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Timber Insert Nut

Timber Insert 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: Zinc Yellow Plated.

GRADES, SIZES AND THREADS

Grades stocked: Low Tensile Class 4.6.

Sizes: M6 (6mm), M8 (8mm), M10 (10mm), M4 (4mm), M5 (5mm).

Thread systems: Metric - Coarse.

Head styles: Flange Head, No Head.

STANDARDS

There is no standard for Timber Insert Nuts.

These timber insert 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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Threaded timber insert nuts (also called wood insert nuts) have long teeth or external threads that bite deep into timber as they're driven in. They provide a clean threaded socket in wood for repeated assembly — used in joinery, furniture, modular timber framing and any timber application that needs a re-usable threaded hole. We stock 10+ variants across the timber insert 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 - Threaded Wood Insert Nut Metric Coarse Zinc Yellow

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

Filter by :
Filter By
Category
System of Measurement
  1. Metric 10 items
Size
  1. M4 (4mm) 1 item
  2. M5 (5mm) 1 item
  3. M6 (6mm) 3 items
  4. M8 (8mm) 3 items
  5. M10 (10mm) 2 items
Size & Thread Pitch
  1. M4 x 0.70p Coarse 1 item
  2. M5 x 0.80p Coarse 1 item
  3. M6 x 1.00p Coarse 3 items
  4. M8 x 1.25p Coarse 3 items
  5. M10 x 1.50p Coarse 2 items
Thread Type
  1. Metric - Coarse 10 items
Material / Finish
  1. Zinc Yellow Plated 10 items
Class / Grade
  1. Low Tensile Class 4.6 10 items
Corrosion Protection Level
  1. Moderate 10 items
Head Type
  1. Flange Head 8 items
  2. No Head 2 items
Overall Nut Height Range Guide
  1. 9.30 - 9.90mm 2 items
  2. 11.00 - 11.60mm 1 item
  3. 12.50 - 13.00mm 2 items
  4. 13.80 - 14.30mm 1 item
  5. 14.30 - 14.80mm 1 item
  6. 14.80 - 15.30mm 1 item
  7. 17.70 - 18.20mm 1 item
  8. 18.40 - 18.80mm 1 item
Drive Type
  1. Internal Hex 10 items
Drive Size
  1. 4mm 1 item
  2. 5mm 1 item
  3. 6mm 3 items
  4. 8mm 3 items
  5. 10mm 2 items
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