 7/8 9-18
T126 3/8-16 1-3/4 7/16 7/8 12-23
T127 1/2-13 1-3/4 1/2 1-1/8 13-25
T128 5/8-11 1-3/4 1/2 1-1/8 15-28


vlier tee head type c torque thumb screwsvlier tee head type c torque thumb screw engineering drawing



Tee Head Type C
Vlier Tee Head Torque Thumb Screws (Type C) are ideal where controlled end force and torque are required. Tee head fits part for forward or reverse motion.



Torque Thumb Screws - Tee Head Type C
Part No. A B C D E F Estimated End
Force Pounds
T150 1/4-20 1-3/4 7/16 7/8 .093 .184 13-25
T151 3/8-16 1-3/4 7/16 7/8 .174 .290 17-33
T152 1/2-13 1-3/4 1/2 1-1/8 .276 .396 19-35


vlier adjustable type d torque thumb screwsvlier adjustable type d torque thumb screw engineering drawing



Adjustable Type D
Vlier Adjustable Torque Thumb Screws (Type D) provide variable holding force with a simple hex wrench adjustment made to the head of the screw.



Torque Thumb Screws - Inverted Type D
Part No. A B C D Adjustable Torque
Inch Pounds		 Estimated End
Force Pounds
T198 3/8-16 1-3/4 21/32 1-3/16 3-6 10-125
T199 3/8-16 3 21/32 1-3/16 3-6 10-125
T200 1/2-13 1-3/4 21/32 1-3/16 3-6 10-125
T201 1/2-13 3 21/32 1-3/16 3-6 10-125



Checknuts
Part No. Thread Size A B C D
T102CN 10-32 3/4 7/32 1/2 5/32
T103CN 1/4-20 3/4 7/32 1/2 5/32
T103ACN 5/16-18 3/4 5/16 1/2 1/4
T104CN 3/8-16 3/4 5/16 1/2 1/4
T106CN 1/2-13 1 3/8 3/4 1/4
T108CN 5/8-11 1 3/8 3/4 1/4


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