Special Expansion Bolts, Hollow Wall Lizard Tube Expansion Nails

Product Description

Working Principle 

When installing, drill a hole in the target material like hollow brick or plasterboard first. Insert the bolt or screw into the hole. As you tighten it, the expansion part of the bolt or the special structure of the screw (such as the hollow gecko tube) expands and presses against the inner wall of the hole, creating friction to hold it firmly in place.

Specification

Applications

1.Building Interior: Commonly used for fixing light fixtures, pictures, small shelves on hollow brick walls or plasterboard partitions in houses, offices, etc.
2.Aircraft Interior: Applied to install some small decorative items or lightweight components on the interior panels made of plasterboard in aircraft cabins.

Features:
1.Specialized Design: Specifically designed for hollow brick and plasterboard to ensure good fixing performance on these materials.
2.Easy Installation: The operation process is relatively simple with common tools like screwdrivers or wrenches.
3.Good Fixing Strength: Can provide stable fixation to support the items attached to them.

Size Description

	Wall hole diameter	Screw length	L	Optimal range of applicable hollow substrate thickness	Limiting range of applicable hollow substrate thickness	D
4*21	8	27	21	2-4	1-5	4
4*32	8	39	32	5-7	3-12	4
4*38	8	45	38	12-14	10-16	4
4*46	8	53	46	19-21	16-24	4
4*52	8	60	52	22-24	18-28	4
4*60	8	67	60	37-39	35-40	4
5*37	10	45	37	8-10	6-13	5
5*52	10	60	52	12-14	3-16	5
5*65	10	72	65	26-28	15-32	5
5*80	10	88	80	40-43	28-45	5
6*37	12	45	37	8-10	6-13	6
6*52	12	60	52	12-14	3-16	6
6*65	12	72	65	25-27	14-32	6
6*80	12	88	80	40-42	28-45	6
8*37	14	45	37	8-10	6-13	8
8*52	14	60	52	12-14	3-16	8
8*65	14	72	65	25-27	14-32	8
8*80	14	88	80	40-42	28-45	8

Product Details

The product is made from high-quality raw materials, ensuring product quality from the very beginning.

The process is mature, with the factory having many years of industry experience and possessing a well-established production process.

The quality can be assured. We strictly control the quality of each production stage of the products from the very beginning.

Installation steps

1. Based on the outer diameter of the purchased pipe, make a hole in the wall. 

2. Insert the expansion screws into the drilled hole, and slightly tighten the head screws.

3. The special tool clamps the head of the cap screw, and pulls the tool.

4. Through the pulling force of the tool, the casing expands and clamps the first layer of solid material.

5. After the casing is completely fixed, unscrew the middle screw. The screw should pass through the fixing object and be tightened into the previously drilled hole.

Company Profile

Hebei Lingke Metal Products Co., Ltd

Our company's specialty lies in anchor bolt metal products and fasteners, including ceiling anchors, hit anchors, nail drive anchors, wedge anchors, sleeve anchors, drop-in anchors, fix bolts, couplers, hillside washers, turnbuckles, wire rope clips, hex bolts and nuts, threaded rods, stud bolts, l anchor bolts, wooden screws.

FAQ

Q: What's the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.