What does SAE J429 mean?
SAE 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 J429 Grade 8?
SAE J429 Grade 8 hex head cap screws are common, high-strength fasteners manufactured from heat-treated medium carbon alloy steel, quenched and tempered. Grade 8 cap screws are available in diameters from 1/4″ through 1 1/2″ inclusive. Dimensional specifications are governed by ASME B18.
What is the difference between Grade 2 and Grade 5 bolts?
Grade 2 is a standard hardware grade steel. This is the most common grade of steel fastener and is the least expensive. Except a possible manufacturer’s mark,Grade 2 bolts have no head marking. Grade 5 bolts are hardened to increase strength and are the most common bolts found in automotive applications.
What is the Rockwell hardness of a Grade 5 bolt?
Carbon Steel Bolt Grade Markings
| Specification | Material | Rockwell Hardness (max) |
|---|---|---|
| ASTM A307 – Grade B | Low or Medium Carbon Steel | B95 |
| SAE J429 – Grade 5 | Medium Carbon Steel, Quenched and Tempered | C34 |
| ASTM A449 – Type 1 | Medium Carbon Steel, Quenched and Tempered | C30 |
| 235 |
What grade is a A325 bolt?
SAE grade 5
As a comparison, the ASTM A325 bolt is roughly equivalent to the SAE grade 5. A grade 8 bolt would be one that meets ASTM A490 standards. The A325 bolt strength, or SAE grade 5 bolt strength, is usually used for structural bolting projects.
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.
What metal is a Grade 5 bolt?
alloy steel
Grade 5. Grade 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).
What do you need to know about SAE J429?
You Are Here-> Home ->Specification->SAE J429 Specification SAE J429 covers the mechanical and material requirements for inch series fasteners used in automotive and related industries in sizes to 1-1/2” inclusive.Below is a basic summary the most common grades.
What are the requirements for a J429 bolt?
J429 Mechanical Properties. Grade 2 requirements for sizes 1/4″ thru 3/4″ apply only to bolts 6″ and shorter, and to studs of all lengths. For bolts longer than 6″, Grade 1 requirements shall apply.
What is the SAE grade for inch fasteners?
SAE J429 covers the mechanical and material requirements for inch series fasteners used in automotive and related industries in sizes to 1-1/2” inclusive. Below is a basic summary the most common grades. SAE J429 covers a number of other grades and grade variations not covered in this summary, including 4, 5.1, 5.2, 8.1, and 8.2.
What are the mechanical and material requirements for SAE?
This SAE Standard covers the mechanical and material requirements for inch-series steel bolts, screws, studs, screws for sems 1, and U-bolts 2 in sizes to 1-1/2 in. inclusive. The term “stud” as referred to herein applies to a cylindrical rod of moderate length threaded on either one or both ends or throughout its entire length.