Flat Screw Tension

Flat Screw Tension

Quick look

  • Adjustment access: Requires a screwdriver, tension key, or even a coin in a pinch.1
  • Closing feel: Stable and predictable when tuned correctly, though not as slick as bearing or dial systems.1
  • Ideal use case: Everyday salon or barber work where durability and easy servicing matter more than bells and whistles.1,2
  • Care level: Moderate. Frequent micro-adjustments keep the screw from drifting as the pivot beds in.1,2

Why it matters

The flat screw is the workhorse pivot found on countless professional shears. With a simple threaded screw and washer stack, it balances cost, reliability, and fine-grain control. When you want hardware any sharpener can service—and you don’t mind using a tool for adjustments—this system delivers.

How it works

  • A flat-headed screw compresses the washer stack; tightening increases clamp force, loosening eases glide.1
  • Because there are no detents, you can dial in tension in minuscule increments, then lock it down.1
  • The simplicity makes it easy for technicians to replace parts or re-seat the screw during sharpening.2

Adjustment map

  1. Clean the pivot, add a drop of oil, and close the blades.2
  2. Use a coin or screwdriver to turn clockwise in tiny movements until a drop test stops at 35°–45°.1
  3. If hair folds, tighten slightly; if movement feels stiff, back off counter-clockwise and retest.1

Best for

  • Stylists and barbers who value rugged reliability and easy servicing.1
  • Shops where multiple pros share the same shear and need predictable tuning.1
  • Training environments that teach foundational tension control.2

Watch-outs

  • No tactile clicks—note your starting point before adjustments so you can return to it.1
  • Overtightening flattens the washer stack and accelerates wear.2
  • Screws can loosen with vibration; check tension daily in high-volume settings.1

Maintenance notes

Brush debris from the pivot nightly, oil lightly, and keep a screwdriver or supplied key at the station. During sharpening visits, ask the technician to inspect the washer stack and replace it if compression grooves appear.1,2

Related systems: Click Dial / Ratchet • Thumb / Butterfly

Sources

  1. Lucky Hare Shears – The Right Tension Makes All the Difference
  2. JP Scissors USA – Tension Adjustment Guide

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