QNB3004 Round Thru Knob, 1/4"-20, 5Pk

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Product Overview

Introducing the Round Black Fastener Knobs by POWERTEC.


  • INCLUDES: (5) Round Thru Knobs (black)
  • FUNCTION: Provides safe, secure hand-grip – allowing you to position, tighten or hold your jigs, t-track assemblies and other equipment in place - Anywhere that a 1/4"-20 or 5/16"-18 thru hole knob is required
  • CONVENIENT: Perfect tool-less replacement knob and be a great alternative to using nuts and other less secure fasteners
  • APPLICATIONS: Ideal for clamping jobs, t-tracks, hand tools, feather boards, saw fences, drill press, woodworking jig and fixture kits
  • PREMIUM DESIGN: Features a black, thermoplastic construction with an ergonomic round grip, matte black finish with a molded-in insert for a tight and snug fit


These black round knobs provide you a multi-functional toolless fastener that gives you optimal control with a secure, textured grip for your applications. The user friendly build allows you to utilize a secure hand-grip while maximizing your adjustment and tightening control. It allows you to streamline your workflow, while enhancing your clamping results with a simple twist and turn.


Premium Construction and Design

The knob is made with high quality, durable polymer plastic and flaunts an ergonomic design that is comfortable to secure and twist with the hand. The threaded 1/4"-20 or 5/16"-18 knob thru hole features a metal insert that produces a snug fit, and won’t crack or strip due to over-tightening.


Commonly Used Applications:

  • T-track assemblies
  • Hand tools
  • Feather boards
  • Table saw fences
  • Drill presses
  • Woodworking jigs and fixtures
  • and many more!



  • 1/4"-20, see POWERTEC QNB3004
  • 5/16"-18, see POWERTEC QNB3005




WARNING: Cancer and Reproductive Harm -


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