Industrial stud bolts and heavy hex nuts for bolted flange connections, piping systems, pressure equipment and mechanical assemblies. Supplied in carbon steel, alloy steel and stainless steel grades according to applicable material and dimensional requirements.
Stud bolts are threaded fasteners commonly used to assemble flanges and other bolted pressure-containing connections. A stud is threaded along its length and is generally installed together with nuts on the exposed threaded ends.
For industrial piping applications, the fastener material and nut combination are selected according to the applicable piping specification, operating temperature, mechanical requirements and corrosion conditions.
Common industrial bolting requirements include ASTM A193 B7 studs with ASTM A194 2H heavy hex nuts. Other grades such as B16 and stainless steel bolting can be supplied where specified.
Rhevon can source stud bolts and matching heavy hex nuts as individual components or as complete bolting requirements for flange assemblies.
High-strength bolting solutions for industrial piping, flanges and pressure-containing assemblies.
Stud bolts can be supplied with matching heavy hex nuts according to the specified material grade, dimensions, thread configuration and application.
A commonly specified alloy steel bolting combination for industrial piping and flange connections.
Alloy steel bolting for applications requiring the specified high-temperature and mechanical performance of Grade B16 material.
Stainless steel bolting for applications where corrosion resistance and compatibility with the process environment are required.
Fastener grades are selected according to the required mechanical properties, temperature range, corrosion conditions and project specification.
| Stud / Bolt Grade | Nut Grade | Material | Typical Application |
|---|---|---|---|
| ASTM A193 B7 | ASTM A194 2H | Alloy Steel | Industrial Piping / Flanges |
| ASTM A193 B16 | ASTM A194 Grade 7 | Alloy Steel | Higher Temperature Service |
| ASTM A193 B8 | ASTM A194 Grade 8 | Stainless Steel | Corrosive / General Service |
| ASTM A193 B8M | ASTM A194 Grade 8M | Stainless Steel | Corrosive / Chloride Service |
Reference stud quantities, nominal diameters and lengths for raised-face Class 150 and Class 300 flange joints.
Swipe horizontally to view every column.
| Flange NPS | 150 Qty | d150(mm) | L150(mm) | 300 Qty | d300(mm) | L300(mm) |
|---|---|---|---|---|---|---|
| ½ | 4 | 12.70 | 57.15 | 4 | 12.70 | 63.50 |
| ¾ | 4 | 12.70 | 63.50 | 4 | 15.88 | 76.20 |
| 1 | 4 | 12.70 | 63.50 | 4 | 15.88 | 76.20 |
| 1 ¼ | 4 | 12.70 | 69.85 | 4 | 15.88 | 82.55 |
| 1 ½ | 4 | 12.70 | 69.85 | 4 | 19.05 | 88.90 |
| 2 | 4 | 15.88 | 82.55 | 8 | 15.88 | 88.90 |
| 2 ½ | 4 | 15.88 | 88.90 | 8 | 19.05 | 101.60 |
| 3 | 4 | 15.88 | 88.90 | 8 | 19.05 | 107.95 |
| 3 ½ | 8 | 15.88 | 88.90 | 8 | 19.05 | 107.95 |
| 4 | 8 | 15.88 | 88.90 | 8 | 19.05 | 114.30 |
| 5 | 8 | 19.05 | 95.25 | 8 | 19.05 | 120.65 |
| 6 | 8 | 19.05 | 101.60 | 12 | 19.05 | 120.65 |
| 8 | 8 | 19.05 | 107.95 | 12 | 22.23 | 139.70 |
L excludes end points rather than measuring tip to tip.
Verify the actual flange stack, gasket, nut dimensions, washer allowance and thread projection before ordering.
Stud bolts and nuts can be inspected and documented according to the applicable purchase specification, material standard and project requirements.
Providing the following information helps us identify the correct stud bolt and heavy hex nut combination.
Common procurement questions about flange bolting, grades, dimensions and documentation.
Stud bolts are commonly used for bolted flange connections in industrial piping, pressure equipment and mechanical assemblies. They are particularly common where controlled bolting of pressure-containing joints is required.
A stud bolt is generally threaded along its length and is installed with nuts, whereas a hex bolt normally has a formed head on one end and a threaded portion on the other. Studs are widely used for flange connections because the bolting arrangement allows nuts to be tightened from both sides of the assembly.
ASTM A193 B7 is a commonly specified alloy steel grade for industrial stud bolting, while ASTM A194 Grade 2H is commonly specified for the matching heavy hex nuts. The exact combination should always follow the applicable piping or project specification.
A typical enquiry should include stud diameter, length, thread specification, stud material grade, nut grade, quantity and finish. For flange applications, providing the flange size, pressure class or existing bolting schedule can also help confirm the required dimensions.
Yes. Stud bolts, heavy hex nuts and washers can be included in the same requirement as flanges, gaskets and pipe fittings. This is particularly useful for procurement teams sourcing complete flange connection packages.
Share the diameter, length, thread, stud grade, nut grade, finish and quantity. You can also send your complete flange, gasket, fitting and fastener requirement through a single RFQ.
