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Help CenterThrough Bolt 304 Stainless Steel Hot Dip Galvanized Yellow Zinc Plated Full Sizes Available High Loading Capacity
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Hefei SENOTECH New Materials Co., Ltd proudly presents our premium Through Bolt series, available in multiple material and coating options including 304 Stainless Steel, Hot Dip Galvanized, and Yellow Zinc Plated. Designed for high-load applications, these bolts offer exceptional durability and corrosion resistance, making them a reliable choice for demanding projects worldwide. With our full size range and customizable specifications, we ensure you find the perfect fit for your structural needs.
Our through bolts are engineered to deliver consistent performance under extreme conditions. Whether you are working on bridges, steel structures, heavy machinery, or offshore platforms, these bolts provide the high loading capacity required for safety and longevity.
Key Features & Benefits
- Multi-Material Options: Choose from 304 stainless steel (excellent corrosion resistance), hot dip galvanized (superior weather protection), or yellow zinc plated (cost-effective moderate protection).
- Full Size Availability: Metric sizes from M6 to M30 and imperial sizes from 1/4" to 1" are stock items; other sizes available upon request.
- High Loading Capacity: Designed to meet or exceed grade 8.8/10.9/12.9 strength levels, ensuring reliable performance under heavy loads.
- Precision Threading: Consistent thread pitch and depth for smooth installation and secure fastening.
- Corrosion & Wear Resistance: Suitable for outdoor, marine, and chemical environments.
- Customizable Options: Thread types (metric, UNC, UNF, BSW), length variations, and packaging tailored to your project requirements.
Technical Specifications
| Parameter | Value |
|---|---|
| Material | 304 Stainless Steel (SUS304) / Carbon Steel Q235 / Q345 |
| Surface Treatment | Plain, Hot Dip Galvanized (HDG), Yellow Zinc Plated (Y/Z) |
| Thread Standard | DIN 931 / DIN 933 / ISO 4014 / ISO 4017 or custom |
| Grade Equivalent | A2-70 (304), Grade 8.8/10.9/12.9 (carbon steel) |
| Diameter Range | M6 – M30 (metric) / 1/4" – 1" (imperial) |
| Length Range | 20mm – 300mm (standard); longer lengths available upon request |
| Loading Capacity | Up to 1,500 MPa tensile strength (depending on grade) |
| Packing | 20kg/box, 25kg/bag, palletized, or as per client specification |
Why Choose Hefei SENOTECH?
Established in 2020, Hefei SENOTECH New Materials Co., Ltd has quickly become a trusted supplier of high-quality fasteners and construction hardware. Our annual export value of US$1 million to US$1.5 million reflects growing global demand for our products. We serve diverse markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, East Asia, Western Europe, Central America, Northern Europe, Southern Europe, and South Asia – a testament to our reliable quality and competitive pricing.
Every through bolt in our range undergoes rigorous quality control, including dimensional checks, hardness testing, and surface coating inspection. We work closely with experienced manufacturers to ensure consistent batch-to-batch performance. Our team is committed to providing fast lead times, flexible customization, and professional after-sales support. Whether you need a small sample or a full container load, we are ready to meet your requirements.
Ready to secure your next project? Contact us for a quotation, technical datasheet, or free sample. Our through bolts are designed to deliver the strength and reliability your applications demand.
Frequently Asked Questions
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What is the difference between hot dip galvanized and yellow zinc plated through bolts?
Hot dip galvanizing provides a thicker, more durable coating ideal for harsh outdoor or marine environments. Yellow zinc plating offers moderate corrosion protection with a bright finish, suitable for indoor or light exterior use. -
Can you provide bolts with custom lengths or threads?
Yes, we offer customizable lengths and thread types (metric, UNC, UNF, BSW) upon request. Please specify your requirements when placing an order. -
What grade of material is used for high loading capacity?
Our carbon steel through bolts are available in grades 8.8, 10.9, and 12.9. Stainless steel 304 bolts meet A2-70 standard. All options are designed for high-load applications. -
Do you supply through bolts with nut and washer?
Yes, we can provide complete assemblies including matching nuts and washers in the same material and finish. Please inquire for full sets. -
What is the typical lead time for bulk orders?
For standard sizes and finishes, lead time is 15-25 days after confirmation. Custom orders may require 25-40 days depending on complexity. -
How are the bolts tested for quality?
We perform dimensional inspection, tensile strength test, hardness test, and coating thickness/ adhesion test. A quality certificate is provided with each shipment. -
Can I request free samples?
Yes, we offer free samples for evaluation (shipping cost may apply). Contact our sales team with your required size and coating. -
What packaging options are available?
Standard packaging includes 20kg boxes, 25kg bags, or palletizing. Custom packaging with branding or special labeling is available.
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