33% Off
Pinnacle Hardware

Pinnacle M4 Black Ruspert Nylon Lock Nut 10 Pack Vibration-Resistant Fastener

★★★★★
69 reviews · 692+ sold
$5.36 $8.04 -33% OFF
You save: $2.68
Price reduced — was $8.04
7 people bought this in the last week
10 people have this in their cart right now
🔥 88% claimed — only 5 left at this price!
Only 5 left!
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Australian Stock
Last purchased 13 minutes ago by someone in Brisbane
Ships in 1-2 business days Australia-wide delivery
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The Pinnacle M4 black Ruspert nylon lock nut 10 pack uses a nylon insert to grip the bolt thread and resist loosening caused by vibration. The black Ruspert finish adds corrosion resistance, making these hex nuts suitable for indoor and outdoor assemblies.

  • Thread size: M4
  • Type: Nylon insert lock nut (hex)
  • Finish: Black Ruspert
  • Pack size: 10

Lock nuts are ideal for machinery, frames, fixtures and any joint exposed to movement or vibration where a standard nut might work loose over time.

More about this product

The Pinnacle M4 Black Ruspert Nylon Lock Nut 10 Pack is a set of hex nuts designed to prevent loosening due to vibration, featuring a nylon insert for added security. The pack consists of ten hex nuts equipped with nylon inserts that help prevent loosening caused by vibration. These lock nuts feature a Black Ruspert finish, providing corrosion resistance suitable for both indoor and outdoor applications.

Questions & Answers

How many lock nuts come in the pack?

The pack contains 10 M4 nylon insert lock nuts.

How do they stop loosening?

A nylon insert inside the nut grips the bolt thread, resisting loosening caused by vibration.

What thread size do they fit?

They suit M4 threaded bolts.

Are they corrosion resistant?

Yes. The black Ruspert finish provides corrosion resistance suitable for indoor and outdoor use.

Standard Shipping Australia-wide
Ships in 1-2 business days from our Australian warehouses
30-Day Returns
Change your mind? Return within 30 days for a full refund. Item must be unused and in original packaging.

Customer Reviews

4.3 ★★★★☆ 66 reviews
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✓ Fast Delivery ✓ Great Quality ✓ As Described Verified Purchases
R
Ryan S. 📍 Wollongong NSW
★★★★★
3 weeks ago
✓ Verified Purchase

Highly recommend

Really impressed with the Pinnacle M4 — it looks and feels more premium than the price suggests. Delivery was quick and packaging kept everything safe. No issues at all.

S
Sophie H. 📍 Geelong VIC
★★★★★
1 month ago
✓ Verified Purchase

Great quality

Good quality and arrived ahead of schedule. Very happy.

D
Daniel P. 📍 Hobart TAS
★★★★★
1 month ago
✓ Verified Purchase

Brilliant Aussie deal

Been buying Pinnacle Hardware gear for years and this is one of their better ones. The Pinnacle M4 quality is excellent — everything was included and setup took under 10 minutes. Had it at the door in Brisbane within 2 days. My son immediately claimed it for himself so I had to order another. 10 out of 10.

C
Chloe D. 📍 Darwin NT
★★★★★
1 month ago
✓ Verified Purchase

No complaints at all

Exactly as described. Quick shipping. Would buy again.

M
Michael C. 📍 Townsville QLD
★★★★★
1 month ago
✓ Verified Purchase

Works perfectly out of the box

Was exactly what I needed for the price I paid. Arrived well packaged and was easy to set up straight away. Already recommended it to a friend who is also thinking of getting one.

H
Hannah P. 📍 Cairns QLD
★★★★★
1 month ago
✓ Verified Purchase

Worth every cent

Did a lot of comparison shopping before buying here and I have no regrets. Best price I found anywhere and delivery was fast — 3 days to Melbourne. Product feels genuinely premium, not cheap at all. Packaging was solid too, box arrived in perfect shape. Will be back for more.

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