Atlas Buldex Assembly Screw 7.5X120 (1,000 Pieces)

Atlas Buldex Fixing Screw 7.5×120 mm – Pack of 1000

The Atlas Buldex Fixing Screw is an all‑in‑one fastener designed for direct installation into substrates such as concrete, brick, aerated concrete, and natural stone without the need for a separate wall plug. Its special wide‑pitch thread delivers exceptional holding power. With a diameter of 7.5 mm and an overall length of 120 mm, it passes through thick plaster, cladding, and mortar layers to grip deeply into sound, load‑bearing base material. The one‑piece design cuts installation time and simplifies stock management. Supplied in a pack of 1000, it offers an economical solution for large‑scale projects and high‑volume fixing work.

Technical Specifications

• Brand: Atlas
• Product Type: Buldex Direct‑Fix Screw
• Diameter: 7.5 mm
• Overall Length: 120 mm
• Material: High‑Quality Carbon Steel
• Coating: Zinc‑Plated — Corrosion‑Resistant
• Thread Profile: Special wide‑pitch external thread; advances directly into the substrate
• Head Type: Countersunk — sits flush for a neat finish
• Drive: Torx
• Installation: With optional pilot hole or direct fixing
• Pack Quantity: 1 Pack = 1000 Units

Applications

• Fixing to concrete walls with thick plaster or surface cladding
• Heavy‑duty connections to brick, hollow brick, and aerated concrete
• Natural stone, pumice, and similar masonry applications
• Securing timber, metal structures, and heavy cabinets
• Roof, ceiling, and facade fixings
• Heating, ventilation, and plumbing system installations
• Suspended ceilings, racking, and heavy‑duty equipment
• High‑volume installation and large‑scale construction projects

Product Advantages

• 120 mm Length: 20 mm longer than the 100 mm version; easily penetrates thick plaster, insulation, and facing layers to reach solid base material
• All‑in‑One Design: Eliminates the need to source and insert separate wall plugs; one part completes the fix — saves time and simplifies stockholding
• Wide‑Pitch Thread: Creates a broader contact zone than conventional screws; advances without damaging the masonry, delivering high tensile and break‑out strength
• Standard 7.5 mm Diameter: Balances strength and compatibility perfectly; matches most common pilot‑hole sizes and fixing applications
• Zinc‑Plated Finish: Rust‑resistant for indoor and sheltered outdoor use; maintains performance and appearance long‑term
• Countersunk Head: Sits flush with the surface; no protruding edge for a clean, safe, and neat finish
• Fast Installation: Pilot hole can be kept small or omitted entirely; saves seconds at every fixing point — a significant advantage in high‑volume work
• Cost‑Effective 1000‑Pack: Delivers a favourable unit price on large contracts; materially reduces overall project costs

Installation Guidelines

• Clean the fixing surface; remove loose plaster, paint, and mortar debris
• Pilot‑hole guide: 6 mm diameter in hard concrete; 5 mm in brick/aerated concrete; can be installed without pre‑drilling in soft aerated concrete
• Drive the screw at low speed; do not force it to avoid damaging the substrate
• Stop when the head seats flush; do not over‑tighten — screw may shear or the wall may crumble
• Aim for minimum embedment of 70–80 mm into solid material; drill deeper where facing layers are thick
• Use multiple fixings under heavy loads; distribute weight across symmetrically spaced points
• Select the stainless‑steel coated version for permanent damp or outdoor exposure
• Check tightness periodically; retighten gradually if loosening appears

Frequently Asked Questions

How does this differ from the 100 mm model?
It is 20 mm longer; the preferred choice for walls with thick plaster, insulation, or facing cladding. It achieves deeper, more secure anchorage in the structural substrate.

Must I drill a pilot hole?
Can be driven directly into soft aerated concrete and hollow brick. A 6 mm pilot hole is recommended for hard concrete; even then, no separate plug is required.

What is the load capacity?
A single fixing in solid concrete typically provides 110–160 kg pull‑out resistance. Multiple fixings should be used for engineered or heavy loads.

Suitable for outdoor use?
Zinc plating withstands limited outdoor exposure. The stainless‑steel variant is recommended for locations subject to constant rain or moisture.

How is pricing structured?
Price listed per pack of 1000 units. Contact us for quantity discounts and alternative lengths.