DIN975 DIN976 Threaded Rod B7 Stud Bolt for Engine Room
Threaded StudandThread Rod Stud are fundamental components for marine engineering connections. Our DIN975 / DIN976 Stud Bolt series covers full-thread and double-end configurations from M6 to M64, manufactured to exact dimensional tolerances per ISO 965 class 6g. The B7 All Thread variant, conforming to ASTM A193 Grade B7 chromium-molybdenum alloy steel, delivers minimum tensile strength 860 MPa and yield strength 720 MPa for critical high-temperature service up to 400°C.
In ship engine rooms, HeavyHex Stud assemblies with A194 Grade 2H heavy hex nuts secure flange connections, heat exchanger mounting, turbine casing joints, and boiler manway bolting. Each stud bolt undergoes 100% dimensional inspection with GO/NO-GO thread gauges, ensuring full thread engagement and uniform load distribution. All studs are stamped with material grade and heat number for complete traceability per EN 10204 3.1 certification, meeting classification society requirements for marine propulsion and auxiliary systems.
| Product Name | Threaded Rod / Stud Bolt |
| Standard | DIN975 / DIN976 / ASTM A193 B7 |
| Type | Full Thread Rod / Double-End Stud / Thread Rod Stud |
| Size Range | M6 – M64 |
| Length | 100 mm – 3000 mm (custom lengths on request) |
| Material / Grade | B7 All Thread / Grade 4.8 / 8.8 / 10.9 / SS304 / SS316 |
| Thread | Metric Coarse (M) / Metric Fine (MF) / UNC / UNF |
| Surface Finish | Plain / Zinc Plated / HDG / Dacromet / PTFE Coated |
| Tensile Strength (B7) | ≥ 860 MPa |
| Application | Engine Room Flange, Heat Exchanger, Turbine Housing, Boiler Manway |
| Packaging | Carton + Pallet / Thread Protector + Wooden Case |
SINOFASTENER supplies DIN975 DIN976 stud bolts to shipyards across Southeast Asia, Europe, and the Middle East. Each shipment includes mill test certificates and third-party inspection reports from Lloyd's Register or Bureau Veritas upon request. For non-standard lengths, special thread pitches, or duplex stainless steel variants, contact our engineering team with your specification.
E-mail: sales@sinofastener.com | SINOFASTENER
