BS A 301:1989 - Procurement of corrosion and heat-resisting steel bolts with strength classification 1100 MPa and MJ threads
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BS A 301:1989 is a British Standard specification that pertains to the procurement of corrosion and heat-resisting steel bolts with a strength classification of 1100 MPa and MJ threads.
Here are the key aspects covered by this specification:
Material Specifications: Detailed requirements for the corrosion and heat-resisting steel used in the manufacturing of bolts. This includes specifications for the chemical composition, mechanical properties, and heat treatment of the steel to ensure it meets the desired strength and corrosion resistance standards.
Strength Classification: Specifications for the strength classification of the bolts, which in this case is 1100 MPa. This indicates the minimum tensile strength of the bolts, ensuring they are suitable for applications requiring high-strength fasteners.
Thread Specifications: Guidelines for the MJ (Modified J) threads used in the bolts. This includes specifications for the thread geometry, dimensions, and tolerances to ensure proper fit and compatibility with mating parts.
Surface Finish and Coating: Requirements for the surface finish and corrosion-resistant coatings applied to the bolts to enhance their durability and resistance to environmental factors.
Quality Assurance: Standards for quality control and assurance processes to be implemented during the manufacturing and procurement of the bolts. This ensures that the bolts meet the specified requirements and standards for strength, dimensions, and surface finish.
