Customized Steel Stud Bolt ZINC Finish With Length 10mm ASTM A320 L7
Product Overview
Engineered for extreme environments, our ASTM A320 L7 Steel Stud Bolts deliver unmatched strength, durability, and corrosion resistance for critical applications in low-temperature and high-pressure systems. Customizable in length, diameter, and threading, these zinc-plated stud bolts are precision-manufactured to meet rigorous industrial standards, making them ideal for oil and gas, petrochemical, and marine industries where reliability is non-negotiable.
Key Features
✅ ASTM A320 L7 Compliance
Crafted from alloy steel grade L7, these stud bolts excel in sub-zero temperatures (down to -150°F / -101°C) and high-stress environments, ensuring toughness and impact resistance.
✅ Zinc Plated Finish
Electroplated zinc coating provides superior corrosion protection against moisture, chemicals, and saltwater, extending service life in harsh conditions.
✅ Fully Customizable
Tailor dimensions and specs to your needs:
- Length: 10mm (standard) or custom lengths up to 500mm.
- Diameter: M6–M36 (metric) or UNC/UNF imperial sizes.
- Threading: Full or partial threads, fine/coarse pitch.
✅ High Tensile Strength
Heat-treated to Rockwell C28–32 hardness, with a tensile strength of 150 ksi (1,034 MPa), ensuring resistance to shear, fatigue, and deformation.
✅ Global Certification
Complies with ASTM A320, ASME B16.5, ISO 898-1, and NACE MR0175 for sour service environments.
Technical Specifications
Material: ASTM A320 L7 Alloy Steel
Finish: Zinc Plated (Standard), Optional Hot-Dip Galvanized or Xylan Coating
Diameter: M6–M36 (Custom Sizes Available)
Length: 10mm (Standard), Customizable up to 500mm
Thread Standards: ISO, DIN, ANSI, or Custom
Temperature Range: -150°F to 650°F (-101°C to 343°C)
Load Capacity: Up to 1,200 MPa (Dependent on Size)
Certifications: ASTM A320, NACE MR0175, ISO 9001, ROHS
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More Detail Informations
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Available Material
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1.Stainless Steel: SS303, SS304, SS316, SS410, SS420;
2.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045; 3.Brass: C3602,C3604,Hpb59,Hpb62,Hpb65,Hpb58,Hpb70 ; 4.Aluminum: Al6061, Al6063 etc or as your requirements |
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Head type
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CSK Head,Pan Head,Truss Head,Hexagon Head,Round Head,Oval Head,Button Head,Cap Head,Cheese Head,etc.
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Hardness
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Carbon Steel:HRC:28~35 ,HV450~700
Alloy Steel:HRC:32~39(grade10.9) HRC:39~44(grade12.9) |
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Finish
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Zinc plated, Nickel plated, Bronze, Copper,Phosphate, Oxidation black, Passivation, Tin, Dacromet, Gold, Chrome, Silver,
Phosphorization,Zinc-nickel alloy plated etc. |
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Sample Available
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The sample is free of charge if we have the existing tooling,you only need to pay for the freight cost
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Delivery time
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Samples time 3-5 working days, Lead time 20-25 working days
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Pricing Term
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EXW Dongguan(FCA),FOB, CIF, CNF, DDU,etc.
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Packing
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Bulk in PE bag or Small boxes.then in carton .pallet
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Payment term
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TT (30% in advance as deposit, balance before delivery) , L/C, Western Union,PayPal etc
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Management system
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ISO9001:2015
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Certificate
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ISO,ROHS
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A1: Our main products are Electronic screws,Sems screws,Tapping screws,Chicago screws,Shoulder screws etc. Special Non-standard studs,Turning parts and High-end precision complex CNC Machining parts etc.
A2: Carbon Steel, Alloy Steel, Aluminum alloy,Stainless Steel, Brass, Copper ,Titanium alloy or according to your requirement.
A: We usually offer you a quotation within 12 hours, and the special offer is not more than 24 hours.Any urgent cases, please contact us directly by phone or send email to us.
A: If the weight of goods more than 80kg,Normally we use shipment to transprot the orders. It is about 20-30days . If the weight of goods less than 80kg,or there are urgent, we can send the goods via air express,It is 3~5 days.
Q4: What's your packing?What to do in case of damaged goods during transport?
A1: Our Normal packing is bulking in Cartons, less than 20 kgs/carton, 48 cartons / pallet. We also can pack products according to your requirement.
A2: To avoid any subsequent trouble regarding quality issue, we suggest you check the goods once you receive them. If there is any transport damaged or quality issue, don't forget take the detail pictures and contact us as soon as possible, we will properly handle it to make sure your loss to reduce to the smallest.
A: Yes, for big order, frequent customers, we give reasonable discounts.
A: Our production equipment is a new imported equipment. We have a group of skilled workers who have been working for more than 10 years. Their production experience is very rich and their skills are very skilled. The screws can be 30 million pcs/month. We have sufficient funds to ensure the normal operation of the factory.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.