Allied Group
7/8″ B7 Stud with 2H Nuts – Plain Finish
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- SKU:
- B7SB78
- Availability:
- Usually Ships Same Day
- Weight:
- 0.00 LBS
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Description
7/8″ B7 Stud with 2H Nuts – Plain Finish
7/8″ ASTM A193 Grade B7 studs with ASTM A194 Grade 2H heavy hex nuts provide high-strength bolting for pressure-rated flange connections, valves, fittings, and industrial piping systems. The plain, uncoated alloy-steel finish is a dependable choice for general industrial service where a specialized protective coating is not required.
Choose the required stud length from the product options above.
Not sure what stud length or quantity to order?
Use the GetPipe Flange Bolting Assistant below. Select your flange application and we will calculate the recommended stud length and total quantity, then help select them in the product options above.
Complete Your Flange Connection
Need the gasket too? Pair your B7 studs with the proper flange gasket for your nominal size, pressure class, facing, and service.
Shop Flange Gaskets- Stud Diameter: 7/8″
- Thread Size: 7/8-9
- Stud Grade: ASTM A193 Grade B7
- Stud Material: Alloy Steel
- Nut Grade: ASTM A194 Grade 2H
- Nut Style: Heavy Hex
- Finish: Plain / Uncoated
- Common Use: Industrial Flange Bolting
- Configuration: B7 Stud with 2H Nuts
Features & Benefits
- High-strength ASTM A193 Grade B7 alloy steel construction
- Supplied with ASTM A194 Grade 2H heavy hex nuts
- Plain, uncoated finish for general industrial service
- Designed for industrial flange bolting applications
- Suitable for pressure-rated piping systems
- Available in multiple stud lengths
- Suitable for new installations, maintenance, repair, and replacement bolting
Common Applications
Flanged Piping
- ANSI / ASME flange connections
- Carbon steel piping systems
- Alloy steel piping systems
Industrial Equipment
- Flanged valves
- Flanged fittings
- Industrial process piping equipment
Why Choose Plain-Finish B7 Studs?
ASTM A193 Grade B7 is commonly used for high-strength flange bolting in industrial pressure piping systems. Plain-finish B7 studs provide the strength and temperature capability associated with Grade B7 alloy steel without an additional surface coating, making them a practical choice for general industrial installations, maintenance work, and replacement bolting where enhanced corrosion protection is not required.
Frequently Asked Questions
+ What flange sizes use a 7/8″ B7 stud?
For the standard applications covered by this selector, 10″ and 12″ Class 150 flanges use 7/8″ diameter studs. The Class 300 application shown here is an 8″ flange. Class 600 applications include 3-1/2″ and 4″.
+ How do I know which 7/8″ stud length I need?
Use the GetPipe Flange Bolting Assistant near the top of this page. Select your pressure class, nominal flange size, flange facing, flange type, and number of connections. The assistant will provide the recommended stud length, GetPipe SKU, studs per connection, and total quantity required.
+ What flange types can I use with these B7 studs?
B7 studs are commonly used with industrial flange connections including weld-neck, slip-on, threaded, socket-weld, lap-joint, and blind flanges . The required stud diameter is determined by flange size and pressure class, while the required stud length depends on the complete bolted joint.
+ Can I use these studs with weld-neck flanges?
Yes. ASTM A193 Grade B7 studs with ASTM A194 Grade 2H nuts are commonly used in bolted weld-neck flange connections. Use the sizing assistant to identify the applicable stud diameter and standard reference length.
+ Can I use these studs with slip-on flanges?
Yes. These B7 studs are commonly used with bolted slip-on flange connections. Verify the entire joint thickness when selecting stud length, especially when the connection includes non-standard gasket thickness, washers, insulating kits, or other components.
+ Can I use these studs with blind flanges?
Yes, but blind flange thickness can affect the required stud length. The sizing assistant identifies standard reference bolting, but the complete joint thickness should be checked before ordering studs for a blind-flange connection.
+ Can I use these studs on raised-face flanges?
Yes. The stud lengths displayed by the GetPipe sizing assistant are standard raised-face reference lengths for the listed flange sizes and pressure classes.
+ Can I use these studs on flat-face flanges?
The stud diameter may be correct for the selected flange size and pressure class, but verify the complete bolted joint thickness before selecting the stud length. Flat-face flange construction can differ from the raised-face reference length shown by the selector.
+ How many 7/8″ B7 studs do I need?
The required quantity depends on flange size and pressure class. The 7/8″ applications shown here require either 8 or 12 studs per flange connection. Use the + or − buttons to enter the number of complete flange connections and the GetPipe assistant will calculate the total quantity automatically.
+ What if my flange requires a stud larger than 7/8″?
Move to the larger stud diameter specified for the flange. For example, a standard 14″ Class 150 flange and 10″ Class 300 flange use 1″ diameter studs. Using a longer 7/8″ stud does not replace the required larger diameter.
+ Do these B7 studs include nuts?
Yes. These studs are supplied with ASTM A194 Grade 2H heavy hex nuts.
+ What does plain finish mean?
Plain finish means the B7 stud does not have an added PTFE or similar protective surface coating. Plain-finish studs are commonly used for general industrial bolting applications where additional coating-related corrosion protection or reduced-friction properties are not required.
