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When standard hex bolts demand a wrench you don't have on hand, these tee wing knob thumb screws let makers, machinists, and workshop builders tighten and release fasteners with bare fingers — no tools required. Designed for jigs, fixtures, enclosures, and equipment panels where frequent adjustment is part of the workflow, they eliminate the frustration of hunting for a spanner mid-project.
Each thumb screw pairs a carbon steel male-threaded shaft with a wide-diameter plastic T-knob head (D = 55 mm / approx. 2.17 in). Available in M8 and M10 thread sizes with shaft lengths ranging from 16 mm to 80 mm (approx. 0.63 in – 3.15 in), the metric sizing covers the most common workshop fastening scenarios. The knob diameter of 55 mm provides generous leverage for confident hand-tightening.
Typical use cases include securing woodworking jig fences and stop blocks, clamping 3D-printer bed leveling brackets, and fastening access panels on DIY CNC router enclosures — anywhere a hand-adjustable M8 thumb screw or M10 wing knob bolt is needed for quick-release metric fastening.
The 55 mm diameter T-knob provides wide, ergonomic grip surface so you can apply firm clamping force without any wrench or driver.
Available in both M8 and M10 standard coarse metric threads, covering the two most common workshop fastener diameters in a single product line.
Shaft lengths from 16 mm to 80 mm (0.63 in – 3.15 in) let you match the screw to your material stack thickness without compromise.
The threaded mandrel is steel for reliable tensile strength in clamping and fixture applications where plastic alone would strip or deform.
The T-knob head is molded plastic — lightweight, corrosion-resistant on the grip surface, and comfortable against bare hands during repeated adjustments.
Order 1, 3, 5, or 10 pieces per size so you can stock exactly what your project needs — from a single replacement to a full jig build.
| Thread Standard | Metric (ISO) |
|---|---|
| Thread Sizes Available | M8, M10 |
| Thread Pitch (M8) | 1.25 mm (standard coarse) |
| Thread Pitch (M10) | 1.5 mm (standard coarse) |
| Shaft Lengths Available | 16 / 20 / 25 / 30 / 35 / 40 / 45 / 50 / 60 / 70 / 80 mm |
| Knob Outer Diameter (D) | 55 mm (approx. 2.17 in) |
| Shaft Material | Carbon Steel |
| Knob Material | Plastic |
| Drive Style | Hand / Thumb (no tool required) |
| Head Style | T-Knob (Tee Wing) |
| Finish | See variant options |
| Pack Quantity | 1 / 3 / 5 / 10 pcs (select above) |
Match the thread size to your existing tapped hole or nut. M8 has an 8 mm nominal diameter with 1.25 mm standard coarse pitch; M10 has a 10 mm nominal diameter with 1.5 mm standard coarse pitch. If you're unsure, measure the inner diameter of your threaded hole or check the bolt that currently fits it.
The shaft length should be at least equal to the total thickness of the material(s) being clamped, plus enough thread engagement in the nut or tapped hole (typically 1–1.5× the thread diameter). For example, clamping 20 mm of material with an M8 thread into a nut would call for at least a 30 mm shaft.
The carbon steel shaft provides solid tensile strength suitable for workshop jigs, fixture clamping, and equipment panel fastening under hand-applied torque. They are not rated for high-vibration or structural load-bearing applications where a torqued hex bolt would be specified.
The plastic T-knob head is inherently corrosion-resistant and handles typical workshop humidity well. The carbon steel shaft may show surface oxidation if exposed to prolonged moisture; for outdoor or wet environments, consider applying a light coating of oil to the shaft threads.
Yes. The male-threaded shaft is standard metric coarse, so it is compatible with any ISO metric hex nut, T-nut, wing nut, or tapped hole of the matching M8 or M10 size. This makes them a direct hand-tightenable replacement for standard bolts in the same thread size.
The knob outer diameter is 55 mm (approx. 2.17 in). A larger knob diameter gives you more mechanical advantage when hand-tightening — meaning you can apply more clamping force with less finger effort compared to a smaller knob. The 55 mm size strikes a practical balance between grip leverage and compact footprint on a jig or panel.
For a single replacement or test fit, the 1-piece option is ideal. For a jig or fixture with multiple clamping points, the 3- or 5-piece packs offer better value. The 10-piece pack suits full builds or workshop stock replenishment. All packs ship as individual thumb screws of the same size and thread.
