Basic Product Information
- Product Name: 316 Stainless Steel Unequal-Length Double-Ended Studs, Studs with Long and Short Threads, Custom Double-Ended Bolts
- Standards: GB/T 898, DIN 939
- Material: 316 Stainless Steel (A4-70)
- Strength Grade: A4-70
- Surface Treatment: Natural Finish, Pickling and Passivation
- Construction: Short thread on one end (insertion end), long thread on the other end (locking end), with a smooth shaft in between
Product Features
Contains molybdenum for enhanced resistance to chloride corrosion. Resistant to seawater, acids, alkalis, salt spray, and humidity. Significantly superior to 304 stainless steel, making it ideal for marine, chemical, and coastal engineering applications.
The shorter threaded end is screwed into the equipment's threaded hole, while the longer threaded end is secured with a nut. This ensures precise positioning and a strong connection, making it suitable for flanges, valves, and equipment body fastening.
Ideal for confined spaces, sealing surfaces, internal equipment structures, and pipeline connections where hex bolts cannot be used.
Precisely machined threads ensure smooth engagement without jamming or stripping. Compatible with 316 stainless steel nuts and flat washers, providing better overall corrosion resistance.
Standard sizes from M3 to M24 are available in stock. Thread length, overall length, and pitch can be customized according to drawings.
Applications
- Ships, offshore engineering, offshore platforms, port equipment
- Seawater treatment, coastal solar power, wind power, cooling towers
- Chemical pipelines, valves, pump bodies, flange connections
- Food and pharmaceutical industries, medical devices, high-cleanliness equipment
- Coastal buildings, curtain walls, guardrails, outdoor heavy-duty anti-corrosion facilities
Standard Size Chart (mm)
|
Specifications |
Pitch P |
Short Threaded End bm |
Long Threaded End b |
Standard Overall Length L |
|
M6 |
1.0 |
6 |
18 |
30–100 |
|
M8 |
1.25 |
8 |
22 |
40–120 |
|
M10 |
1.5 |
10 |
26 |
50–150 |
|
M12 |
1.75 |
12 |
30 |
60–200 |
|
M16 |
2.0 |
16 |
40 |
80–250 |
|
M20 |
2.5 |
20 |
50 |
100–300 |
|
M24 |
3.0 |
24 |
60 |
120–300 |
Common lengths: 30, 40, 50, 60, 70, 80, 90, 100, 120, 150, 160, 180, 200, 250, 300
FAQ
1. What is a stud? What are the common types?
A stud is a fastener with threads on both ends (or fully threaded) that connects by mating with nuts on both ends.
Common types: Double-ended studs, fully threaded studs, half-threaded studs, custom non-standard studs
2. What standards do your studs comply with?
We can manufacture according to various standards: international standards, national standards, and custom non-standard specifications
3. How do I determine the appropriate stud length?
Stud length = Total thickness of parts to be connected + Washer thickness + Nut height + 1.5–3 thread pitches (locking allowance).
For flange connections, please provide flange standards (e.g., ASME B16.5), and we can calculate the exact length for you free of charge.
4. What after-sales services are available?
We offer replacement or refund for quality issues. We provide technical support for product selection, installation, and drawing design. Real-time tracking of production and logistics is available. We can reserve stock for regular customers, who enjoy long-term preferential pricing.
5. Can you produce custom studs?
Yes, we support comprehensive customization: custom dimensions, special materials, special processes, and custom packaging. We can provide 3D drawings and samples for confirmation before mass production.
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