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M4 x 0.70p x 24 Metric Coarse Black Rubber Nut Large Flange Round Open Smooth Grips 8.5-15
| BUY MORE. SAVE MORE. | ||||
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| Price for each item | Subtotal | % savings | ||
| Buy 1 | Buy 1 | $5.50 each | $5.50 | - |
| Buy 2 + | Buy 2 - 4 | $4.00 each | $8.00 | 27.27% |
| Buy 5 + | Buy 5 - 9 | $2.00 each | $10.00 | 50.00% |
| Buy 10 + | Buy 10 - 19 | $1.40 each | $14.00 | 30.00% |
| Buy 20 + | Buy 20 - 29 | $1.00 each | $20.00 | 28.57% |
| Buy 30 + | Buy 30 - 49 | $0.90 each | $27.00 | 10.00% |
| Buy 50 + | Buy 50 - 99 | $0.70 each | $35.00 | 22.22% |
| Buy 100 + | Buy 100 - 199 | $0.65 each | $65.00 | 7.14% |
| Buy 200 + | Buy 200 - 499 | $0.60 each | $120.00 | 7.69% |
| Buy 500 + | Buy 500 - 999 | $0.55 each | $275.00 | 8.33% |
| Buy 1000 + | Buy 1000 + | $0.50 each | $500.00 | 9.09% |
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Savings % based on buy qty vs previous buy qty |
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In Stock
Other Sizes in Range
Delivery Information
Orders under $30 (Bulky items sent as parcel for FREE)
- Aust Post UNTRACKED Letter – FREE
- Parcel – From $8
- Express – From $10
- Click and Collect – 2hrs
Orders over $30
- Parcel – FREE
- Express – From $10
- Click and Collect – 2hrs
5% Off
10% Off
15% Off
| System of Measurement | Metric |
|---|---|
| Product | Rubber Nut |
| Head Type | Large Flange Head |
| Body Type | Round Open |
| Outside Body | Smooth |
| Industry Size | M4 (8.5-15mm grip) |
| Size | M4 (4mm) |
| Size & Thread Pitch | M4 x 0.70p Coarse |
| Thread Pitch | 0.70mm |
| Thread | Coarse |
| Thread Direction | Right Hand |
| Corrosion Protection Level | Excellent |
| Finish | Black Rubber |
| Body Material | Themoplastic EPDM |
| Head Diameter (c) | 11.00mm |
| Nut Width (a) | 7.70mm |
| Material Grip Range (g) | 8.50 - 15.00mm |
| Flange Thickness (h) | 1.20mm |
| Internal Nut Material | Brass Body |
| Nut Height Overall (b) | 24.00mm |
| Recommended Hole Size | 8.00mm |
| Closest size in imperial | 5/32" |
| Brand | Bolt and Nut Australia |
Dimensional data is a guide only. Tolerance differences exist between brands and batches
About Rubber Nuts
Rubber Nuts are a different kind of nutsert: an elastomer body with an internal brass thread, installed by tightening a bolt. The rubber compresses radially against the panel and clamps the assembly while providing a watertight seal and vibration damping. Used in marine, automotive, HVAC, and electrical enclosures where a metal nutsert would let water through or transmit vibration. Lower load capacity than metal: choose for sealing and damping rather than high clamp force.
Recommended use Marine fittings, automotive body panels, HVAC ducting, outdoor electrical enclosures, sealed instrument cases - anywhere a panel penetration needs to stay watertight or vibration-damped. Pair with a stainless bolt for full outdoor / wet-service corrosion resistance.
Frequently Asked Questions
Where a metal nutsert relies on a nutsert tool to deform the body and clamp behind the panel, a rubber nutsert relies on tightening a bolt to compress the rubber radially. As the bolt is tightened, the rubber bulges out against the back of the panel and seals the hole. The compromise: lower clamp strength than metal, but full sealing and damping.
The bolt itself does the install - that simplicity is a big part of the appeal of rubber over metal. The brass internal thread carries the bolt load; the rubber carries the seal and vibration damping. Keep tightening until the assembly is firm and the rubber has visibly bulged behind the panel. Overtightening will spin the brass insert in the rubber, so back off the moment the assembly is snug. If you also need install tools for metal nutserts elsewhere in the same job, see our Tools range for nutsert guns to suit M3 to M12 metal nutserts.
This is the main reason to choose rubber over metal: anywhere a metal nutsert would let water through the panel (marine, automotive, HVAC, outdoor electrical enclosures) the rubber nutsert seals the hole as part of the installation.
