McMaster-Carr logo
    System of Measurement
    System of Measurement
    Inch
    Metric
    Spring Rate
    Spring Rate
    click to learn more about
    0.1 lbs./in.
    0.29 lbs./in.
    0.3 lbs./in.
    0.33 lbs./in.
    0.43 lbs./in.
    0.46 lbs./in.
    0.56 lbs./in.
    0.6 lbs./in.
    0.66 lbs./in.
    0.76 lbs./in.
    0.77 lbs./in.
    0.78 lbs./in.
    0.79 lbs./in.
    0.85 lbs./in.
    0.89 lbs./in.
    0.9 lbs./in.
    1.04 lbs./in.
    1.09 lbs./in.
    1.1 lbs./in.
    1.11 lbs./in.
    1.18 lbs./in.
    1.23 lbs./in.
    1.26 lbs./in.
    1.31 lbs./in.
    1.4 lbs./in.
    1.43 lbs./in.
    1.7 lbs./in.
    1.71 lbs./in.
    1.72 lbs./in.
    1.95 lbs./in.
    2.01 lbs./in.
    2.05 lbs./in.
    2.15 lbs./in.
    2.2 lbs./in.
    2.28 lbs./in.
    2.4 lbs./in.
    2.45 lbs./in.
    2.47 lbs./in.
    2.5 lbs./in.
    2.55 lbs./in.
    2.6 lbs./in.
    2.7 lbs./in.
    2.71 lbs./in.
    2.78 lbs./in.
    2.86 lbs./in.
    2.87 lbs./in.
    2.88 lbs./in.
    3 lbs./in.
    3.1 lbs./in.
    3.15 lbs./in.
    3.3 lbs./in.
    3.41 lbs./in.
    3.45 lbs./in.
    3.5 lbs./in.
    3.53 lbs./in.
    3.62 lbs./in.
    3.65 lbs./in.
    3.7 lbs./in.
    3.8 lbs./in.
    3.85 lbs./in.
    3.92 lbs./in.
    4 lbs./in.
    4.05 lbs./in.
    4.1 lbs./in.
    4.3 lbs./in.
    4.36 lbs./in.
    4.5 lbs./in.
    4.6 lbs./in.
    4.8 lbs./in.
    4.93 lbs./in.
    5 lbs./in.
    5.05 lbs./in.
    5.1 lbs./in.
    5.15 lbs./in.
    5.2 lbs./in.
    5.3 lbs./in.
    5.36 lbs./in.
    5.5 lbs./in.
    5.6 lbs./in.
    5.7 lbs./in.
    5.85 lbs./in.
    5.9 lbs./in.
    5.98 lbs./in.
    6 lbs./in.
    6.1 lbs./in.
    6.13 lbs./in.
    6.2 lbs./in.
    6.3 lbs./in.
    6.5 lbs./in.
    6.6 lbs./in.
    6.8 lbs./in.
    6.9 lbs./in.
    7 lbs./in.
    7.05 lbs./in.
    7.3 lbs./in.
    7.4 lbs./in.
    7.58 lbs./in.
    7.7 lbs./in.
    8 lbs./in.
    8.1 lbs./in.
    8.2 lbs./in.
    8.29 lbs./in.
    8.3 lbs./in.
    8.4 lbs./in.
    8.5 lbs./in.
    8.6 lbs./in.
    8.75 lbs./in.
    8.79 lbs./in.
    8.9 lbs./in.
    9 lbs./in.
    9.1 lbs./in.
    9.15 lbs./in.
    9.2 lbs./in.
    9.5 lbs./in.
    9.6 lbs./in.
    9.7 lbs./in.
    9.8 lbs./in.
    9.9 lbs./in.
    9.91 lbs./in.
    9.99 lbs./in.
    10 lbs./in.
    10.5 lbs./in.
    10.7 lbs./in.
    10.73 lbs./in.
    10.8 lbs./in.
    11 lbs./in.
    11.1 lbs./in.
    11.2 lbs./in.
    11.3 lbs./in.
    11.5 lbs./in.
    11.7 lbs./in.
    11.9 lbs./in.
    12 lbs./in.
    12.1 lbs./in.
    12.3 lbs./in.
    12.36 lbs./in.
    12.5 lbs./in.
    12.6 lbs./in.
    13 lbs./in.
    13.2 lbs./in.
    13.3 lbs./in.
    13.5 lbs./in.
    13.95 lbs./in.
    14 lbs./in.
    14.25 lbs./in.
    14.5 lbs./in.
    14.8 lbs./in.
    14.85 lbs./in.
    14.95 lbs./in.
    15 lbs./in.
    15.5 lbs./in.
    15.7 lbs./in.
    15.8 lbs./in.
    15.9 lbs./in.
    16 lbs./in.
    16.1 lbs./in.
    16.2 lbs./in.
    16.3 lbs./in.
    16.91 lbs./in.
    17 lbs./in.
    17.5 lbs./in.
    18 lbs./in.
    18.5 lbs./in.
    18.7 lbs./in.
    18.9 lbs./in.
    18.95 lbs./in.
    19 lbs./in.
    20 lbs./in.
    20.1 lbs./in.
    20.5 lbs./in.
    20.9 lbs./in.
    21 lbs./in.
    21.07 lbs./in.
    21.5 lbs./in.
    21.87 lbs./in.
    21.9 lbs./in.
    22 lbs./in.
    22.25 lbs./in.
    22.5 lbs./in.
    22.6 lbs./in.
    22.96 lbs./in.
    23 lbs./in.
    23.2 lbs./in.
