You can usually figure out the grade, or strength, of a bolt by looking at the markings on its head. English bolts (U.S.S. or S.A.E) are categorized by grade, from grade 2 to grade 8, where the grade represents inch strength. The higher the grade, the stronger the bolt. English...
Related Keywords for ASTM F568 Grade 12.9 Bolts: grade 12.9 bolts,class 12.9 bolts,grade 12.9 metric bolts,grade 12.9 bolt strength, etc. Grades Material Description Grade 12.9 Quenched & Tempered ; Alloy Steel Markings & Mechanical Prperties Markings & Mechanical Prperties GradesMarkingsSize Range...
US Bolts Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties Proof Load (psi) Min. Yield Strength (psi) Min. Tensile Strength (psi) 307A Low carbon steel 1/4" thru 4" N/A N/A 60,000 No Markings Grade 2 Low or medium carbon steel 1/4" thru ...
Related Keywords for ASTM F568 Grade 8.8 Bolts: 8.8 bolts,grade 8.8 bolts,class 8.8 bolts,class 8.8 bolt strength,metric class 8.8,class 8.8 steel etc. Grades Material Description Grade 8.8Medium Carbon Boron Steel ; Quenched & Tempered
ASTM A193 Grade B7 heavy hex head bolts are high strength fasteners manufactured from heat treated alloy steel AISI 4140/4142, quenched and tempered. Dimensional specifications are governed by ASME B18.2.1. Grade markings consists of both the grade symbol "B7" and the manufacturer's i...
with a standard marking to state its grade. For example, a grade 8 bolt is marked with six radial lines around the face of the bolt head, and a grade 5 bolt has three radial lines, but a grade 2 bolt has no markings. Metric bolts have various combinations of numbers marking their ...