Wholesale ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt

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ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt

ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt is suitable for structural joints that need high preload while also requiring a low-protrusion, smooth head profile. The button head reduces external interference and improves local clearance.

The tension-control installation method supports more stable preload control in steel structures, bridge components, equipment supports, and space-limited high-strength nodes. Compared with hex head styles, the button head offers advantages in appearance and clearance.

It should be used with appropriate installation tools, nuts, and washers. Batch consistency, friction-surface condition, and final tightening inspection are important, especially for safety-related structural applications.

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Dimensions unit: mm

Thread size  1/2 5/8 3/4 7/8 1 1-1/8 1-1/4
PP UNC 13 11 10 9 8 7 7
k Max. 0.323 0.403 0.483 0.563 0.627 0.718 0.813
Min. 0.302 0.378 0.455 0.531 0.591 0.658 0.749
ds Max. 0.515 0.642 0.768 0.895 1.022 1.149 1.277
Min. 0.482 0.605 0.729 0.852 0.976 1.098 1.223
dk Max. 1.126 1.313 1.58 1.88 2.158 2.375 2.76
b Thread length  Reference value  1 1.25 1.38 1.5 1.75 2 2
z Reference value 0.5 0.6 0.65 0.72 0.8 0.9 1
s1 Reference value 0.32 0.43 0.53 0.61 0.7 0.8 0.9

① Material and mechanical properties should meet the requirements of ASTM F 1852 or ASTM F 2280.

② ASTM A325/A325M/A490/A490M/F1852/F2280 has been merged into ASTM F3125

FAQ

Frequently Asked Questions

  • 1. How soon can I expect a reply after sending an inquiry?

    A: We take every inquiry seriously. On working days, we will respond within 12 hours after receiving your inquiry.

  • 2. What products do you mainly offer?

    A: We focus on the production of fasteners made of carbon steel, stainless steel, and low-alloy steel. We are a direct manufacturer with independent production capacity. ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt Factory. We own several fastener manufacturing facilities and have an international sales department, providing full-process services from production to export.

  • 3. Do you support customized production?

    A: Customized production is our core business. We can develop and manufacture products based on the drawings or samples you provide.

  • 4. Do you produce standard parts?

    A: Yes. In addition to custom products, we also produce general construction machinery parts (GET parts) for equipment such as excavators, including bucket teeth, tooth holders, corner blades, pins, clips, bolts and nuts. ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt Wholesale.

  • 5. What is your production capacity?

    A: We have 12 energy-efficient and environmentally friendly modern production lines (including one fully automatic shell molding line and four heat treatment lines), with an annual production capacity exceeding 20,000 tons, enabling us to steadily meet various order requirements.

  • 6. What are your payment terms?

    A: Trade terms (such as FOB, CIF, etc.) are confirmed when quoting. For batch production, we typically require a 30% deposit, with the balance paid against the copy of the bill of lading. T/T is the main payment method accepted, and L/C can also be negotiated.

  • 7. How is the shipment arranged?

    A: We are only 35 km away from Shanghai Port and Ningbo Port, so sea freight is the main mode of transportation, which is convenient and efficient. For urgent deliveries, we can also arrange air freight via Ningbo or Shanghai airports.

Better Fastener Industry Co., Ltd.

About Us

BETTER FASTENER INDUSTRY CO., LTD.

Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010. ASME B18.2.6:2019 High Strength Tension Control Button Head Bolt Suppliers in China.

The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.

With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.

Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery

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