Kozak Micro 
Adjusters
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All Categories > Imperial (US) Fine Adjustment Screws and Bushings > Fine Adjustment Screws (inch) > 1/4-100 TPI High-Vacuum Screws > View Items  

1/4-100 TPI High-Vacuum Screws

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Our 1/4-100 (100 TPI) high-vacuum compatible fine adjusters are available in lengths from 3/8" to 2.0" and are supplied with a 53 HRC .156" or .187" dia. tip and provide sub-micron sensitivity making them an ideal alternative to more costly micrometers where position indicated readout is not a necessity. The screws are made of 304 SS and are supplied with a ball tip (53 HRC) made of hardened steel. The screws are passivated and include a relief in the ball cavity which allows air to escape from under the ball-tip. Our fine adjusters are HEX driven and optional knobs and drive types are available. Thread class exceeds 3A. Additional lengths available by request.

Note: Kozak Micro cannot guarantee that our screws and bushings will be compatible with screws and bushings sold by other manufacturers.





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Item #

Thread Diameter

Thread Pitch

Screw Length Fractional

Ball Tip Diameter

Hex Drive

List Price

TS250-100-375-HV 1/4 in 100 TPI 3/8 in 0.156 in 3/32 in $17.13
TS250-100-500-HV 1/4 in 100 TPI 1/2 in 0.156 in 3/32 in $18.93
TS250-100-750-HV 1/4 in 100 TPI 3/4 in 0.156 in 3/32 in $21.40
TS250-100-1000-HV 1/4 in 100 TPI 1 in 0.156 in 3/32 in $21.40
TS250-100-1250-HV 1/4 in 100 TPI 1-1/4 in 0.156 in 3/32 in $24.78
TS250-100-1500-HV 1/4 in 100 TPI 1-1/2 in 0.156 in 3/32 in $25.90
TS250-100-1750-HV 1/4 in 100 TPI 1-3/4 in 0.156 in 3/32 in $27.03
TS250-100-2000-HV 1/4 in 100 TPI 2 in 0.156 in 3/32 in $28.15
TS250-100-375-AA-HV 1/4 in 100 TPI 3/8 in 0.187 in 5/64 in $17.13
TS250-100-500-AA-HV 1/4 in 100 TPI 1/2 in 0.187 in 5/64 in $18.93
TS250-100-750-AA-HV 1/4 in 100 TPI 3/4 in 0.187 in 5/64 in $21.40
TS250-100-1000-AA-HV 1/4 in 100 TPI 1 in 0.187 in 5/64 in $23.65
TS250-100-1250-AA-HV 1/4 in 100 TPI 1-1/4 in 0.187 in 5/64 in $24.78
TS250-100-1500-AA-HV 1/4 in 100 TPI 1-1/2 in 0.187 in 5/64 in $25.90
TS250-100-1750-AA-HV 1/4 in 100 TPI 1-3/4 in 0.187 in 5/64 in $27.03
TS250-100-2000-AA-HV 1/4 in 100 TPI 2 in 0.187 in 5/64 in $28.15
  Results 1 - 16 of 16 1 
MADE IN THE U.S.A