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Cage Nut

Cage 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, Stainless Steel, Zinc Silver Plated.

GRADES, SIZES AND THREADS

Grades stocked: Low Tensile Class 4.6, A2-70 G304.

Sizes: M8 (8mm), M6 (6mm), M5 (5mm), M10 (10mm), M12 (12mm), M4 (4mm), 3/16" (#10-24), 1/4".

Thread systems: Metric - Coarse, UNC / BSW - Coarse.

These cage 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.

View as Grid List

34 Items found

Set Descending Direction
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Cage nuts house a captive standard nut inside a sprung steel cage. The wings pinch together to snap into a square hole; once released, they spring out and lock the nut in place. The standard captive nut for server rack rails, cabinet mounting and panel work. We stock 34+ variants across the cage 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 - Cage Nut Metric Coarse Stainless G304 · Specs - Cage Nut Metric Coarse Zinc · Specs - Cage Nut UNC BSW Coarse Zinc Yellow

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

Filter by :
Filter By
Category
System of Measurement
  1. Metric 28 items
  2. Imperial 6 items
Size
  1. M4 (4mm) 2 items
  2. M5 (5mm) 5 items
  3. M6 (6mm) 6 items
  4. M8 (8mm) 7 items
  5. M10 (10mm) 4 items
  6. M12 (12mm) 4 items
  7. 3/16" (#10-24) 2 items
  8. 1/4" 2 items
  9. 5/16" 2 items
Size & Thread Pitch
  1. M4 x 0.70p Coarse 2 items
  2. M5 x 0.80p Coarse 5 items
  3. M6 x 1.00p Coarse 6 items
  4. M8 x 1.25p Coarse 7 items
  5. M10 x 1.50p Coarse 4 items
  6. M12 x 1.75p Coarse 4 items
  7. 3/16" (#10-24) x 24 TPI BSW 2 items
  8. 1/4" x 20 TPI BSW 2 items
  9. 5/16" x 18 TPI BSW 2 items
Material / Finish
  1. Stainless Steel 9 items
  2. Zinc Silver Plated 4 items
  3. Zinc Yellow Plated 21 items
Class / Grade
  1. A2-70 G304 9 items
  2. Low Tensile Class 4.6 25 items
Corrosion Protection Level
  1. Excellent 9 items
  2. Moderate 25 items
Overall Nut Height Range Guide
  1. 8.60 - 8.80mm 1 item
  2. 8.70 - 8.90mm 1 item
  3. 8.80 - 9.00mm 1 item
  4. 8.90 - 9.10mm 2 items
  5. 9.00 - 9.20mm 1 item
  6. 9.30 - 9.50mm 1 item
  7. 9.40 - 9.60mm 2 items
  8. 9.60 - 9.80mm 3 items
  9. 9.70 - 9.90mm 1 item
  10. 9.80 - 10.00mm 1 item
  11. 9.90 - 10.10mm 1 item
  12. 10.10 - 10.30mm 1 item
  13. 10.20 - 10.40mm 1 item
  14. 10.30 - 10.50mm 1 item
  15. 10.50 - 10.70mm 1 item
  16. 10.60 - 10.80mm 2 items
  17. 10.70 - 10.90mm 1 item
  18. 10.80 - 11.00mm 1 item
  19. 11.00 - 11.20mm 2 items
  20. 11.10 - 11.30mm 1 item
  21. 11.20 - 11.40mm 1 item
  22. 11.50 - 11.70mm 1 item
  23. 12.00 - 12.20mm 1 item
  24. 13.30 - 13.50mm 1 item
  25. 13.90 - 14.10mm 1 item
  26. 14.30 - 14.50mm 2 items
  27. 16.60 - 16.80mm 1 item
Panel Hole Size
  1. 9.50mm 17 items
  2. 12.80mm 13 items
  3. 14.00mm 4 items
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