• Material: Carbon steel, zinc plated; chromoly steel.
• Special Sizes: Available in volume.
Tell us the dimensional target, material preference, and application constraints. We'll help match or develop the right solution.
Ask for Custom SupportJACK SCREW JSI are threaded adjustment devices for setting position, spacing, alignment, or preload in chassis members, fixtures, brackets, actuator supports, and fabricated machine assemblies. The adjustment is useful where controlled mechanical positioning is preferred to improvised shims. Select thread size, right- or left-hand configuration, engagement, access, load direction, and the locking method for the service condition.
Jack screws provide a compact threaded method to set position, spacing, or preload in fabricated chassis and linkage assemblies. Use matched threads and maintain adequate engagement through the adjustment range.
The adjuster format is useful for leveling, aligning, or positioning machine fixtures, brackets, and actuator supports before locking the final setting. Check access, axial force, and the load path through the support.
Jack screws can replace improvised shims in custom fabrication by providing controlled mechanical adjustment. Validate thread strength, lockout method, and resistance to vibration for the complete assembly.
Used in motorsport chassis and fabricated control systems that need fine adjustment and durable steel or chromoly hardware.
A good choice for OEM supply programs standardizing on inch male-male threaded adjusters across multiple sizes.
Useful in fabricated control assemblies where packaged hex size, total length, and thread engagement need to be consistent.
A JSI jack screw is a male-male adjuster used to fine-tune length or preload in linkage and threaded control assemblies.
Standard materials include carbon steel with zinc plating and chromoly steel for heavier-duty fabrication requirements.
Start with the required thread size, then confirm thread length, total length, hex size, and hex height for the assembly.
Yes. The series supports right-hand and left-hand thread patterns depending on application requirements.
Thread size, thread length, total length, and the wrench hex dimensions are the primary fitment points for jack screw selection.
Yes. Special sizes are available in production volume for OEM or repeat fabrication programs.
