Factory Direct Pricing High Strength ASTM A193 B7 Stud Bolts – Custom Sizes, Fast Delivery

FastenMetal LTD specialize in producing high-quality ASTM A193 B7 stud bolts, made from premium chromium-molybdenum alloy steel. Each bolt undergoes precise heat treatment to ensure tensile strength over 125 ksi (862 MPa) and yield strength over 105 ksi (723 MPa)—fully compliant with ASTM A193/A193M international standards.

Our B7 stud bolts offer outstanding high temperature performance, maintaining stability in extreme conditions ranging from -40°C to 593°C. They are widely used in petrochemical, power generation, and heavy machinery industries.

We provide a full range of sizes from 1/4" to 4", supporting both UNC/UNF (inch) and metric threads. We also offer OEM customization based on your drawings, including extended studs, flange bolts, and other non-standard parts tailored to your exact requirements.

To guarantee performance, we use advanced cold heading and hot forging techniques. Every batch undergoes strict salt spray testing (72+ hours) and mechanical testing, with hardness controlled between HRC 22–35. Multiple surface treatments are available—including hot-dip galvanizing, Dacromet, and phosphating—to enhance corrosion resistance in harsh environments.

With our large scale production capacity, we offer extremely competitive pricing. For bulk orders, unit prices start as low as $0.95 per piece, with additional discounts for quantities over 10,000. Regular orders ship in 5–7 days, and we offer 72-hour expedited service for urgent needs.

Every product is delivered with an SGS material certificate and full dimensional inspection report, with support for third-party reinspection. We have proudly served over 500 companies, including PetroChina and wind power equipment manufacturers. We look forward to working with you!

Are You an OEM Manufacturer?

Yes

Fasteners & Stamping Parts Supplier

Fastenmetal is a experienced manufacturer produce fasteners and stamped metal parts. We specialize in OEM production based on customer drawings, offering both standard and custom made solutions.

Our fastener range includes car bolts, marine bolts, chemical bolts, stud bolts, threaded rods, and other high strength bolts.

1.Exotic Material Bolts

For bolts used in extreme environments such as marine, chemical, oil & gas, and aerospace industries,normally need higher corrosion resistance. FastenMetal supply custom bolts and metal components made from exotic materials such as Inconel, Monel, Titanium, and various types of duplex stainless steel.

2.High Strength Bolts

When regular bolts don’t meet strength requirements, we can produce bolts with strength grades up to Grade 12.9 for your requirements.

3.Custom Shapes and Sizes

We manufacture fasteners in special shapes, lengths, and diameters according to specific applications—fully customized according to your drawings.

In addition to fasteners, we offer custom stamping and metal fabrication services. We have 12 punching machines and press machines for large sheet metal forming and bending, we can handle part thicknesses up to 6mm.

In many of these cases, the customer’s engineering department will provide us CAD drawings and tell us the materials,strength grade they need. We produce samples for customers approval before bulk production.