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Help CenterFactory Direct Through Bolt Yellow Zinc Plated Carbon Steel Full Sizes Available High Loading Capacity
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Welcome to Hefei SENOTECH New Materials Co., Ltd – your trusted partner for high-quality industrial fasteners. As a professional trading company established in 2020, we have rapidly grown to serve clients across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and beyond, with an annual export value exceeding US$1 Million. Our factory-direct Through Bolt with Yellow Zinc Plating in carbon steel is engineered to deliver exceptional loading capacity and reliable performance in demanding applications. With full sizes available, we ensure you find the exact bolt for your project – whether it's construction, machinery assembly, or structural steelwork.
This product combines robust carbon steel construction with a corrosion-resistant yellow zinc plating, offering a balanced solution for strength and durability. Our through bolts are designed for heavy-duty fastening where high clamp loads are required. The full range of sizes (from M6 to M30, 1/4” to 1”) ensures compatibility with diverse applications. Each bolt is manufactured under strict quality control to meet international standards, ensuring consistent thread accuracy and mechanical properties.
Key Features & Technical Specifications
- Material: High-grade carbon steel (e.g., 1045, 10.9 grade equivalent) – offers excellent tensile strength and toughness.
- Plating: Yellow zinc plating – provides superior corrosion resistance and a distinctive appearance. Passes 72+ hours neutral salt spray test.
- Loading Capacity: Designed for high loading – proof load up to 700 MPa for M10 grade 10.9 bolts.
- Size Availability: Full sizes from M6 to M30 (metric) and 1/4” to 1” (inch) – both fully threaded and partially threaded options.
- Thread Type: Metric coarse (ISO), UNC, UNF – customizable for specific regional preferences.
- Head Style: Hex head or heavy hex head – compatible with standard wrenches.
- Quality Control: Dimensional inspection, hardness test, tensile test, and plating thickness check per batch.
| Size (Metric) | Thread Pitch (mm) | Proof Load (kN) | Length Range (mm) |
|---|---|---|---|
| M6 | 1.0 | 15.0 | 20-100 |
| M8 | 1.25 | 27.5 | 25-120 |
| M10 | 1.5 | 43.0 | 30-150 |
| M12 | 1.75 | 62.0 | 35-200 |
| M16 | 2.0 | 119.0 | 40-250 |
| M20 | 2.5 | 186.0 | 50-300 |
| M24 | 3.0 | 268.0 | 60-350 |
| M30 | 3.5 | 433.0 | 80-400 |
Advantages of Choosing Our Through Bolts:
- Factory Direct Pricing: Eliminate middlemen – competitive prices without compromising quality.
- Full Sizes In Stock: Quick turnaround – common sizes ship within 24 hours.
- Consistent Mechanical Properties: Heat treatment ensures uniform hardness and tensile strength.
- Excellent Corrosion Resistance: Yellow zinc plating protects against rust and oxidation, extending service life.
- Versatile Application: Ideal for bolting steel structures, heavy machinery, automotive frames, and industrial equipment.
- Customizable Options: Length, thread pitch, and material grade (e.g., 8.8, 10.9, 12.9) available upon request.
Our through bolts undergo rigorous quality checks: dimensional verification using calibrated gauges, mechanical testing (tensile, yield, hardness), and plating thickness measurement. Each batch is traceable, ensuring you receive reliable products every time.
Trust & Reliability from Hefei SENOTECH
Since 2020, Hefei SENOTECH New Materials Co., Ltd has been a dedicated exporter of industrial fasteners, achieving an annual export value of US$1 Million to US$1.5 Million. Our main markets span across North America, South America, Europe, Asia, Africa, and Oceania, reflecting our global reach and commitment to quality. We partner with experienced manufacturers who follow strict production standards, ensuring that every carbon steel through bolt meets your expectations for strength and durability.
We understand that fasteners are the backbone of any structure. That's why we offer full sizes availability and high loading capacity to support your critical applications. Our team provides responsive customer service, technical support, and flexible shipping options (FOB, CIF, EXW). Whether you need a small sample or a bulk order, we are ready to assist.
Contact us today to request a quote or discuss your specific requirements. Let us demonstrate why our through bolts are the choice of professionals worldwide.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a through bolt and a regular bolt?
A: A through bolt typically passes completely through the materials being fastened and is secured with a nut on the opposite side. It is designed for high clamp loads and structural applications. Our through bolts feature full or partial threads to suit different needs. -
Q: Are these bolts suitable for outdoor use?
A: Yes, the yellow zinc plating provides good corrosion resistance, making them suitable for many outdoor environments. However, for highly corrosive conditions (e.g., marine), we recommend consulting for additional coatings like hot-dip galvanized or stainless steel options. -
Q: Can you provide bolts with a specific length or thread pattern?
A: Absolutely. We offer full customization on length, thread pitch, and even partial thread lengths. Please specify your requirements when placing an order. -
Q: What is the loading capacity of the M10 through bolt?
A: For grade 10.9 M10 through bolt, the proof load is approximately 43 kN, and the tensile load can exceed 65 kN. Exact values depend on the grade and thread configuration. Refer to our technical table above. -
Q: Do you offer samples for testing?
A: Yes, we provide sample orders for evaluation. Minimum order quantity may apply for customized sizes, but standard sizes are available in small quantities. -
Q: What packaging options do you have?
A: We offer bulk packaging in cartons, pallets, or as per customer request. For export, we use sturdy plywood cases or steel drums to prevent damage during transit. -
Q: Are your through bolts certified to any international standards?
A: Our bolts are manufactured to meet common standards like DIN 931, DIN 933, ISO 4014, and ASTM A325/A490 (depending on grade). We can provide test reports and certificates upon request, but please confirm specific certification needs with our sales team. -
Q: What is the lead time for a large order?
A: For standard sizes, we typically ship within 7-15 days after order confirmation. For customized or large quantities, lead time may be 20-30 days. We always strive to meet your deadline.
Ready to secure your next project with reliable fasteners? Contact Hefei SENOTECH New Materials Co., Ltd today for a competitive quote and fast delivery.
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