M5 Knurled Thumb Nuts Thin Type – A1 Stainless Steel DIN 467 Hand Tighten Round Knob Fasteners 20mm OD x 5mm for 3D Printers, Machines & Instruments (Pack of 4)

• A1 STAINLESS STEEL – CORROSION RESISTANT, STRONG & VIRTUALLY NON-MAGNETIC Manufactured from A1 grade stainless steel, these M5 thin type knurled thumb nuts offer excellent resistance to corrosion, moisture, and chemical exposure, combined with good tensile strength and a clean machined finish. A1 stainless is also virtually non-magnetic — an important property for electronic, laboratory, and scientific instrument applications where magnetic interference must be minimised. Unlike plated steel alternatives, these nuts will not rust, pit, or discolour over time.
• DIN 467 THIN TYPE – LOW-PROFILE DESIGN FOR SPACE-CONSTRAINED ASSEMBLIES Precision-manufactured to the DIN 467 thin type standard with an overall height of just 5mm and a 20mm outer diameter, these nuts are specifically designed for applications where axial space is limited. The shallow profile allows secure hand-tightened clamping in tight panel gaps, instrument housings, 3D printer frames, and machine enclosures where the higher-profile DIN 466 variant would protrude or interfere with adjacent components.
• KNURLED GRIP SURFACE – FAST, SECURE TOOL-FREE TIGHTENING The precision diamond-knurled outer circumference provides a firm, confident grip for rapid hand tightening and loosening without any tools. The knurl pattern maintains reliable grip even with oily, damp, or gloved hands — making these ideal for high-cycle adjustment applications where speed and convenience matter. Through-hole threading allows full engagement along the entire stud or bolt length for maximum holding strength.
• PACK OF 4 – PERFECT FOR 3D PRINTERS, PANEL WORK & PRECISION INSTRUMENTS Each pack contains 4 x M5 DIN 467 thin type knurled thumb nuts — a practical quantity for 3D printer bed levelling systems, machine panel fastenings, electronic enclosures, laboratory and scientific instruments, jigs, fixtures, and any precision assembly requiring tool-free manual adjustment on M5 threaded bolts, studs, or rods. Compatible with all standard M5 x 0.8mm coarse pitch metric fasteners.

A1 stainless steel knurled thumb nuts / Bolt Knurled Nut Item Specifications: M3 Specifications Thread Diameter: 3mm Thread Pitch: 0.50mm Overall Diameter: 12mm Thin Type Overall Height: 3mm High Type Overall Height: 7.5mm M4 Specifications Thread Diameter: 4mm Thread Pitch: 0.70mm Overall Diameter: 16mm Thin Type Overall Height: 4mm High Type Overall Height: 9.5mm M5 Specifications Thread Diameter: 5mm Thread Pitch: 0.80mm Overall Diameter: 20mm Thin Type Overall Height: 5mm High Type Overall Height: 11.5mm M6 Specifications Thread Diameter: 6mm Thread Pitch: 1.0mm Overall Diameter: 24mm Thin Type Overall Height: 6mm High Type Overall Height: 15mm