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. ...
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 3/4" 55,...
Material:AISI1045 for medium carbon steel bolts,4140 for alloy bolts. Standard in accordance with SAE ,GB, DIN available. Information MORE >> Bolt Grade Markings and Strength Chart-U Bolt Grade Markings and Strength Chart-M Ball Mill
Model NO. A453 Grade 660 Connection Common Bolt Head Style Round Standard DIN, ANSI, JIS, GOST Grade B7 Application Machinery Finish Polishing Other Material ASTM A193 B7 Stud Bolt with Two ASTM A194 2h Nuts Stud Bolt Esparragos Stud...
About Fastener Materials and CoatingsBolt Grade Markings and Strength Chart US Bolt Head/Wrench Size Recommended Bolt Torque Standard Thread Length for Bolts Threads Per Inch Table (Coarse and Fine) US Bolt Diameter and Thread Chart Our printable 'lay-over' sizing chart for identifying US bolt dia...
Hex Bolt Identification, Markings and Strength Chart. Additonal information on bolts is located at the bottom of the webpage.Note: Some bolts share identical head identification and have significantly different strengths.Identification Grade Mark Specification Description Material Proof Load Yield Strength ...
Determine the grade of the bolt. The grade describes the grade of metal or the type of material used to manufacture the bolt. The grade of the bolt may be indicated by markings on the head. In the example, Grade 2 signifies a soft steel was used to make the bolt. ...
have radial markings machined on the head of the bolt that indicate bolt grade. A grade 2 bolt has no markings, a grade 5 bolt will have three markings, while a grade 8 bolt will have six lines. Metric bolts are more simply identified: the class is explicitly stamped on the bolt head...
ASTM A193 Grade B7 Black Heavy Stud Bolt 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 ...
• Special Markings on products• Special packagingThe company adopts ISO9001:2000 quality management system.Company tenet:quality first,customer first,integrity and innovation.We believe that we can establish long-term and stable friendly...