#8-TPI Series Adjustment Screw

Siskiyou's 1/4-inch collet hex drive or SoftTouch® TPI series adjustment screws are ideal for OEM and custom applications and are miniature versions of our 3/8-inch collet adjustment screws. They feature single-wrench-size adjustment and locking screw hex drives. The brass collet includes a built-in travel-lock mechanism to reliably hold device positioning.

TPI series fine and ultrafine adjustment screws are producing industry-leading resolutions and a cost-effective alternative to standard micrometers, where position readout is not a requirement. Adjustment screw contact tips are fitted with a hardened ball bearing for exceptionally smooth adjustment.

Our TPI adjustment screws are fitted with 'black' SoftTouch® drive-knob caps by default.

Product Features

• 80 or 100 thread pitch
• Fits 1/4-inch collet diameter products
• Split-clamp lock
• SoftTouch® actuators available
• Vacuum compatible versions available

Performance Specifications

• Travel: 318 or 254 µm/rev
• Minimum controllable motion*
  • 0.9µm (80 TPI versions)
  • 0.7µm (100 TPI versions)
• Axial load 40lb

*Minimum controllable motion*: BASED ON 1° OF ADJUSTMENT SCREW ROTATION

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