Left Hand Thread 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: 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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In stock
M4 x 0.70p Left Hand Thread Metric Coarse Stainless A2-70 G304 Hex Standard Nuts DIN 934As low as $0.255 each -
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In stock
M5 x 0.80p Left Hand Thread Metric Coarse Stainless A2-70 G304 Hex Standard Nuts DIN 934As low as $0.213 each -
Free shipping
In stock
M5 x 0.80p Left Hand Thread Metric Coarse Stainless A4-70 G316 Hex Standard Nuts DIN 934As low as $0.068 each -
Free shipping
In stock
M6 x 1.00p Left Hand Thread Metric Coarse Stainless A2-70 G304 Hex Standard Nuts DIN 934As low as $0.213 each -
Free shipping
In stock
M6 x 1.00p Left Hand Thread Metric Coarse Stainless A4-70 G316 Hex Standard Nuts DIN 934As low as $0.085 each -
Free shipping
In stock
M8 x 1.25p Left Hand Thread Metric Coarse Stainless A2-70 G304 Hex Standard Nuts DIN 934As low as $0.255 each -
Free shipping
In stock
M8 x 1.25p Left Hand Thread Metric Coarse Stainless A4-70 G316 Hex Standard Nuts DIN 934As low as $0.153 each
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.