Knurled Thumb Nuts M3–M6 — Stainless DIN 466 / DIN 467

FAS-THUMBNUT-SS-VAR-M3-THIN-TYPE-1-UNITS

£2.50

Nut Size

Pack Size

Why choose these Knurled Thumb Nuts

Our Knurled Thumb Nuts are precision-turned from stainless steel and finished with a deep diamond-pattern knurl on the outer wall, giving a firm grip for finger-tight installation and removal — no spanner or socket required. Ideal anywhere fittings need to be adjusted, removed and refitted frequently: jigs, fixtures, covers, model engineering, optical and electronic equipment, and bespoke joinery.

High type vs thin type

Two profiles are offered to suit different jobs:

High type (DIN 466) — a taller body that gives more thread engagement and a larger, easier-to-grip surface for higher hand torque. Use where the thumb nut is the primary fastener.
Thin type (DIN 467) — a low-profile body that sits flush against the work surface. Use where space is tight, or alongside a primary nut to act as a hand-adjustable locknut.

Sizes available

M3 / 3mm — light fixtures, electronics enclosures and instrument panels
M4 / 4mm — small fixtures, brackets and covers
M5 / 5mm — adjustable jigs, model engineering and trim
M6 / 6mm — general workshop and removable cover applications

Pack options

Each size and type is available as a 1-unit sample, or in packs of 2, 4 or 10. Use the variation selectors above to choose the exact combination you need.

Typical uses

Workshop jigs, fixtures and tooling — anywhere a hand-tight, no-tool adjustment is wanted
Equipment covers and access panels that need to be opened regularly
Optical, photographic and electronic equipment mounts
Model engineering, RC modelling and bespoke joinery

How to fit

Thread the nut onto a standard metric bolt or stud and tighten by hand using the knurled outer rim. For applications where the nut may loosen under vibration, pair a high-type thumb nut with a plain washer, or use a thin-type thumb nut as a finger-adjustable locknut against a primary nut.