Atlas Buldex Assembly Screw 7.5X100 (1,000 Pieces)

Atlas Buldex Fixing Screw 7.5×100 mm – Pack of 1000

The Atlas Buldex Fixing Screw is a modern fastener designed for direct installation into substrates such as concrete, brick, aerated concrete, and natural stone without the need for a pre‑drilled hole in many cases. Its special thread design delivers exceptional holding power. With an outer diameter of 7.5 mm and an overall length of 100 mm, it provides a deep engagement zone for reliable fixing even under heavy loads. As an all‑in‑one component, it combines the function of anchor and screw in a single part — saving time and labour. Supplied in a pack of 1000, it offers cost‑effective stockpiling for large projects and high‑volume installation work.

Technical Specifications

• Brand: Atlas
• Product Type: Buldex / Special‑Thread Direct‑Fix Screw
• Diameter: 7.5 mm
• Overall Length: 100 mm
• Material: High‑Grade Steel
• Coating: Zinc‑Plated — corrosion resistant
• Thread Profile: Wide‑pitch special thread; advances directly into the base material
• Head Type: Countersunk / Flat Head — sits flush with the surface
• Drive: Torx / Star
• Installation Method: Pre‑drilling optional; suitable for direct fixing
• Pack Quantity: 1 Pack = 1000 Units

Applications

• Direct fixing to concrete and reinforced concrete walls
• Brick, hollow brick, and aerated concrete installations
• Natural stone, pumice, and similar masonry materials
• Securing timber, metal, and plastic structures to walls
• Roof, ceiling, and facade connections
• Installation of heating, ventilation, and plumbing systems
• Suspended ceilings, shelving, and heavy‑duty cabinet fixing
• High‑volume installation and large‑scale construction projects

Product Advantages

• All‑in‑One Design: Eliminates separate anchors and screws; fixing is completed with one part, simplifying stock management
• Wide‑Pitch Thread: Far coarser than conventional screws; advances without damaging the substrate, creates a broad contact surface, and delivers high tensile strength
• Standard 7.5 mm Diameter: Optimal thickness — neither too thick nor too slender — ideal for most fixing applications
• 100 mm Length: Provides deep penetration; passes through surface coatings, plaster, and mortar to reach sound, load‑bearing substrate
• Time & Labour Savings: Install directly without pre‑drilling or with a small pilot hole; saves minutes at every fixing point
• Zinc‑Plated: Rust‑resistant for indoor and sheltered outdoor use; stands up to corrosion
• Superior Load Distribution: More balanced load spread than separate anchor‑and‑screw systems; resists loosening under vibration and movement
• Economical Bulk Pack (1000): Perfect volume for construction firms and installation teams; reduces unit cost and project expenditure

Installation Guidelines

• Clean the wall surface; remove loose plaster, paint, and debris
• Optional pilot hole: 6 mm diameter in hard concrete; 5–6 mm in brick and aerated concrete
• Drive the screw slowly using a screwdriver or impact driver; do not force it — avoid damaging the substrate
• Stop when the head sits flush; do not over‑tighten — screw may break or masonry may crumble
• Check length against fixture thickness: minimum embedment of 60–70 mm into the wall is recommended
• Use multiple fixings at high‑load points to distribute weight across several locations
• Select stainless‑steel coated versions for external or permanently damp environments
• Re‑check tightness periodically; retighten gradually if any loosening appears

Frequently Asked Questions

What is Buldex — how does it differ from a standard anchor?
Buldex combines the functions of anchor and screw in one piece with a unique thread form. No separate anchor sleeve is inserted; it taps directly into the wall while delivering equal or superior holding power.

Do I need to 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 and natural stone; even then, no separate anchor is required.

How much load will it take?
Depends on substrate; a single screw in solid concrete typically provides 100–150 kg pull‑out resistance. Multiple fixings should be used for calculated loads and critical installations.

Can it be used outdoors?
Zinc plating withstands short‑term exposure. For facades and areas exposed to constant rain or moisture, choose the stainless‑steel variant.

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