📦 48PCS Jack Nuts Assortment M4/M5/M6/M8 – Petal Nuts for Tin & Billboard
📦 48PCS Jack Nuts Assortment M4/M5/M6/M8 – Petal Nuts for Tin & Billboard
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📦 48PCS Jack Nuts Assortment M4/M5/M6/M8 – Petal Nuts for Tin & Billboard
A Stronger Hold in Thin, Hollow Materials
Create secure threaded fixing points in thin metal, hollow plastic, aluminum alloy, cardboard panels, billboards, and other lightweight substrates.
🔧 Ordinary Screws Struggle in Thin Panels
Thin sheet materials often provide too little depth for standard screw threads. Screws may spin, loosen, pull through the panel, or concentrate pressure around the mounting hole.
🛡️ Petal Expansion Creates a Secure Backside Grip
During installation, the jack nut body expands behind the panel to create a wider clamping area. This provides a dependable threaded fixing point where access is available from only one side.
The expanding petals spread clamping pressure across a larger surface, helping reduce localized stress, unwanted movement, and damage to thin fastening materials.
⚖️ Ordinary Fasteners vs. Petal Jack Nuts
✨ Built for Reliable Thin-Panel Fastening
High-grade carbon steel provides the hardness and tensile strength required for dependable fastening and resistance to deformation.
The zinc-plated surface helps limit contact with air and moisture for improved resistance to rust and everyday corrosion.
The body expands behind the panel to improve clamping force, reduce slippage, and create a secure internal thread.
M4, M5, M6, and M8 sizes are separated inside the storage case for quicker identification and easier project preparation.
🔩 Why Choose This 48-Piece Jack Nut Kit?
👷 A Practical Assortment for Repairs and Assembly
Useful for DIY users, mechanics, maintenance teams, installers, fabricators, and technicians who regularly work with thin or hollow structural materials.
Cabinets, brackets, signs, panels, and fixtures
Covers, frames, housings, and machine panels
Thin body panels, accessories, and brackets
Enclosures, equipment cases, and control panels
🧩 How to Install
📐 Product Details
| Product Type | Expansion jack nuts / petal nuts with matching screws |
| Material | High-grade carbon steel |
| Surface Finish | Zinc-plated for improved corrosion resistance |
| Recommended Thickness | Thin hollow substrates measuring approximately 0–5 mm |
| Package Quantity | 48 pieces in an organized compartment storage case |
| Size Assortment | M4×20: 15 pcs; M5×25: 15 pcs; M6×25: 12 pcs; M8×30: 6 pcs |
| Compatible Materials | Thin metal, aluminum alloy, iron sheet, hollow plastic, cardboard, billboards, and hollow panels |
⭐ Built Around Real Fastening Needs
Expanding petals create a wider holding area behind materials that cannot support ordinary screw threads.
Four commonly used sizes make it easier to match small repairs, equipment assembly, and larger fixing tasks.
Wider load distribution helps reduce concentrated pressure and unwanted deformation around the mounting hole.
The divided storage case keeps the assortment visible, portable, and ready for the next repair or installation.
❓ Frequently Asked Questions
📏 What material thickness is this kit designed for?
The jack nuts are intended for thin, hollow substrates measuring approximately 0–5 mm. Confirm the selected size is compatible with your panel and installation requirements.
🔩 Which sizes are included?
The 48-piece assortment includes 15 M4×20 pieces, 15 M5×25 pieces, 12 M6×25 pieces, and 6 M8×30 pieces.
🧰 Do I need a special installation tool?
A compatible jack-nut setting tool is recommended for controlled, even expansion. The installation tool is not listed as part of this 48-piece nut-and-screw assortment.
💧 Are the jack nuts rustproof?
The zinc-plated finish improves resistance to moisture and everyday corrosion. It does not make the hardware permanently rustproof in every outdoor, marine, or chemical environment.
