About Stud Bolts
Square Head Bolts are heavy-duty fasteners characterized by their distinctive four-sided head. While similar in function to standard Hex Cap screws, the square head design offers a broader surface area for wrenching, providing a superior grip for quick and high-torque tightening.
Often referred to as machine bolts, these fasteners are a staple in both modern industrial applications and historical restorations. In industrial settings, they are easily driven with adjustable wrenches, even in confined spaces where other tools might slip. Beyond utility, square head bolts are highly valued for their aesthetic appeal; they are frequently used to match existing fasteners in older structures or as decorative elements in "rustic" architectural designs. Jade Alloys offers various head styles, including smooth, hammered, and pyramid finishes.
Our Square Head Bolts are typically partially threaded with a precision-engineered shoulder beneath the head. We manufacture these in both Metric and Imperial sizes with UNC, UNF, and ISO metric thread profiles.
Square Head 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 |
Square Head 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 |
Square Head Bolts Materials
Square Head Bolts Specifications
Looking to Buy Square Head Bolts?
Check Nuts Weight Chart and Bolts Weight Chart to estimate quantities accurately for your project.
Request a Quote
