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When you need a fastener you can tighten and release by hand — without reaching for a wrench — standard hex bolts slow you down. Makers, woodworkers, machine operators, and workshop builders who frequently adjust jigs, fixtures, guards, or panels need a thumb screw that delivers real clamping force without sacrificing convenience. These tee wing knobs thumb screws with disc pressure plate are designed exactly for that workflow.
Each assembly combines a three-wing plastic knob with a carbon steel threaded bolt and a flat disc pressure plate. Thread sizes span M6, M8, and M10 (metric). Bolt lengths range from 16 mm (approx. 0.63 in) to 100 mm (approx. 3.94 in). Head (knob) diameters are available in 36 mm, 55 mm, and 65 mm to match different grip-force requirements. The disc pressure plate distributes clamping load evenly across the work surface, reducing surface marking.
Typical applications include securing router table fences and stop blocks, locking 3D printer bed leveling knobs, adjusting CNC spoilboard clamps, fastening machine guards on drill presses and band saws, and hand-tightening enclosure panels in electronics or woodworking jigs. The metric thread sizing makes these tee wing knobs thumb screws a direct fit for most metric-threaded inserts and T-nuts used in workshop fixtures.
| Product Type | Tee Wing Knob Thumb Screw with Disc Pressure Plate |
|---|---|
| Thread Standard | Metric (ISO) |
| Thread Sizes Available | M6, M8, M10 |
| Bolt Length Range | 16 mm – 100 mm (approx. 0.63 in – 3.94 in) |
| Knob Head Diameter | 36 mm / 55 mm / 65 mm |
| Knob Material | Plastic (PA / Nylon-type, see variant options) |
| Bolt Material | Carbon Steel |
| Pressure Plate Material | Carbon Steel |
| Finish | See variant options |
| Thread Pitch | Standard metric coarse (see variant options to confirm) |
| Drive Style | Hand-tightened (no tool required) |
| Pack Quantity | 1 PCS / 5 PCS / 10 PCS |
| System of Measurement | Metric |
Match the thread size (M6, M8, or M10) to your existing threaded hole or T-nut. Then select a bolt length that allows the disc pressure plate to sit flush against your workpiece with the knob fully tightened. As a general rule, bolt length should equal the material thickness plus any standoff, with 5–10 mm of thread engagement remaining. Choose a larger knob head (55 mm or 65 mm) when you need more torque by hand; the 36 mm head suits tighter spaces.
These tee wing knobs thumb screws are designed for hand-tightened clamping loads typical in woodworking jigs, machine guards, and fixture work. The carbon steel bolt provides adequate tensile strength for tool-free applications. They are not intended as a replacement for torqued structural fasteners. For applications requiring precise clamping force, use a torque-limiting tool or consult your fixture design specifications.
The flat disc pressure plate spreads clamping load over a larger contact area compared to a bare bolt end, which significantly reduces point-load marking. On softer materials such as MDF, pine, or aluminum extrusions, light surface impressions may still occur under high hand-tightening force. For sensitive surfaces, place a thin rubber or felt pad between the disc and the workpiece.
The bolt and disc plate are carbon steel, which offers moderate corrosion resistance suitable for typical indoor workshop environments. For humid, wet, or outdoor conditions, consider applying a light coat of machine oil or anti-rust spray to the steel components. If corrosion resistance is a primary requirement, contact us to confirm whether a zinc-plated or stainless variant is available for your size.
These fasteners use standard metric coarse thread pitch: M6 × 1.0 mm, M8 × 1.25 mm, and M10 × 1.5 mm are the most common coarse pitches for these diameters. Please verify compatibility with your threaded insert or T-nut before ordering, as fine-pitch variants exist in the market. If you need confirmation for a specific application, contact us before purchasing.
Yes. These tee wing knobs thumb screws are widely used for 3D printer bed leveling (M6 is a common bed-leveling thread size), CNC spoilboard clamps, router table fences, and similar applications where frequent hand adjustment is needed. Confirm the thread size matches your printer or machine's existing hardware before ordering.
Order 1 PCS for a single replacement or to test fit before committing to a larger quantity. Choose 5 PCS for small fixture builds or when outfitting a single machine with multiple adjustment points. The 10 PCS pack offers the best per-unit value for full fixture builds, production jigs, or when stocking a workshop with a standard size. All packs ship the same size and specification — only the quantity differs.
