Truss Head Lag Screw with Washer

$1.50

Heavy-duty 5/16″ × 3″ truss head lag screw with durable yellow zinc plating, T40 star drive, and a 1″ stainless steel washer. Ideal for mounting strut channel to wooden ceiling joists, wall studs, wall mounts, and angled joist hangers in indoor applications.

Description

Truss Head Lag Screw with Washer – 5/16″ x 3″

Securely mount strut channel systems to wood framing with this heavy-duty Truss Head Lag Screw Mounting Kit. Designed specifically for ceiling joists, wall studs, and structural wood members, this kit provides a strong, low-profile fastening solution for a wide range of strut channel installations.

The oversized truss head distributes clamping force over a larger area than standard lag screws, while the included 1-inch outside diameter stainless steel washer helps protect mounting surfaces and provides additional load distribution. The T40 star drive allows for high torque installation with reduced risk of cam-out compared to traditional hex or Phillips drive fasteners.

The lag screw features a durable yellow zinc-plated finish that provides corrosion resistance for indoor applications, making it ideal for garages, workshops, storage areas, and utility spaces.

Features

  • 5/16″ diameter × 3″ long lag screw
  • Durable yellow zinc-plated finish for indoor corrosion resistance
  • Large truss head design for increased bearing surface
  • T40 star drive for secure, high-torque installation
  • Includes one 1″ OD stainless steel washer
  • Designed for wood framing applications
  • Low-profile appearance compared to traditional hex-head lag screws

Common Applications

  • Mounting strut channel directly to wooden ceiling joists
  • Installing wall-mounted strut channel systems
  • Attaching angled ceiling joist hangers
  • Securing wall mount brackets and support hardware
  • Garage, workshop, storage, and utility installations

Kit Includes

  • (1) 5/16″ × 3″ Truss Head Lag Screw with T40 Star Drive
  • (1) 1″ OD Stainless Steel Washer

Built for strength, ease of installation, and a clean finished appearance, this mounting kit is an ideal fastening solution for strut channel storage systems, overhead racks, bike storage installations, and other structural mounting applications.

Note: There are two (2) variants which are functionally the same.

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