ASTM F568 Grade 4.8 Bolts, ASTM F568 Grade 4.8 Threaded Rods, ASTM F568 Grade 4.8 Studs, ASTM F568 Grade 4.8 Screws Supplier in Mumbai, India.

The Iso Class 4.8 standard covers Grade 4.8 fasteners such as Bolts, Screws, and Studs. The thread construction of this type of fastener Class 4.8 Bolt could be coarse or fine pitch. Low to medium carbon Alloy Steel was used to make the standard Class 4.8 Carbon Steel Bolt. These steel grades are less expensive and less durable. The tensile strength of Grade 4.8 Nuts in a partially or fully annealed condition is roughly 420 Mpa for low carbon steel and 500 Mpa for medium carbon steel, and its core hardness in terms of Rockwell is between B71 and 95. Carburizing can improve the surface hardness of the Grade 4.8 Mild Steel Bolt.

Chemical Composition

Strength grade/ class	Material and heat treatment	Chemical composition (analysis on the product) %					Minimum hardening temperature °C
		C		P	S	B
		min	max	max	max	max
Grade 4.8	Carbon steel	0,13	0,55	0,050	0,060	Not specified	-

Mechanical Properties