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mankk 40PCS Expansion Screw and Petal Nut Kit M4 M5 M6 M8 Jack Car Metal Screw Petal Shape Metal Nut Anchor Screw for Hollow Wall Iron Skin Plasterboard M-175-40PCS

mankk 40PCS Expansion Screw and Petal Nut Kit M4 M5 M6 M8 Jack Car Metal Screw Petal Shape Metal Nut Anchor Screw for Hollow Wall Iron Skin Plasterboard M-175-40PCS

$16.58 USD
$16.58 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.

About this item

  • Jack Nut Threaded Insert Petal Nuts is a fastener specially designed for fixing thin plates. Its unique petal-like structure will automatically expand when stressed, thus providing a firm fixing effect, which is widely used in thin plates, hollow pipes and other scenes.
  • 【Reliable Material】The expansion screw & petal nuts are made of high-quality carbon steel, the surface is galvanized, which has the effects of rust prevention and corrosion prevention, especially in wet or acidic environment. The galvanized layer is malleable, and can be processed by cold stamping and bending without damaging the coating, and can be used for a long time indoors and outdoors.
  • 【Easy Installation】The petal-shaped design structure is adopted. When in use, only one pliers (such as elbow pliers) is needed to clamp the bottom of the nut, so that the sleeve part of the nut begins to expand like a petal, and then the screw is tightened, and the nut will further expand and finally be firmly fixed on the thin plate.
  • 【Wide Application】Petal Nuts Set is widely used in automobile license plate fixing, steel structure shell plate connection, plastic chassis assembly and so on. It is especially suitable for fixing objects on thin iron plates, square pipes and other materials.
  • 【Package include】M4*20,M4*25,M5*25,M6*25, 4 sizes,10 in each size, a total of 40pcs.Put it in a transparent storage box for easy carrying and taking.

Overview

  • Size: M4
  • Color: Silver
  • Material: Carbon Steel
  • Brand: mankk
  • Fastener Type: Screw, Nut

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Ethan Miller — Seattle, Washington

    GripReady has a practical selection of climbing essentials that fits well into my regular gym routine. The items I ordered were simple to use, easy to organize, and useful for preparing before each session. Everything arrived as expected, and I would shop here again.

  • ⭐⭐⭐⭐⭐

    Olivia Turner — Austin, Texas

    I picked up a few training and hand-care accessories, and they have been convenient additions to my climbing bag. The products feel straightforward without unnecessary features, and the store made it easy to find items for both training and post-session care.

  • ⭐⭐⭐⭐⭐

    Ryan Cooper — Denver, Colorado

    I like that GripReady brings together different climbing essentials in one place. The products I received worked well for my home training setup and indoor climbing sessions. They were easy to understand, practical to store, and suited my everyday routine.

  • ⭐⭐⭐⭐⭐

    Mia Bennett — Portland, Oregon

    The climbing accessories I ordered have been useful for keeping my gear more organized and my sessions better prepared. The selection feels focused on products climbers can actually use regularly, from training tools to small gym-bag essentials.

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FAQ

What types of products does GripReady sell?

GripReady offers products for bouldering, indoor climbing, grip and finger training, hand and skin care, climbing chalk, chalk bags, hangboards, climbing holds, recovery tools, and gear organization. Please review each product page for its intended use and specifications.

How much does shipping cost?

We generally charge a flat shipping fee of $6.90 per order. The final shipping charge will be displayed at checkout before you complete your purchase. Customs duties, import taxes, and other international fees are not included unless specifically stated.

How long does order processing take?

Orders are generally processed within 1–3 business days, Monday through Friday, excluding public holidays. Processing may take up to 5 business days during peak periods, inventory checks, or payment verification.

How long will delivery take?

Estimated delivery after shipment is approximately:

United States: 5–10 business days

International destinations: 10–20 business days

Delivery times are estimates and may vary because of carrier delays, customs processing, weather, holidays, or other circumstances outside our control.

How can I track my order?

When tracking information becomes available, we will send a shipping confirmation email containing your tracking number or tracking link. Tracking may take several business days to show its first update after a shipping label is created.

Can I change or cancel my order?

Please contact us as soon as possible at housbirdcempo@gmail.com. We cannot guarantee changes or cancellations once an order has entered processing, been packed, or shipped. A request is confirmed only after you receive written confirmation from GripReady.

What is your return policy?

Eligible products may be returned within 30 calendar days after delivery. Products must generally be unused and returned with their original packaging, accessories, labels, and instructions. Opened hand-care products, used climbing equipment, customized items, and products marked as final sale may not be eligible. Please review our Return & Refund Policy before sending anything back.

What should I do if my order arrives damaged, defective, or incorrect?

Contact housbirdcempo@gmail.com as soon as reasonably possible. We recommend reporting the issue within 7 calendar days after delivery. Include your order number and clear photographs of the product, packaging, shipping label, and any visible damage. Please keep all packaging until the issue is resolved.

How do I know whether a product is suitable for my climbing setup?

Review the product dimensions, intended use, mounting method, weight limit, compatibility information, manufacturer instructions, and safety warnings before purchasing. Products must not be used for belaying, fall arrest, rescue, anchoring, or other life-support purposes unless they are expressly designed and certified for that specific use.

How can I contact GripReady customer support?

Email us at housbirdcempo@gmail.com with your name, order number, and a clear description of your question. We aim to respond within 1–2 business days, Monday through Friday, excluding public holidays and unusually busy periods.

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