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bolt identification and grade markings Applications:

bolt identification and grade markings is extensively used in a variety of industries. bolt identification and grade markings is widely used in structural applications, including bridges, buildings and construction equipment and more.

bolt identification and grade markings Specification:

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bolt identification and grade markings - DB Building

to requiring a 307A marking on the head in addition to the manufacturers identification.The dimensional requirements are contained in ANSI B18.2.1,Square and Hex Head Bolts and Screws Inch Series.TDS-005A 2-15-08.bolt identification and grade markings SAE J429 Grade 2 ASTM A307 Grade AUS BOLTS(HEAD MAUS BOLTS(GRADE AUS BOLTS(NOMINAUS BOLTS(MECHANINo MarkingsGrade 2 Low or mediu1/4 thru 3/455,000No MarkingsGrade 2 Low or mediuOver 3/4 thru 1-1/233,0003 Radial LinesGrade 5 Medium carb1/4 thru 185,0003 Radial LinesGrade 5 Medium carbOver 1 thru 1-1/274,000 23 rows on boltdepotExplore furtherUS Bolts - Tensile Strength and Proof LoadsengineeringtoolboxGrades of Bolts - The Home DepothomedepotDetermining Bolt Grades and Understanding Head MarkingsnutsandboltsHex Bolt Identification,Markings and Strength Chart Table engineersedgeStrength and Grades of Fasteners QuadratecquadratecRecommended to you based on what's popular FeedbackSTANDARD BOLT IDENTIFICATION MARKINGSGrade B5 Bolts,Screws,Studs for High Temperature Service AISI 501 14 thru 4 80,000 100,000 ASTM A193 Grade B6 Bolts,Screws,Studs for High Temperature Service AISI 410 14 thru 4 85,000 110,000 ASTM A193 Grade B7 Bolts,Screws,Studs forSteel Bolts - SAE Grades - Engineering ToolBoxRelated Topics .Mechanics - Forces,acceleration,displacement,vectors,motion,momentum,energy of objects and more; Fasteners - Bolts,nuts and threaded rods - torque,tension and loads; Related Documents .ASME/ANSI B16.5 - Flanges and Bolt Dimensions Class 150 to 2500 - Diameters and bolt circles for standard ASME B16.5 flanges - 1/4 to 24 inches - Class 150 to 2500

SPECIFICATIONDESCRIPTIONMATERIALPROOF LOADSAE J429 Grade 5 ASTM A449Bolts,Screws,StudsMedium Carbon Steel85,000 74,000SAE J429 Grade 5.1SemsLow or Medium Carbo85,000SAE J429 Grade 5.2Bolts,Screws,StudsLow Carbon85,000ASTM A325 Type 1High Strength StructuralMedium Carbon85,000 74,000 38 rows on engineersedgeGrades of Bolts - The Home Depot

Bolt Grade Markings The most common grading system used for bolts in the U.S.is the SAE system,but you can find metric grading systems as well.There are several grades of bolts but the three common grades for SAE are 2,5 and 8.The common class (grades) forRelated searches for bolt identification and grade markingsbolt grades identificationgrade 8 bolt markingsmetric bolt identification markingsnut and bolt grade markingscarriage bolt grade markingsmetric bolt grade markingsgrade 8 bolt markings trianglebolt markings chartSome results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextRelated searches for bolt identification and grade markingsbolt grades identificationgrade 8 bolt markingsmetric bolt identification markingsnut and bolt grade markingscarriage bolt grade markingsmetric bolt grade markingsgrade 8 bolt markings trianglebolt markings chartSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextHow To Identify And Measure BoltsThe other markings on the head arent relevant,usually just markings of the manufacturer.Grade 8 bolts have the strength of about 150,000 psi.Stainless bolts have the same strength as the grade 8 bolts.A lot of people think theyre stronger but theyre actually not.They do,however,resist rust better.A grade 9 bolt isnt very

Q U ALITY ISO - Bolts Screws Other Fasteners

307AASTM A307 Grade A Bolts,screws,studs (general engineering) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B100.307BASTM A307 Grade B Bolts,screws,studs (flanged joints) Low or medium carbon steel 1/4 - 4 33000 60000 36000 B69 B95.Note:Manufacturers identification mark also stamped where appropriate.Metric Bolt Grade Markings and Steel Strength Chart Head Markings Metric Bolt Class Mechanical Properties Proof Load (MPa) Min Yield (MPa) Min Tensile Strength (MPa) Class 8.8 Medium carbon steel,quenched and tempered 580-600 640-660 800-830 Class 10.9 Alloy Steel,quenched and tempered 830 940 1040 Class 12.9 Alloy Steel,quenched and tempered 970 1100 1220 A2 StainleImages of Bolt Identification and Grade Markings zerofastBolt Head Markings Chart zero products inc.zerofastBolt Head Markings Chart zero products inc.gtsparkplugsEZ Bolt Grade Markings GTSparkplugsthirdgenwhat grade and size bolts should i use ? - Third Generation F-Body Message Boardsforums.qrzRohn 25G Tower Replacement Bolts QRZ ForumsautozoneRepair Guides Fasteners,Measurements And Conversions Bolts,Nuts And Other Threaded imagesBolt Depot - Bolt Grade Markings and Strength Chart23 rows bolt identification and grade markings#0183;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 3/4 55,000 57,000 74,000 Over 3/4 thru 1-1/2 33,000 36,000 60,000 3 Radial Lines

Identification Marks for Hex and Heavy Hex Nuts

Title Identification Marks for Hex and Heavy Hex Nuts Author Fastener Mart Created Date 8/12/2006 10:47:21 PMHow to define what type of bolt youre using.A Grade 2 bolt is the softest grade of steel bolts.There are no markings on the head.A Grade 5 bolt can be identified by the three lines.Grade 5 is heat-treated.It is made of medium carbon steel,quenched and tempered.A Grade 8 bolt can be identified by the six lines.It consists of medium carbon alloy steel,heat-treated,quenched and How to Identify Grade 8 Bolts DoItYourselfLook for Bolt Markings If you do not have a magnet you can still identify Grade 8 bolts by brushing the head of the bolt using a wire brush and counting its radial lines.There are six radial lines on the heads of Grade 8 bolts.Length is measured from under the head.

How do I determine bolt grades? - North 40 Outfitters

Grade 2 Bolts.Grade 2 bolts are the most common grade of bolts and are also the least expensive.Grade 2 bolts are found mostly in household fasteners like carriage bolts,and machine screws.The usually have no head marking,but may sometimes contain manufacturer markings.Grade 5 Bolts.Grade 5 bolts are commonly found in many automotive How To Understand Markings on Stainless Steel Nuts BoltsStainless steel nuts and bolts have markings on them to help the user identify their properties.We have put together a quick guide below on how to decipher the code.The three marks you will most commonly find are as follows; the name of the manufacturer (or an abbreviated version) The grade of stainless steel,i.e.A2 or A4.Hex Bolt Identifying Marks,Material Grade and Mechanical Jul 24,2010 bolt identification and grade markings#0183;Hex Bolt Identifying Marks,Material Grade and Mechanical Properties Are you confused about the modest hex bolt,or are you wondering what all those marks mean? This table will help you identify any hex bolt right on the nuts ,and it will also tell you about the material grade and mechanical properties.

Grades of Bolts - Bolt Grade Marking Chart AFT Fasteners

Grades of Bolts - Bolt Grade Markings Bolt Strength Chart This chart helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and hardness of common grade bolts.Please note the bolt heads may also include the manufacturer's identification stamp,especially with high strength bolts.Grade Identification Markings for Nuts Specification of Bolt (A) Finish (B) Size (In.) Recommended (C) Heavy Hex ASTM A307 Plain 1/4 to 1-1/2 Grade A Hex Nut A,C,DH Grade A Zinc Coated over 1-1/2 to 2 Grade A Heavy Hex Nut C,DH over 2 to 4 Grade A Heavy Hex Nut C,DH ASTM A307 Plain 1/4 to 1-1/2 Grade A Heavy Hex Nut C,DH Grade B Zinc Coated over 1-1/2 to 2 Grade A Heavy Hex Nut C,DHGrade Identification Markings for Nuts Specification Grade Identification Markings for Nuts Specification Material Nominal Proof Load Grade Size Stress Zinc Identification (Inches) Plain (psi) Coated Min.Max.Marking ASTM A563 - Grade 0 Carbon Steel 1/4 - 1-1/2 69,000* 52,000* B55 C32 ASTM A563 - Grade A Carbon Steel 1/4 -

GRADEMATERIALNOMINAL SIZE DIAMETERPROOF LOAD PSIGrade 2 No Radial LinesLow or Medium Carbo1/4 to 3/455,000Grade 2 No Radial LinesLow or Medium CarboOver 3/4 thru 1 1/233,000Grade 5 3 Radial LinesMedium Carbon Steel1/4 to 185,000Grade 5 3 Radial LinesMedium Carbon SteelOver 1 thru 1 1/274,000 9 rows on nutsandboltsMetric Bolts Grades - Bolts Screws Other Fasteners

Common METRIC Steel Bolts Identification Mark 4.6 X* 5.8 X* 8.8 X* 10.9 X* or 12.9 1 2.9 M X* Product Specification Class 4.6 Class 5.8 Class 8.8 Class 10.9 Class 12.9 Socket Head Cap Screw Material Low/Medium Carbon Steel Low/Medium Carbon Steel Heat Treated Medium Carbon Steel Heat Treated Alloy Steel Heat Treated Alloy Steel Heat Treated Tensile Strength Minimum 400 MPaFile Size 1MBPage Count 8Determining Bolt Grades and Understanding Head Markings9 rows bolt identification and grade markings#0183;The Nut and Bolt Solution Series Identifying bolt grades and head markings for US gradesFile Size 1MBPage Count 1Bolt Grades And Markings - EICACBOLT GRADE MARKING AND STRENGTH CHART ISO property classes for steel bolts,screws,studs and nuts The strength of standard ISO metric steel bolts,studs and nuts is readily identified by means of a numerical code.Property classes for steel bolts,screws and studs

File Size 1006KBPage Count 1People also askWhat are the markings on the head of a bolt?What are the markings on the head of a bolt?Most bolt markings are found on the fastener head.They can be a combination of numbers and letters or a pattern of lines.Nuts tend to have much smaller markings,although they are also made of numbers and letters or lined patterns.Building Fasteners FAQ What Do Fastener Markings Mean?Fasteners Bolt Grades,Strength Materials

These markings on this head indicate,these 1-2-3-4-5-6 slashes that you see here,those slashes indicate that that's a grade 8 bolt.These letters that you're seeing is the manufacturer's markings,so they can identify,should the bolt fail,they can identify if this is their bolt or not.Fasteners Bolt Grades,Strength MaterialsBolt Grades Head Markings Head markings on a bolt are a quick way to determine bolt grade.Some bolts will have additional markings that indicate the manufacturer; the most prized bolts have clean heads with limited markings.Grade 2 / Grade A.Grade A and Grade 2 are the most common grades of zinc plated alloy steel.

Fastener Identification Markings Bolts Strength Requirements

Fastener Identification Markings Bolts Strength Requirements.Grade Marking Specification Material and Treatment Nominal Size (In.) Mechanical Properties Hardness Rockwell; Proof Load Min (ksi) Yield Strength Min (ksi) Tensile Strength Min (ksi) Elong % Min RA % Min Min Max; SAE J429 Grade 1:Fastener Identification Chart Atlanta Rod Bolts Grade Marking Specification Material and Treatment Nominal Size (In.) Mechanical Properties Hardness Rockwell Proof Load Min (ksi) Yield Strength Min (ksi) Tensile Strength Min (ksi) Elong % Min RA % Min Min Max SAE J429.Grade 1 Low or Medium Carbon Steel 1 4 1 1 2 33 36 60 18 35 B70 B100 A307.Grade A 1 Fastener Grade Identification Marks Metal Construction bolt identification and grade markings#0183;Contact Us.Direct Number (817) 467-1377 800 Number (800) 361-6627 Fax Number (817) 467-5365 1916 Peyco Drive North Arlington,TX 76001.Email:

FASTENER REFERENCE GUIDE

Grade Identification Marking Min.Max.4.6 Low or medium carbon steel M1.6 - M39 225 240 400 (58,000 PSI) B67 B95 8.8 Medium carbon steel quenched tempered M1.6 - M16 580 640 800 (116,000 PSI) C22 C32 M18 - M39 600 660 830 (120,000 PSI) C23 C34 10.9 Alloy steel quenched tempered M1.6 - M39 830 940 1040 (150,800 PSI) C32 C39 12.9FASTENER IDENTIFICATION MARKINGS ASTM,SAE,ISOIn addition to the indicated grade marking,all grades,except A563 grades O,A and B,must be marked for manufacturer identification.The markings shown for all grades of Al 94 nuts are for cold formed and hot forged nuts.When nuts are machined from bar stock theCompliance - Electronic Fasteners,Inc.x Bolt 1 550 Hupp warren,Ml 48089 End Ot pont optanal.parts.parts A.J.Fasteners,Inc 252 Kruse Ave Monrovia,CA 91016 Akko Fastener,Inc 6855 Cornell Rd Cincinnati.OH 45242 Standard Metric marking marking marking Albany Fasteners/ Pawtucket Fastener DIV idantiKes Grade C (61 Equally spaced stakes identify Grade B,Elco Industries,Inc

Compliance - Electronic Fasteners,Inc.

x Bolt 1 550 Hupp warren,Ml 48089 End Ot pont optanal.parts.parts A.J.Fasteners,Inc 252 Kruse Ave Monrovia,CA 91016 Akko Fastener,Inc 6855 Cornell Rd Cincinnati.OH 45242 Standard Metric marking marking marking Albany Fasteners/ Pawtucket Fastener DIV idantiKes Grade C (61 Equally spaced stakes identify Grade B,Elco Industries,Inc Cheat Guide Chart - Bolts,Screws,Washers,Nuts,DriveDec 20,2013 bolt identification and grade markings#0183;Working on a project and trying to find the name of a special bolt type? We have the charts to help you identify the many different types of bolts and screws for just about any project.Using the proper specific bolt type is very critical when working on a wood or metal project.Knowing the Cheat Guide Chart Bolts,Screws,Washers,Nuts,Drive Charts Read More bolt identification and grade markings#187;Bolt Identification Guide - First Call Auto SupplyMetal Grade.How strong is that bolt? In the case of hex head bolts,most of them come with markings.Metric bolts have numbers,standard bolts have little lines,and rusty bolts good luck.Tensile strength is is the maximum amount of stress a bolt can endure from being stretched or pulled until it fails.

Bolt Head Markings and What They Mean - Wilson-Garner

Manufacturer Head MarkingsFastener StandardsSome Examples SAE J429 Grade 2,Grade 5,and Grade 8Further ReadingThe Fastener Quality Act mandates that manufacturers mark each fastener with a symbol to identify the company that made it.Each company has a unique identifier that they stamp onto the head of all the fasteners that they make.Of course,there are exceptions to this law,such as fasteners that are too small to mark,but dont worry about it.Because each fastener is uniquely marked by its maker,the part can easily be traced back to its manufacturer should a problem occur.This traceability serves to instill a senSee more on wilsongarnerFASTENER IDENTIFICATION GUIDEINSTRUCTIONS FOR IDENTIFICATION FOR BOLTS AND STUDS SPECIFICATION AND MATERIAL CODES GRADE MARKING REQUIRED MARKINGS ASTM A 490 Type 2 Heavy Series .A 4 9 0 X Symbol for identification of grade,i.e.,A490,applied to head.Manufactures identification mark,e.g.,X,applied to head (raised or depressed at option of manufacturer).Bolt Head Markings And Grades - ASMC IndustrialBolt Head Markings And Grades .Head Marking Grade and Material Nominal Size Range (inches) Mechanical Properties; Proof Load (psi) Min.Yield Strength (psi) Min.Tensile Strength (psi) US Bolts No Markings Grade 2.Low or medium carbon steel.1/4 thru 3/4 55,000 57,000 74,000 Over 3/4 thru 1-1/2 33,000 36,000:Bolt Head Identification and Torque Specs - Bolthead Bolt Identification Bolthead Markings Typically replacing a lower grade bolt with a stronger bolt is generally acceptable however there are instances when a lower grade bolt is used to handle certain types of loads that might shear a harder bolt.If quality and strength is a concern,stick with marked bolts.

Bolt Head Identification and Torque Specs - Bolthead

Bolt Identification Bolthead Markings Typically replacing a lower grade bolt with a stronger bolt is generally acceptable however there are instances when a lower grade bolt is used to handle certain types of loads that might shear a harder bolt.If quality and strength is a concern,stick with marked bolts.Bolt Grades And Markings - EICACBOLT GRADE MARKING AND STRENGTH CHART.UNIFIED BOLTS MECHANICAL PROPERTIES; HEAD MARKING GRADE AND MATERIAL Nominal Size Range (inches) Proof Load (psi) Min.Yield Strength (psi) Min.Tensile Strength; NO MARKINGS GRADE 2.Low or medium carbon steel.1/4 thru 3/4 55,000 57,000 74,000 psi.510 Mpa.Over 3/4 thru 1-1/2 33,000 36,000 60,000 Bolt Grade Markings and Strength ChartUS Bolts No Markings Grade 2 Low or medium carbon steel 1/4 thru 3/4 _____ Over 3/4 thru 11/2 55,000/ 380 _____ 33,000 /230 57,000 / 395 _____ 36,000 / 250 74,000 / 510 _____ 60,000 / 415 3 Radial Lines Grade 5 Medium Carbon Steel,Quenched

Bolt Depot - Selecting Fastener Materials - Steel Grades

For a list of the most common grade markings see our Material Grade Identification and Properties Chart.Note that,in addition to the grade marking,many bolts also have a manufacturer's mark.Grade 2.Grade 2 is a standard hardware grade steel.This is the most common grade of steel fastener and is the least expensive.Bolt Stud Grade MarkingsBolt Stud Grade Markings ID Grade Mark Specification Material Nominal Size Range (inches) Tensile Min.(ksi) Yield Min.(ksi) Proof Load (ksi) SAE J429 Grade 2 Low or Medium Carbon Steel 1/4 3/4 7/8 1-1/2 74 60 57 36 55 33 ASTM A307 Grade AASTM,SAE and ISO Grade Markings for Steel Fasteners In addition to the indicated grade marking,all grades,except A563 grades O,A and B,must be marked for manufacturer identification.The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts.When nuts are machined from bar

results for this questionWhat do the markings on a stainless steel bolt mean?What do the markings on a stainless steel bolt mean?The marks shown on the head of a bolt represent the hardnessof the bolt.No marks indicate the softest bolt,whereas three marks indicate medium hardness and six marks indicate the hardest.What grade are stainless steel bolts? Usually,stainless steel bolts come in 18-8/304 stainless steel or 316 stainless steel grades.Bolts - Marsh Fasteners results for this questionWhat are bolt grade markings?What are bolt grade markings?The grade mark is a standardised mark that identifies the material properties that the fastener meets.For example 307A on a bolt head indicates that the fastener properties conform to the ASTM A307 Grade A standard.The bolt head shown at the side indicates that it is of property class 8.8 and ML is the manufacturers mark.What are the marks shown on the head of a bolt - Experts123 results for this questionHow do you identify bolts?How do you identify bolts?How to Identify a Metric Bolt.You identify grade by looking at the head of the bolt.Hex bolts will have 10.9 (equivalent to SAE grade 8),8.8 (equivalent to SAE grade 5),or no markings (equivalent to SAE grade 2).Diameter and length are identified in millimeters.For instance,10 x 110,10.9 would be a hex head capscrew 20-mm in diameter,How to Identify a Metric Bolt Fastener Sales Engineering

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38 rows bolt identification and grade markings#0183;Grade B8M Bolts,Screws,Studs AISI 316-50,000 thru 95,000 90,000 thru 125,000

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