YIDU69Q 8 Pcs 1-Inch Square Tube Fittings – 1 Way with Plate & Square Post Flange Base

Overview

The YIDU69Q 8 Pcs 1-Inch Square Tube Fittings are a compact, practical kit designed to help you create sturdy square-tube frames with clean lines. Built to work with standard 1-inch square tubes, these connectors help you align joints precisely and finish projects with a neat, professional touch. The electro-galvanized coating protects the surface during handling and assembly, while the underlying low carbon steel delivers reliable strength without unnecessary weight. With a choice of plate thickness (2 mm or 3 mm), you can tailor the fit to your project’s needs. Whether you’re assembling a sleek shelving unit, a compact display rack, or a small outdoor frame, this set offers a practical starting point for many DIY and workshop applications.

Key specifications

• Tube compatibility: 1-inch square tubes
• Material and finish: low carbon steel with electro-galvanized coating
• Plate thickness: 3 mm and 2 mm options for different load profiles
• Prepunched holes: Φ6 mm for #12 screws; Φ10 mm for 3/8 inch bolts
• Packing list: 8 pieces of square post flange base

Hardware details and installation tips

The prepunched holes simplify assembly, letting you fasten frames with commonly available hardware. The electro-galvanized finish provides a protective layer that helps maintain a clean appearance in indoor environments and protected outdoor spaces. To ensure a snug fit, align joints before tightening hardware and avoid overtightening, which can affect alignment over time.

What you can build

• Sturdy, low-profile shelving and display stands for home or studio use
• Modular frames for small workshops, retail displays, or craft spaces
• Lightweight garden supports, plant stands, or simple outdoor frames
• Quickly reconfigurable layouts that adapt as needs change

Benefits to consider

These fittings are designed to complement standard 1-inch tubing with a clean aesthetic and predictable assembly experience. While individual results vary with design and load, users often appreciate the balance of straightforward installation, a durable surface finish, and the option to select between 2 mm and 3 mm plate thicknesses based on project requirements. This kit is a practical starting point for building functional frames with a cohesive look.

The YIDU69Q 8-piece square post flange base set is compact enough for tight spaces yet capable enough to support a range of personal and professional projects. It’s a dependable option when you want to create frames that stay true to your design vision while remaining easy to assemble and adjust as needed.