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ASTM A194 Grade 2HM Hex Nuts | UNS Specifications
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    • ASTM A194 Grade 2HM Hex Nuts

    A194 Nuts

    ASTM A194 Grade 2HM Nuts are manufactured from Carbon Steel in accordance with ASTM A194 specification. Torqbolt is a prominent A194 Grade 2HM nut supplier in India.

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    ASTM A194 Grade 2HM Hex Nuts Properties

    ASTM A194 Grade 2HM Hex Nuts Chemical Requirements

    Grade Description
    and
    UNS Designation    		 C Mn P SE Si Cr Ni Mo Ti CbH N Cu Se V Al
    ASTM A194/A194M Grade 2HM C 0.40 min 1.00 0.040 0.050 0.40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

    ASTM A194 Grade 2HM Hex Nuts Mechanical Requirements

    ASTM A194 Grade 2HM Hex Nuts Hardness RequirementsA

    Grade and Type Completed Nuts Sample Nut after Treatment
    Brinell Hardness Rockwell Hardness Brinell Hardness, min Rockwell Hardness B Scale, min
    C Scale B Scale
    ASTM A194/A194M Grade 2HM 159 to 235 ... 84 to 99 159 84

    ASTM A194 Grade 2HM Hex Nuts Proof Load Using Threaded Mandrel (Inch Series)

    Nominal Size, in. Threads per Inch Stress Area in. 2 Proof Load, lbf A
    Grades 2HM
    Heavy HexD HexE
    1/4 20 0.0316 4 770 4 300
    5/16 18 0.0524 7 860 7 070
    3/8 16 0.0774 11 620 10 460
    7/16 14 0.1063 15 940 14 350
    1/2 13 0.1419 21 280 19 160
    9/16 12 0.182 24 570 27 300
    5/8 11 0.226 33 900 30 510
    3/4 10 0.334 50 100 45 090
    7/8 9 0.462 69 300 62 370
    1 8 0.606 90 900 81 810
    11/8 8 0.790 118 500 106 700
    11/4 8 1.000 150 000 135 000
    13/8 8 1.233 185 000 166 500
    11/2 8 1.492 223 800 201 400

    ASTM A194 Grade 2HM Hex Nuts Proof Load Using Threaded Mandrel (Metric)
    Nominal Size, mm Threads Pitch Stress Area mm 2 Proof Load, kNA
    Grades 2HM
    Heavy HexD HexE
    M6 1.0 20.1 20.8 18.7
    M8 1.25 36.6 37.9 34.0
    M10 1.50 58.0 60.0 53.9
    M12 1.75 84.3 87.3 78.4
    M14 2.0 115.0 119.0 107.0
    M16 2.0 157.0 162.5 146.0
    M20 2.5 245.0 253.6 227.8
    M22 2.5 303.0 313.6 281.8
    M24 3.0 353.0 365.4 328.3
    M27 3.0 459.0 475.1 426.9
    M30 3.5 561.0 580.6 521.7
    M36 4.0 817.0 845.6 759.8
    Grade Minimum Tempering Temperature, °F [°C]
    ASTM A194/A194M Grade 2HM 1150 [620]

    ASTM A194/A194M Proof Load for Large Heavy Hex Nuts (InchA)

    Nominal Size, in. Threads per in. Stress Area, in. 2 Proof Load, lbf B
    Grades 2HM
    15/8 8 1.78 267 000
    13/4 8 2.08 312 000
    17/8 8 2.41 361 500
    2 8 2.77 415 500
    21/4 8 3.56 534 000
    21/2 8 4.44 666 000
    23/4 8 5.43 814 500

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