    23.5 lbs./in.
    24 lbs./in.
    24.2 lbs./in.
    24.3 lbs./in.
    24.95 lbs./in.
    25 lbs./in.
    25.1 lbs./in.
    25.3 lbs./in.
    25.4 lbs./in.
    26 lbs./in.
    26.3 lbs./in.
    26.5 lbs./in.
    27 lbs./in.
    28 lbs./in.
    28.1 lbs./in.
    28.16 lbs./in.
    28.4 lbs./in.
    29 lbs./in.
    30.09 lbs./in.
    30.27 lbs./in.
    30.7 lbs./in.
    31 lbs./in.
    31.6 lbs./in.
    31.9 lbs./in.
    32.49 lbs./in.
    32.8 lbs./in.
    33 lbs./in.
    34 lbs./in.
    34.4 lbs./in.
    34.6 lbs./in.
    34.7 lbs./in.
    35 lbs./in.
    35.6 lbs./in.
    35.7 lbs./in.
    36.08 lbs./in.
    36.2 lbs./in.
    37 lbs./in.
    37.35 lbs./in.
    38 lbs./in.
    38.4 lbs./in.
    38.43 lbs./in.
    38.7 lbs./in.
    39.87 lbs./in.
    40 lbs./in.
    40.02 lbs./in.
    41 lbs./in.
    42.8 lbs./in.
    43 lbs./in.
    43.5 lbs./in.
    44.5 lbs./in.
    44.6 lbs./in.
    45 lbs./in.
    45.9 lbs./in.
    46 lbs./in.
    46.1 lbs./in.
    46.13 lbs./in.
    47.2 lbs./in.
    47.75 lbs./in.
    48 lbs./in.
    49 lbs./in.
    49.05 lbs./in.
    50.47 lbs./in.
    51 lbs./in.
    51.9 lbs./in.
    53.2 lbs./in.
    53.7 lbs./in.
    55 lbs./in.
    55.4 lbs./in.
    55.44 lbs./in.
    56 lbs./in.
    57 lbs./in.
    57.1 lbs./in.
    60 lbs./in.
    60.34 lbs./in.
    62.4 lbs./in.
    62.8 lbs./in.
    65 lbs./in.
    66 lbs./in.
    71.6 lbs./in.
    72 lbs./in.
    74.55 lbs./in.
    76.8 lbs./in.
    78 lbs./in.
    90 lbs./in.
    96.88 lbs./in.
    98.7 lbs./in.
    104 lbs./in.
    104.8 lbs./in.
    107.83 lbs./in.
    108 lbs./in.
    109 lbs./in.
    110.1 lbs./in.
    113.8 lbs./in.
    120 lbs./in.
    127.29 lbs./in.
    136.73 lbs./in.
    186.82 lbs./in.
    210 lbs./in.
    221 lbs./in.
    235.77 lbs./in.
    274.8 lbs./in.
    294.81 lbs./in.
    311.7 lbs./in.
    335.1 lbs./in.
    388.8 lbs./in.
    420.5 lbs./in.
    491 lbs./in.
    516.7 lbs./in.
    564.6 lbs./in.
    1,200 lbs./in.
    1,255 lbs./in.
    0.025 lbs./mm
    0.058 lbs./mm
    0.06 lbs./mm
    0.09 lbs./mm
    0.11 lbs./mm
    0.124 lbs./mm
    0.13 lbs./mm
    0.14 lbs./mm
    0.17 lbs./mm
    0.184 lbs./mm
    0.21 lbs./mm
    0.26 lbs./mm
    0.27 lbs./mm
    0.3 lbs./mm
    0.301 lbs./mm
    0.33 lbs./mm
    0.35 lbs./mm
    0.36 lbs./mm
    0.41 lbs./mm
    0.45 lbs./mm
    0.52 lbs./mm
    0.585 lbs./mm
    0.66 lbs./mm
    0.68 lbs./mm
    0.81 lbs./mm
    0.89 lbs./mm
    0.899 lbs./mm
    0.9 lbs./mm
    1.07 lbs./mm
    1.28 lbs./mm
    1.31 lbs./mm
    1.4 lbs./mm
    1.59 lbs./mm
    1.972 lbs./mm
    2.01 lbs./mm
    2.19 lbs./mm
    2.69 lbs./mm
    2.945 lbs./mm
    3.22 lbs./mm
    4.406 lbs./mm
    4.65 lbs./mm
    5.081 lbs./mm
    6.463 lbs./mm
    7.014 lbs./mm
    7.3 lbs./mm
    8.43 lbs./mm
    10.47 lbs./mm
    10.791 lbs./mm
    14.29 lbs./mm
    19.109 lbs./mm
    24.954 lbs./mm
    31.473 lbs./mm
    RoHS (Restriction of Hazardous Substances)
    RoHS (Restriction of
    Hazardous Substances)
    RoHS Compliant
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense Acquisition
    Regulations Supplement)
    click to learn more about
    DFARS Specialty Metals
    COTS-Exempt
    learn more about DFARS Specialty Metals COTS-Exempt by pressing accesskey, i.
    REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)
    REACH (Registration,
    Evaluation, Authorization
    and Restriction of Chemicals)
    REACH Compliant
    Specifications Met
    Specifications Met
    DIN 2095
    DIN 17223
    DIN 2098
    Number of Sizes
    Number of Sizes
    6
    20
    42
    50
    108
    216
    Container Type
    Container Type
    Plastic Box
    Plastic Cabinet
    Plastic Tube
    Number of Pieces
    Number of Pieces
    12
    126
    200
    216
    401
    840