Quality External Thread Bolts for Heavy-Duty Curtain Wall Installations

• Customization: Available
• Application: Concrete Anchoring
• Finish: Zinc Plated
• Grade: 4.8
• Head Style: Flat Head
• Material: Steel
• Standard: ANSI
• Type: Bonded Anchor Bolt
• Applicable Industries: Construction Industry
• Strength Level: 4.8
• Use: Standard
• Whether to Support Customization: Support
• Transport Package: Container
• Specification: 1-100
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

The external thread anchor bolt is an indispensable fastening connector, crafted to achieve stellar mechanical fastening and anchoring through its intricate dance with the nut, connected parts, or substrate via meticulously processed threads on its outer surface. Let us delve into a rich, multi-dimensional exploration of this essential component:

• Structural Design

Screw Body: Adorned with threads on its outer surface, the screw body typically boasts a circular cross-section, further categorized into coarse and fine threads. Coarse threads, with their pronounced profile and wider pitch, offer swift installation and robust strength. In contrast, fine threads shine with their refined tooth profile and narrower pitch, offering excellent self-locking performance and formidable anti-loosening capabilities, ideal for scenarios subject to impact, vibration, or necessitating precision adjustments.

Head Type: Diverse head forms cater to varied usage scenarios and installation needs. The hexagonal head excels in ease of tightening with a wrench and ensures even force distribution. Meanwhile, the sinking head achieves a smooth, aesthetically pleasing surface post-installation. The hexagonal head's compact nature makes it perfect for operations in constrained spaces.

Length Specifications: Spanning from mere millimeters to several meters, these bolts cater to a spectrum of needs. Shorter ones are perfect for thin plate connections, whereas longer variations are ideal for deep hole anchoring, effectively bridging materials or structures of varied thicknesses.

• Materials and Properties

Material Selection: The choices are aplenty, with carbon steel, stainless steel, and alloy steel as the frontrunners. Carbon steel, with its economic advantage and robust strength, suits general environments. Stainless steel, lauded for its corrosion resistance, thrives in corrosive settings like humidity, acidity, or alkalinity. Alloy steel, enriched with specific alloying elements, boasts enhanced strength, toughness, and temperature resistance, adeptly meeting specialized working condition demands.

Mechanical Properties: Boasting high tensile and shear strength, these bolts easily withstand significant axial tensile and transverse shear forces, ensuring the steadfast stability of connections or anchoring parts. Some external thread anchor bolts also offer commendable toughness and ductility, adept at absorbing external impacts and averting brittle fractures.

• Working Principle

Conventional Connection: When paired with a nut, this dynamic duo sees the nut rotating to traverse axially along the anchor bolt's external thread. This generates a potent tightening force, clamping multiple components together, harnessing friction and self-locking between threads to preserve connection reliability.

Anchor Connection: To anchor in concrete or other substrates, begin by drilling a hole, inserting the bolt, and applying torque to expand the bolt, squeezing the substrate, or use chemical agents for a firm substrate bond. Whether via mechanical grip or chemical bonds, this process ensures a steadfast connection between the part and the substrate.

• Application Areas

Construction: From concrete structure connections to steel structure installations and curtain wall fixations, these bolts are the backbone of construction projects. Whether connecting steel beams to concrete columns or anchoring decorative panels on building exteriors, they ensure building integrity and safety.

Mechanical Manufacturing: Integral to assembling components of mechanical equipment, such as machine tools and automotive engines, these bolts ensure precise positioning and reliable component connections, guaranteeing seamless equipment operation.

Bridge Engineering: In the majestic realm of bridge construction, these bolts are crucial for securing bridge piers to main bodies, fixing bridge deck expansion devices, and more. They adeptly bear vehicle loads and withstand natural elements, safeguarding the bridge's structural stability.