Drop In Anchor YZP

Product Introduction

• Standard Name: Drop-In Anchor (YZP).

• Other Names: Internal Expansion Anchor, Internal Expansion Bolt, Pre-embedded Internal Expansion Anchor, Yellow Zinc-Coated Internal Expansion Anchor.

• Product Definition: A post-installed internal expansion anchor specifically designed for concrete. Installation requires pre-drilling a hole and inserting the anchor sleeve. Striking the matching core rod causes its wedge-shaped base to expand the sleeve, generating powerful expansion friction and mechanical interlocking within the hole walls for high-load-bearing fixation. Its “Drop-In” feature suits applications requiring flush-mounted bolts or connections below the surface.

Drop In Anchor YZP Key Features

• Yellow Zinc Plated (YZP): Passivated with yellow chromate, providing moderate corrosion protection

  (superior to ordinary white zinc). The surface is golden yellow, aesthetically pleasing, and wear-resistant,

  suitable for indoor or slightly humid environments.

• Internal Expansion Design: The cylindrical anchor body features internal threads and a tapered expansion

  groove at the bottom. It expands and secures using a specialized installation tool, providing high holding

  power and pull-out resistance.

• Material and Strength: Commonly made of carbon steel, high-strength design, suitable for medium to

  heavy-duty fixing on solid substrates such as concrete.

• Various Specifications: Internal threads M6-M20, lengths 25-80mm, requires a specialized installation tool.

• Advantages: Concealed installation, strong holding power, reusable threads, economical and aesthetically

  pleasing, but requires a specialized expansion tool.

  

Working Principle

• Drilling and Insertion: Drill a hole of the appropriate diameter and depth in the concrete, and drop the

  anchor into the hole (head flush).

• Expansion Fixing: Using a specialized setting tool, tapping or rotating expands the anchor body wall at

  the bottom conical section, gripping the hole wall tightly.

• Threaded Application: After expansion, a permanent internal thread is provided for bolt tightening;

  a yellow zinc plating enhances corrosion resistance.

• Load Distribution: The expansion force is evenly distributed, providing high pull-out strength;

  the principle involves mechanical expansion and frictional grip.

Product Applications

• Ceilings and Piping: Secure hangers, light fixtures, or ventilation ducts to concrete ceilings for a

  concealed and aesthetically pleasing look.

• Building Construction: Install railings, brackets, or curtain wall systems, providing a flush surface.

• Industrial Installations: Secure equipment bases or guardrails to concrete floors.

• Residential and Commercial: Secure shelves, signage, or cabinets for an aesthetically pleasing fit in

  visible locations.

• General Anchoring: Any project requiring high-strength internal thread anchoring.