Coach Bolt
Coach Screws (Hex Lag Screws)
Our Coach Screws, also known as Lag Screws or Lag Bolts, are heavy-duty fasteners designed for securing heavy timber or attaching metal to wood. Featuring a hexagonal head for high-torque tightening with a wrench or socket, and deep, coarse threads with a pointed tip, they provide superior holding power in wood and masonry (when used with plugs). They are the standard choice for heavy construction, railway sleepers, and decking substructures where a nut and bolt cannot be used.
Technical Specifications
| Head Style | Hexagonal Head (Designed for wrench/spanner) |
|---|---|
| Thread Type | Coarse Wood Thread (Gimlet Point) |
| Size Range | M6 to M20 | 1/4” to 3/4” Diameter |
| Length Range | 25 mm to 300 mm |
| Installation | Requires pilot hole; tightened via Hex Head |
| Standards | DIN 571, ASME B18.2.1 (Lag Screws), IS 7254 |
| Materials | Carbon Steel, Stainless Steel (304/316) |
| Finish | Zinc Plated (Blue/Yellow), Hot-Dip Galvanized (Outdoor), Black Phosphate |
Key Features & Applications
- Heavy Timber Construction
- Hex Head for High Torque
- Railway Sleepers & Decking
- Masonry Fixing (with Nylon Plugs)
- Deep Coarse Threads
- Pointed Tip for Grip
- Landscaping & Fencing
- Attaching Metal Brackets to Wood
