Straight Sided Splines are mechanical components designed to transmit torque between a shaft and a mating hub while allowing axial movement. Unlike involute splines, these splines have parallel, straight-sided teeth, offering a strong mechanical interface that is ideal for sliding fits in high-load applications.
At FloFit Enterprises, our straight-sided splines are precision-machined for tight tolerances, repeatability, and custom fit solutions for a wide range of industrial applications.
Straight Tooth Flanks – Ideal for non-rotational axial movement
Efficient Torque Transmission – Suitable for high-load conditions
Precision Machined – Ensures consistent engagement and minimal backlash
Multiple Fit Classes – Custom internal and external splines available
Durable Material Options – Carbon steel, alloy steel, stainless steel
Heat-Treated & Surface-Finished – For wear resistance and long life
Gearboxes & Transmissions
Automotive Drive Shafts
Aerospace Couplings
Marine Propulsion Systems
Agricultural Equipment
Industrial Power Trains
Spline Type: Straight Sided (Parallel Spline)
Number of Teeth: Customizable (based on torque & application)
Material: EN8 / EN24 / SS 304 / SS 316 / Hardened Steel
Standards: ANSI, DIN, or Custom
Fit Types: Clearance, Sliding, or Interference
Surface Finish: Machined / Ground / Nitrided / Phosphated
Application Load: Medium to Heavy Duty
Q: What's the main difference between straight sided and involute splines?
A: Straight splines have flat flanks and are ideal for axial sliding under load, while involute splines provide better centering.
Q: Can you manufacture custom internal splines?
A: Yes, we offer both internal and external splines tailored to your dimensions and fit.
Q: Are these splines heat-treated for wear resistance?
A: Absolutely. We offer hardened and ground options for durability and precision.
Q: What tolerances can you maintain?
A: We machine to tight tolerances suitable for high-performance mechanical systems.
Custom Spline Solutions
Precision Fit and Long Life
Wide Range of Materials & Sizes
Engineering Support for Design Optimization
Fast Turnaround with Quality Assurance