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Structural K0 Nut

Structural K0 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: Galvanised.

GRADES, SIZES AND THREADS

Grades stocked: High Tensile Class 8.

Sizes: M12 (12mm), M16 (16mm), M20 (20mm), M22 (22mm), M24 (24mm), M27 (27mm), M30 (30mm), M33 (33mm).

Thread systems: Metric - Coarse.

STANDARDS

K0 AS 1252:2016.

These structural k0 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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Hex structural K0 AS1252:2016 nuts have three identifying lines on the top to mark them as structural nuts. Originally designed to mate with structural bolts in K0 HSFG (High Strength Friction Grip) assemblies, they're also used with high-tensile bolts wherever AS1252 structural-grade nuts are specified. We stock 9+ variants across the structural k0 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 - Structural Nut Metric Coarse Galvanised K0 AS12522016

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

Filter by :
Filter By
Category
System of Measurement
  1. Metric 9 items
Size
  1. M12 (12mm) 1 item
  2. M16 (16mm) 1 item
  3. M20 (20mm) 1 item
  4. M22 (22mm) 1 item
  5. M24 (24mm) 1 item
  6. M27 (27mm) 1 item
  7. M30 (30mm) 1 item
  8. M33 (33mm) 1 item
  9. M36 (36mm) 1 item
Size & Thread Pitch
  1. M12 x 1.75p Coarse 1 item
  2. M16 x 2.00p Coarse 1 item
  3. M20 x 2.50p Coarse 1 item
  4. M22 x 2.50p Coarse 1 item
  5. M24 x 3.00p Coarse 1 item
  6. M27 x 3.00p Coarse 1 item
  7. M30 x 3.50p Coarse 1 item
  8. M33 x 3.50p Coarse 1 item
  9. M36 x 4.00p Coarse 1 item
Material / Finish
  1. Galvanised 9 items
Class / Grade
  1. High Tensile Class 8 9 items
Corrosion Protection Level
  1. Excellent 9 items
Overall Nut Height Range Guide
  1. 12.00 - 13.60mm 1 item
  2. 15.93 - 17.15mm 1 item
  3. 20.00 - 21.30mm 1 item
  4. 22.00 - 23.30mm 1 item
  5. 24.00 - 25.30mm 1 item
  6. 27.00 - 28.30mm 1 item
  7. 30.00 - 32.00mm 1 item
  8. 32.00 - 33.00mm 1 item
  9. 36.00 - 39.00mm 1 item
Spanner Size
  1. 21mm 1 item
  2. 27mm 1 item
  3. 32mm 1 item
  4. 36mm 1 item
  5. 41mm 1 item
  6. 46mm 1 item
  7. 50mm 1 item
  8. 54mm 1 item
  9. 60mm 1 item
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