Brophy Machine Hardware WL34 1/4 Inch Pin Wire Lock (3 Inch Steel Fastener Zinc Plated Trailer Coupler Scaffolding Equipment Securing Quick Release)

Brophy Machine Works WL34 1/4" x 3" Square Wire Lock Pin

The Brophy Machine Works WL34 square wire lock pin provides fast, reliable quick-release fastening and mechanical component retention across commercial trailers, agricultural implements, and industrial machinery. Engineered with a 0.25-inch (1/4") shaft diameter, a 3.0-inch usable pin length, and a protective electroplated zinc finish, this high-strength carbon steel fastener resists outdoor rust and surface corrosion. Designed with an integrated square spring wire retainer clip, it snaps securely over the pin end to prevent accidental disengagement during high-vibration towing and heavy machinery operations.

Best Used For:

• Trailer Coupler and Hitch Securing: Locking trailer tongue latches, jack drop-legs, and towing safety linkages to prevent accidental disconnects during transit.
• Agricultural Equipment Adjustments: Securing three-point hitch linkages, implement pins, and tractor attachment brackets for tool-free field swaps.
• Scaffolding and Frame Stabilization: Pinning tubular scaffolding frames, outrigger braces, and structural support tubes securely under heavy construction loads.

Key Performance & Safety Features

• Square Spring Wire Bail: Snaps firmly over the pin shaft to deliver a positive mechanical lock that prevents vibration-induced backing out.
• 0.25-Inch (1/4") Pin Diameter: Precision-formed steel shaft fits standard 1/4-inch alignment holes across diverse industrial and towing equipment.
• 3.0-Inch Usable Pin Length: Provides ample reach to bridge multi-layered steel brackets, frame crossbars, and tubular assemblies.
• Corrosion-Resistant Zinc Plating: Electroplated zinc coating shields carbon steel against oxidation, road salt, moisture, and chemical exposure.
• Tool-Free Quick Release: Allows fast, manual insertion and extraction without requiring pliers, cotter pins, or specialized tools.
• High-Strength Solid Carbon Steel: Resists rotational shear loads and mechanical bending forces under heavy industrial usage.

What's Included

• (1) Brophy WL34 Square Wire Lock Pin – 1/4" Diameter × 3" Length, Zinc Plated

Technical Specifications

Pro-Tip: Orient the square wire bail so that any dragging brush or road debris pushes the spring loop closed against the pin body rather than snagging it open during off-road towing.