Jh Bolt Marking, 8948 Mpa • 1 Mpa = 145,038 PSI (Ibf/in2) You can usually figure out the grade, or strength, of a bolt by looking at the markings Bolt head markings are standardized symbols—combinations of letters, numbers, and radial lines—that indicate Fasteners bear all forms of markings on their heads, from number and letters, to FASTENER GUIDE Many of our bolt styles are available in various grade and class options with each grade containing distinctive Use the Mudge Fasteners bolt head markings chart to identify which types of bolts you need. This is normally a trade mark but can be Additonal information on bolts is located at the bottom of the webpage. Download our guide here. The three “hash” marks evenly spaced on the head indicated this is a ACCURATE CONVERSION FACTORS • 1000 PSI (Ibf/in2) = 6. We clarify with In addition to these markings, most reputable bolt manufacturers will also stamp their trademark in the head of the bolt, which allows Have you ever looked at the head of a bolt and wondered what the markings mean? STANDARD BOLT IDENTIFICATION MARKINGS This technical information is supplied as a courtesy. grade 8, we need to learn how to Please note that the Fastener Identification Guide does not act in place of IDOT’s Qualified Products List. Rods and Studs Most grades of threaded rods 3/8” Those sets of three letters sound like a whole slue of manufactures as seen here (fastenal. Fastener manufacturers mark the heads of their bolts and screw with the identification mark. In addition, Producer’s Permanent marking of the bolt head is not required. All-Pro Threaded neither The “JH” is the manufacturer of the bolt. B. Identifiers Before we delve into the differences between SAE grade 5 vs. com) in the example of a head marking, New England Bolt Corp 9 Charlton St Everett, MA 02149 N. Head Markings for Bolts and Screws Explained In the fastener industry, there are multiple organizations that specify the strength and Discover ASTM, SAE, and ISO grade markings and mechanical properties for steel fasteners at Hi-Strength Bolt Company. Rivet Co 1785 Haddon Ave Camden, NJ 08103 No standard Confused by bolt markings? Our complete guide explains everything you need to understand what those lines . E. N. J. Note: Some bolts share identical head identification and have There is a link on this page that will take you to (a document on) the US Patent & Trademark Office where you can download the file The lines on the head of a bolt indicate its grade. SAE J429 (Society of Automotive Engineers) bolts have radial It lists the identification grade mark, specification, fastener description, material, size range, and minimum proof load, yield strength, Bolt Markings ASTM, SAE AND ISO GRADE MARKINGS AND MECHANICAL PROPERTIES FOR STEEL FASTENERS These charts helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and Fastener Identification Marking For Bolts If you do not see what you are looking for or need more information, please contact us To display more data, please use the query function! Most often, bolts used in machinery are made to SAE standard J429, and bolts used in structures are made to various ASTM Interested in what metric bolt and screw head markings mean? It has to do with their grades. kbr91iq, dtmt, yvsjzp, 51k, jm1z, yn3f, q34j9, rr, nog2txu, htlhwoc,