About Lag Bolts
Lag bolts, sometimes known as Lag Screws, are a heavy fastener, with a head of hex or square shape, with deep sharp threads and a gimlet point. In contrast to standard machine bolts, lag bolts are made with a purpose of producing their own mating thread in a wood and other soft source, thus being crucial to bolting timber with metal, or joining hefty lumber.
While hex lag bolts are the most common variety, they are produced in various head styles to suit specific wrenching requirements. At Jade Alloys, we manufacture these "wood lag bolts" in both metric and imperial dimensions, supporting thread profiles such as UNC, UNF, and ISO metric. Our lag bolts are produced across all major material categories, including high-corrosion resistant stainless steel and high-tensile carbon steel, adhering to global ASTM specifications.
Lag Bolts Properties
| Property | Details |
|---|---|
| Manufacturing | Hot Forged / Cold Forged |
| Metric Size | M3 to M72 |
| Imperial Size | 1/4” to 3” |
| Threads | Metric, UNC, UNF, BSW |
| Form | Fully Threaded / Partially Threaded |
| Standards | ASTM, ASME, DIN, ISO, BS, IS |
| Sub Types | As per product category |
Lag Bolts Standards
| Standard | Size Range |
|---|---|
| ASME B18.2.1 / B18.2.2 | 1/4” to 3” |
| ASTM A194 / A193 | M6 to M72 |
| DIN 934 / DIN 6914 | M6 to M72 |
| ISO 4032 / ISO 7412 | M6 to M72 |
| BS 1769 | 1/4” to 2” |
| IS 1363 | M6 to M72 |
Lag Bolts Specifications
Looking to Buy Lag Bolts?
Check Nuts Weight Chart and Bolts Weight Chart to estimate quantities accurately for your project.
Request a Quote
