M6 Knurled Thumb Screws Hand Tighten Grip Knob Bolts Adjustable Long 6mm - 100mm

These are M6 screws with a standard 1.0 mm coarse pitch, conforming to ISO metric thread standards. They are compatible with any M6-tapped hole, M6 T-nut, or M6 threaded insert machined to the same standard.

Select a length that provides at least 1× the thread diameter (6 mm) of engagement in your tapped material — more for softer materials like aluminum or plastic. For example, if you are fastening a 10 mm panel to a T-nut in a 20 mm extrusion, a 30–35 mm screw typically gives adequate engagement. Add up your panel thickness plus the required thread engagement depth to determine the minimum length needed.

These thumb screws are designed for hand-tightened, frequently adjusted connections — such as access panels, jig fences, and removable guards — rather than high-torque structural joints. Because they are tightened by hand, clamping force is lower than a tool-tightened bolt. For joints requiring significant preload or vibration resistance, consider adding a locking nut or using a tool-driven fastener instead.

Anodizing creates an aluminum oxide layer that is harder than bare aluminum and resists oxidation in typical indoor workshop and light outdoor environments. The finish holds up well to handling, mild moisture, and most shop chemicals. Prolonged exposure to strong acids, alkalis, or salt spray can degrade anodizing over time. For harsh outdoor or marine environments, contact us to confirm suitability.

Yes. The M6 × 1.0 mm thread mates directly with standard M6 T-nuts (commonly used in aluminum extrusion systems such as 20-series and 30-series profiles), M6 threaded inserts for wood or plastic, and any M6-tapped hole machined to ISO metric tolerances. No adapters are required.

Yes. Each variant (length + color combination) is sold individually as 1 PCS. To order multiple lengths or colors, simply add each desired variant to your cart as a separate line item. There is no minimum order quantity per variant.

The knurled grip head diameter is typically 12–16 mm depending on the specific variant. If your application has a tight clearance around the head, contact us to confirm the exact head diameter for the length you need before ordering.