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Acme Nut
Find the spanner that fits it snugly, then measure the hole. Our nut identification chart lists every metric and imperial nut we stock side by side, sorted by spanner size.
The fastest check is the male thread: the right nut spins onto its bolt by hand with no force. Identify the bolt size and pitch first with our bolt and screw guide, and the nut follows.
MATERIALS AND FINISHES
Available finishes: Plain Black Uncoated.
GRADES, SIZES AND THREADS
Grades stocked: High Tensile Grade 5.
Sizes: 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4".
Thread systems: Acme.
These acme nuts pair with our bolts, washers and threaded rod. See our Technical Resources page for tightening torques and spec PDFs.
WHY AUSTRALIA TRUSTS BOLT & NUT
With 15+ years selling fasteners online from Brisbane, we hold over 25,000 stock lines and 200 million pieces — 98.75% of online orders placed before 1pm leave same day. Save more as you buy more — we offer up to 13 price breaks plus 3 spend-tier discounts. Read our customer reviews or get in touch if you need help picking the right product.
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ACME nuts have a trapezoidal-profile thread engineered for linear motion and power transmission under high load. Used in clamps, vises, screw jacks, linear actuators and the lead screws of lathes, milling machines and presses. The wide thread base distributes load across a larger surface than a standard V-thread. We stock 7+ variants across the acme nut range.
TECHNICAL RESOURCES
Need help identifying your nut? See our guide to identifying the size of your nut.
Key charts and specification sheets: Specs - ACME Hex Nut Plain Black
For full sizing data and standards, see our Technical PDFs library.
