Butterfly screws and wing bolts, along with formwork tie rod bolts with wing nuts, are specialized fasteners designed for applications requiring quick, tool-free assembly and disassembly. Their distinctive “wing” or “butterfly” shaped heads allow for manual tightening and loosening, making them ideal for frequently adjusted or temporary connections. Formwork tie rod bolts with wing nuts are specifically tailored for construction, providing a secure yet easily actionable connection for concrete formwork.

Definition

Butterfly Screws (Wing Screws) and Wing Bolts are fasteners characterized by a flat, winged head designed for manual turning without the need for tools. These are available in various thread types (machine or self-tapping) and materials. Formwork Tie Rod Bolt With Wing Nut specifically refers to a robust tie rod, often with coarse ACME-style threads, which passes through concrete formwork and is secured on either end by large, heavy-duty wing nuts. Both systems prioritize ease of manipulation for rapid locking and unlocking.

Key Features

• Manual Operation: The winged head design allows for hand-tightening and loosening, eliminating the need for wrenches or drivers.
• Quick Adjustment: Ideal for applications where components need to be frequently adjusted, assembled, or disassembled.
• Secure Fastening: Despite manual operation, these fasteners provide a firm and reliable connection when tightened appropriately.
• Variety of Materials: Available in steel (often zinc-plated for corrosion resistance), stainless steel, and sometimes plastic.
• Formwork Specific Design (Tie Rod & Wing Nut): Features robust construction, often with specialized threads and larger wing nuts, to handle the high loads in concrete formwork.

Applications

Butterfly Screws / Wing Bolts:

• Furniture and Fixtures: Used in knockdown furniture, temporary displays, and quickly adjustable jigs or clamps.
• Equipment Covers and Access Panels: Ideal for securing covers on machinery, electrical boxes, or access panels that require regular removal for maintenance.
• Photography Equipment: Common on tripods, light stands, and camera rigs for quick adjustments.
• Musical Instruments: Used on drum kits, cymbal stands, and other adjustable components.
• DIY Projects: Popular in home workshops for creating custom clamps, jigs, and temporary assemblies.

Formwork Tie Rod Bolt With Wing Nut:

• Concrete Formwork: Essential for holding concrete forms together, resisting the outward pressure of wet concrete during pouring.
• Construction Sites: Widely used in various temporary structures and scaffolding applications where quick setup and dismantling are necessary.
• Heavy-Duty Clamping: Can be adapted for heavy-duty clamping scenarios outside of formwork due to their strength and ease of adjustment.

Advantages

• Tool-Free Assembly: Greatly speeds up assembly and disassembly processes, reducing labor time and the need for specialized tools.
• Enhanced Efficiency: Enables rapid changes and adjustments, improving operational efficiency in dynamic environments.
• Reduced Risk of Stripping: Manual tightening reduces the likelihood of over-tightening and stripping threads that can occur with power tools.
• Versatility: Suitable for a broad range of temporary to semi-permanent fastening applications across many industries.
• Visibility of Engagement: The distinct wing shape often provides a clear visual indication of whether the fastener is tight or loose.