The grip range for this rubber nutsert is 8.50 - 15.00mm, which is the panel-thickness window the rubber will clamp on. Outside the rated grip range the rubber won't seal or won't compress correctly.
Typical rubber nutsert hole sizes are larger than equivalent metal nutsert holes because the rubber body is thicker. Always check the manufacturer's hole-size table for the exact dimension.
Bolt length should engage the brass insert without bottoming out. Stainless bolts pair well with rubber nutserts in marine and outdoor environments: the rubber is already waterproof, the stainless bolt completes the corrosion package.
See the head marking chart and full strength table on our site for the full conversion table.
Don't use for structural fastening. The rubber will creep under load over time and the joint will loosen. For sealed but load-bearing penetrations, combine a metal nutsert with a separate gasket or use a sealing nutsert.
Material & Coating
Rubber An elastomer (rubber) body bonded around an internal brass thread. The two materials work together: the brass thread carries the bolt load and stays dimensionally stable, while the rubber body compresses radially against the panel to form a watertight seal and absorb vibration.
Important Not for structural fastening. The rubber will creep under sustained load, so the joint loosens over time. For sealed but load-bearing penetrations, use a metal nutsert with a separate gasket, or a purpose-built sealing nutsert.
Benefits of Rubber
- Brass internal thread - corrosion-resistant, accepts a standard metric bolt, will not rust if water reaches the assembly.
- Rubber body - watertight seal around the panel hole and around the bolt shank, plus vibration damping that no metal nutsert provides.
- No specialist nutsert tool required - installed with a standard bolt + spanner. The bolt itself crushes the rubber against the panel.
- Lower clamp strength than a metal nutsert. Pick rubber when sealing and damping matter more than maximum bolt-down load.
Class Metric fasteners are classified as class 2, 4.6, 8.8, 10.9, 12.9, 14.9. See the head marking chart and full strength table.
Thread Pitch & Terminology
Thread Pitch (Metric) Metric fasteners measure thread pitch as the distance between thread peaks, expressed in millimetres. Every nutsert we stock is metric coarse - the default series that matches standard metric bolts and machine screws. This product has a 0.70mm coarse pitch, meaning the peaks are 0.70mm apart.
How is the Length of a Nutsert Measured?
Nutsert Length Every nutsert is measured the same way: overall, head included - from the top of the head to the end of the body. The rule holds for every head style we stock, whether it is a large flange, small flange or countersunk head.
Length alone does not pick the right nutsert. The Grips range in the product name (for this product: 8.50 - 15.00mm) states the panel-thickness window the body clamps on - match that to your panel thickness and the body length looks after itself.
Resources
For full technical data including key product information, range and a CAD drawing, see our Technical PDFs library.
Convert between metric and imperial sizes, gauge to mm, decimal to fraction and TPI to pitch with our measurement conversion calculators.
Pricing & Delivery
Includes GST, a Tax Invoice and Free Standard Delivery anywhere in Australia.
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Technical data Researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately.
Measurements Sizes are taken from supplier catalogues or hand-measured and should be used as a guide. Minor variation between batches is normal. Stock is sourced from various suppliers, so differences may exist between batches in thread length, markings, appearance or finish.
Product Photos & PDF Data Sheets Represent the product type, not exact size. PDFs are a reference guide only. Specifications may change without notice.
If you see any problems with any of our specifications or you require additional information please contact us.
Delivery
Weigh less than 500grams
Exceptions: Tools, Kits, Bulky items = Sent as a parcel with tracking
Small orders that fit into the slot of your Letterbox are sent:
FREE with Aust Post Letter delivery with NO TRACKING and delivery between 4-12 business days
Or
Select a Quicker delivery service
- $7.00 Parcel Delivery 2-7 business days
- From $12.00 Express Delivery 1-4 business days
- From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days
Or
Click & Collect - Warehouse pickup
Unit 9, 93 Rivergate Place, Murarrie, QLDPlace your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday
Weigh more than 500grams
Included is orders under $30 but weigh more than 500grams or wont fit in the slot of your letterbox
Including Large and Bulky heavy orders are sent:
FREE as a Parcel Delivery WITH TRACKING and delivery between 2-7 business days
Or
Select an Express delivery service
- From $12.00 Express Delivery 1-4 business days
- From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days
Or
Click & Collect - Warehouse pickup
Unit 9, 93 Rivergate Place, Murarrie, QLDPlace your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday
Further delivery information can be found on our Delivery page
Supplier Details
| MPN | 43RN424 |
