Basic Info.
Model NO.
Support customization
Product Description
Stud Bolt Product Specifications and Dimensions
1. Key Dimensions (Metric System)
Parameter | Symbol | Unit | Description |
---|
Nominal Diameter (Thread Size) | d | mm | External thread diameter (e.g., M6, M10, M16) |
Pitch | P | mm | Axial distance between thread peaks (coarse/fine threads) |
Total Length | L | mm | Distance between two thread ends |
Grip Length (Bare Shank) | g | mm | Unthreaded length through clamped components |
Thread Length (Both Ends) | b | mm | Length of threaded sections at both ends (symmetric in standard designs) |
2. Typical Metric Size Table
(Standard equal-length stud bolts, b = 2d + 25 mm for general fastening)
Nominal Diameter d | Pitch P | Thread Length b | Grip Length g Range | Total Length L Range | Application |
---|
M8 | 1.25 | 41 mm | 10-60 mm | 61-121 mm | Pipe flanges, small machinery |
M10 | 1.5 | 45 mm | 15-80 mm | 75-145 mm | Pressure vessels, pump bodies |
M12 | 1.75 | 49 mm | 20-100 mm | 89-169 mm | Steel structures, medium bases |
M16 | 2.0 | 57 mm | 30-150 mm | 117-217 mm | Heavy machinery, bridge bolts |
M20 | 2.5 | 65 mm | 40-200 mm | 145-285 mm | Wind turbines, large vessels |
M24 | 3.0 | 73 mm | 50-250 mm | 173-353 mm | Petrochemical flanges, marine |
3. Inch System Dimensions
Nominal Diameter d | TPI (Threads per Inch) | Thread Length b | Grip Length g Range (in) | Total Length L Range (in) |
---|
1/2" | 13 | 1-1/4" | 1/2-3 | 2-4-1/2 |
5/8" | 11 | 1-3/8" | 3/4-4 | 2-3/4-5-3/8 |
3/4" | 10 | 1-1/2" | 1-5 | 3-6-1/2 |
1" | 8 | 1-3/4" | 1-1/2-6 | 4-7-3/4 |
4. Design Standards and Tolerances
- Thread Length Standards (e.g., ASME B18.2.1, ISO 898-1):
- Short thread end (for tapped holes): b = d + 10 mm
- Long thread end (for nuts): b = 2d + 25 mm
- Tolerances:
- Thread accuracy: 6g (external), 6H (internal)
- Shank: h11 tolerance (for clearance holes)
5. Material and Surface Finishes
- Common Materials:
- Carbon steel (35#, 45#), stainless steel (304, 316), alloy steel (35CrMoA)
- Surface Treatments:
- Hot-dip galvanized, black oxide, Dacromet, zinc plating
6. How to Specify a Stud Bolt
- Metric Example:
Stud Bolt, M20×150×65, 4.8 Grade, Hot-dip Galvanized, GB/T 901
(M20 diameter, 150 mm total length, 65 mm thread length, 4.8 grade carbon steel, hot-galvanized, per GB/T 901) - Inch Example:
Stud Bolt, 3/4"-10×6", 5/8" Grip, A325 Grade, Zinc Plated, ASME B18.2.1
(3/4" diameter, 10 TPI, 6" total length, 5/8" grip length, A325 high-strength steel, zinc-plated, per ASME)
7. Application Scenarios
- Flange connections in pipelines, pressure vessels
- Machinery assembly (engine blocks, gearbox bases)
- Structural engineering (steel frames, bridge supports)
- High-temperature/high-pressure environments (power plants, boilers)
Note: Non-standard sizes (asymmetric threads, special materials) require customization. Always confirm industry-specific standards (e.g., API for oil & gas, ISO for aerospace) when specifying stud bolts.
Address:
N/a, Yantai, Shandong, China
Business Type:
Trading Company
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
GMP
Company Introduction:
Different kinds of products are available in our company. We′re pleased to get your Inquiry and we will reply you as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective.