Full Answer
What is SAE Grade 5?
SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength.SAE GradeSize Range (in)Minimum Tensile Strength (103 psi)21/4 - 3/4 7/8 - 1 1/274 6051/4 - 1 1 1/8 - 1 1/2120 1055.21/4 - 112071/4 - 1 1/21333 more rows
What does grade 5 Mean on a bolt?
Grade 5 Bolts and fasteners are made of medium strength carbon steel and are specified under the Society of Automotive Engineers (SAE). If your application calls for heavier materials, you may need Grade 8 Bolts because they are the hardest and are often used in heavy manufacturing applications.
What type of steel is Grade 5?
medium carbon zinc plated alloy steelGrade 5 alloy steel is a medium carbon zinc plated alloy steel that is heat treated to increase hardness. Grade 5 bolts have three (3) evenly spaced hash marks on the head markings (manufacturers mark may also be included).
How good is a Grade 5 bolt?
A grade 5 bolt is distinguished by 3 radial lines and promises tensile strengths between 105,000 and 120,000 psi. They are most commonly found in automotive applications. This sought-after grade 8 bolt can be distinguished by six raised dashes.Oct 21, 2019
Will Grade 5 bolts rust?
Many other grades exist but are used far less often. Grade 2, 5, and 8 are usually plated with a slightly blue-ish or yellow zinc coating, or are galvanized, to resist corrosion.
Is a Grade 5 bolt stronger than a Grade 8?
Grade 8 bolts have been hardened more than grade 5 bolts. Thus they are stronger and are used in demanding applications such as automotive suspensions.
What does SAE J429 mean?
Society of Automotive Engineers specification for fastenersSAE J429 is a Society of Automotive Engineers specification for fasteners. SAE J429 covers fasteners sizes up to 1-1/2" inclusive. Used in automotive and related industries, these fasteners can be found in small quantities in automotive and home improvement stores.
What is SAE grade bolts?
SAE Bolt Grades—The standards for bolt strength grades in the U.S. are set according to a system developed by the SAE (Society of Automotive Engineers). The SAE marking system uses raised dashes on the bolt head to indicate strength.
Are Grade 5 bolts stainless?
Stainless commonly comes in grades 18.8 (304) or T316. Stainless steel bolts are rated for corrosion resistance. Bolt strength is rated in PSI (pounds per square inch). A stainless steel bolt has the same PSI rating as a grade 5 bolt (125,000 PSI).
What is the total strength of Grade 5?
J429 Mechanical PropertiesGradeNominal Size, inchesTensile Strength, min, psi21/4 thru 3/474,000Over 3/4 thru 1-1/260,00051/4 thru 1120,000Over 1 thru 1-1/2105,0003 more rows•Nov 17, 2020
Will a Grade 5 bolt shear?
The Grade 5 bolt will therefore always fail first whether in tension or shear. The only “gotcha” with the Grade 8 bolt is that, being harder, it is more “notch sensitive.” This means it is more sensitive to build up of stress concentrations caused by notches, nicks, and gouges leading to fatigue and failure.
How many marks is a Grade 5 bolt?
Bolt Grade Markings and Strength ChartHead MarkingGrade and MaterialMechanical PropertiesProof Load (psi)3 Radial LinesGrade 5 Medium carbon steel, quenched and tempered74,0006 Radial LinesGrade 8 Medium carbon alloy steel, quenched and tempered120,000Grade A325 Carbon or alloy steel with or without boron85,00018 more rows