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Left Hand Thread Nut

Left Hand Thread Nut
Not sure what nut you have?
Two ways to identify it - whichever is easier with what is in front of you.
1If you have the 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.

Open the nut identification chart ›

2If you have its bolt

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.

Open the bolt and screw guide ›

MATERIALS AND FINISHES

Available finishes: Stainless Steel.

GRADES, SIZES AND THREADS

Grades stocked: A2-70 G304, A4-70 G316.

Sizes: M5 (5mm), M6 (6mm), M8 (8mm), M10 (10mm), M12 (12mm), M16 (16mm), M4 (4mm), M20 (20mm).

Thread systems: Metric Coarse - Left Hand Thread.

STANDARDS

DIN 934.

These left hand thread 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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Left-hand thread hex nuts have a reversed thread — they tighten counterclockwise and loosen clockwise. Used in applications where rotation of the mating shaft would unscrew a standard right-hand nut: pedals, fans, cutting tool spindles and propeller shafts. We stock 15+ variants across the left hand thread 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 - Left Hand Thread Nut Metric Coarse Stainless G304 DIN934 · Specs - Left Hand Thread Nut Metric Coarse Stainless G316 DIN934

For full sizing data and standards, see our Technical PDFs library.

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