0.5 TRAVEL #8-TPI ADJUSTMENT SCREWS

Siskiyou's 1/4-inch collet Hex Drive 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 available with 80 and 100 threads-per-inch pitches, producing industry-leading resolutions — 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.

Product Features

• 80 or 100 thread pitch
• Fits 1/4-inch collet diameter products
• Integrated travel lock
• Hex drive actuators
• Vacuum compatible versions available
• RoHS compliant→

Performance Specifications

• Travel/revolution:
• 100TPI: 254μm/rev
• 80TPI: 318µm/rev

• Minimum controllable motion* 
• 100TPI: 0.7μm
• 80TPI: 0.9µm

• Axial load 40lb

*MINIMUM CONTROLLABLE MOTION BASED ON 1° OF ROTATION