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    Scope

    SAE J429 is the standard specification for inch-series steel bolts, screws, studs, SEMS screws and U-bolts in sizes up to and including 1-1/2 inches. They are generally manufactured from variants of medium carbon steel. SAE J429 bolts from Glaser and Associates are available in three grades, 2, 5 and 8, offering different mechanical and chemical properties for specific applications.

    These bolts are designed, manufactured and tested to comply with the standards set by SAE J429 for proof load, yield strength, tensile strength, elongation, surface roughness and core hardness.

    Grades

    • Grade 2 – bolts manufactured from low or medium carbon steel.
    • Grade 5 – bolts manufactured from medium carbon steel.
    • Grade 8 – bolts manufactured from medium carbon alloy steel.

    The properties tables below provide more information on the differences between the grades.

    Applications

    SAE J429 bolts from Glaser and Associates meet the mechanical and material requirements for fasteners used in the automotive and related industries.  For applications that require specific levels of fatigue behavior, corrosion resistance or impact properties, please consult our technical department.

    Properties

    Grade

    Nominal size, inches

    Full size proofload, psi

    Yield strength, min, psi

    Tensile strength, min, psi

    Elong, min, %

    RA, min, %

    Core hardness, Rockwell

    2

    ¼  - ¾ inch

    55,000

    57,000

    74,000

    18

    35

    B80 to B100

    ¾ - 11/2 inch

    33,000

    36,000

    60,000

    18

    35

    B70 to B100

    5

    ¼ - 1 inch

    85,000

    92,000

    120,000

    14

    35

    C25 to C34

    1 - 1-1/2 inches

    74,000

    81,000

    105,000

    14

    35

    C19 to C30

    8

    ¼ - 1-1/2 inches

    120,000

    130,000

    150,000

    12

    35

    C33 to C39

     

    Grade

    Material

    Carbon, %

    Phosphorus, %

    Sulfur, %

    2

    Low or medium carbon steel

    0.15 - 0.55

    0.030 max

    0.050 max

    5

    Medium carbon steel

    0.28 - 0.55

    0.030 max

    0.050 max

    8

    Medium carbon alloy steel

    0.28 - 0.55

    0.030 max

    0.050 max

     

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