R.R.Steel Industries

Diameter: 3/8 inch (approximately 9.5mm) – refers to the thickness of the threaded shaft

Material: Mild steel – strong and economical, suitable for general-purpose use (may be zinc-plated or painted for corrosion resistance)

Grade: B8 – if accurately stated, typically refers to a stainless steel grade under ASTM standards (common in bolts); if used with mild steel, "B8" may be a manufacturer or product code rather than a material spec (clarification may be needed)

Hook Type: Hook screw – features an open curved hook at one end, ideal for hanging or securing items

Thread Type: Coarse thread for solid grip in wood or with wall plugs in masonry

Length: Typically varies; not specified in this case but assumed to be standard to the application (you can specify if needed)

Installation: Screws directly into wood or into masonry using a plastic or metal wall plug; can be installed by hand or with pliers

Common Uses:

Hanging chains, cables, or ropes

Supporting planters, lights, or tools

General utility in workshops, garages, and outdoor fixtures

Load Capacity: Medium to heavy-duty depending on length, anchoring method, and surface material

A 35mm coach screw (also known as a lag screw) is a heavy-duty fastener commonly used in wood and masonry applications. Here’s a bullet-point description:

Length: 35mm (measured from under the head to the tip)

Head Type: Typically hexagonal (hex head) for use with a spanner or socket

Thread: Coarse, deep threads for strong grip in timber or wall plugs

Material: Usually made from steel (can be zinc-plated, galvanized, or stainless steel for corrosion resistance)

Usage:

Securing heavy timber joints

Fixing metal brackets or plates to wood

Anchoring items into masonry (with appropriate wall plugs)

Installation: Requires a pilot hole in wood or a wall plug in masonry; driven in with a wrench or socket

Holding Power: High shear and pull-out strength, ideal for structural applications