Shaanxi Flourish Industrial Co., Ltd.
                                                                                                           
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7 Years
Since 2019
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ASTM A193 B7 Double-Ended Stud Bolt 30mm-3000mm Length M4-M52 Diameter with Black Oxide Finish

Price Negotiable
MOQ: 10 pieces
Delivery Time: 10-25days
Brand: FLRS or OEM
Product Description
Product Overview

Full thread black finish double-ended stud bolt with two hex head nuts, manufactured according to ASTM A193 B7/A194 2H standards. Available in lengths from 30mm to 3000mm with diameters ranging from M4 to M52 (5/16" to 2").

Technical Specifications
Material Grade ASME A193 B7 / 42CrMoA, Grade 12.9
Finish Black oxide coating
Thread Type UNC, UNF, BSW
Standards ANSI/ASME, DIN, JIS, EN, BS, GB, SH, HG, IFI, ISO
Size Range Diameter: M4-M52 (5/16"-2"), Length: 30mm-3000mm
Minimum Order 5 pieces or 1 ton
Key Features
  • Double-ended design with full threading for maximum flexibility
  • Includes two hex head nuts for secure fastening
  • Black oxide finish provides corrosion resistance
  • High-strength Grade 12.9 material for demanding applications
  • Compliant with ASTM A193 B7 and A194 2H standards
Quality Assurance
Comprehensive Testing

All products undergo rigorous quality control including:

  • Material composition analysis with desktop spectrometer
  • Mechanical property testing (tensile strength, hardness)
  • Surface treatment verification and salt spray testing
  • Dimensional inspection with precision gauges
  • Magnetic particle flaw detection for material integrity
Manufacturing Capabilities
  • Monthly production capacity: 80 tons
  • Custom and non-standard sizes available
  • Small order acceptance (minimum 5 pieces)
  • Professional design and development team
  • Comprehensive after-sales service
Product Images
Black finish double-ended stud bolt with hex nuts - front view showing threading and finish quality
Stud bolt close-up detail showing precise threading and black oxide coating
Industrial stud bolt application in machinery assembly with hex nuts secured
Quality control inspection of stud bolts using precision measurement equipment

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shaanxi Flourish Industrial Co., Ltd.
Location No.3939 Eurasian Ave., Chanba Ecological District, Xi'an, China
Contact Person Fiona Hou

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