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    Strut Fittings

    Spring Nut Regular Spring (With Shrink Wrap)

    THREAD SIZE (IN.) THREAD COUNT R(IN.) (IN.) TORQUE (FT.LBS.) SAFETY FACTOR APPROX. WT. (LBS.).
    1/4
    20
    11/2
    1/4
    6
    3
    0.07
    5/16
    18
    11/2
    3/8
    11
    3
    0.09
    3/8
    16
    11/2
    3/8
    19
    3
    0.09
    1/2
    13
    11/2
    3/8
    50
    3
    0.08
    1/2
    13
    11/2
    1/2
    80
    3
    0.11
    5/8
    11
    11/2
    1/2
    100
    3
    0.14
    3/4
    10
    11/12
    1/2
    125
    3
    0.15
    7/8
    9
    11/12
    1/2
    125
    3
    0.13
    PULL-OUT AND RESISTANCE TO SLIP LOADS
    12 Gauge Strut
    14 Gauge Strut
    16 Gauge Strut
    Thread Size
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    1/4″ – 20
    600
    300
    600
    300
    600
    300
    5/16″ – 18
    800
    500
    800
    400
    800
    400
    3/8″ – 16
    1000
    800
    1000
    750
    1000
    750
    1/2″ – 13
    2000
    1500
    1400
    1000
    1000
    1000
    1/2″x1/2″ – 13
    2300
    1500
    1400
    1000
    1000
    1000
    5/8″ – 11
    2500
    1500
    1400
    1000
    1000
    1000
    3/4″ – 10
    2500
    1700
    1400
    1000
    1000
    1000
    7/8″ – 9
    2500
    1700
    1400
    1000
    1000
    1000

    Spring Nut No Spring

    THREAD SIZE (IN.) THREAD COUNT THICKNESS (INC.) TORQUE (FT.LBS.) SAFETY FACTOR APPROX. WT. (LBS.).
    1/4
    20
    1/4
    6
    3
    0.06
    5/16
    18
    3/8
    11
    3
    0.09
    3/8
    16
    3/8
    19
    3
    0.08
    1/2
    13
    3/8
    50
    3
    0.07
    1/2
    13
    1/2
    80
    3
    0.10
    5/8
    11
    1/2
    100
    3
    0.13
    3/4
    10
    1/2
    125
    3
    0.13
    7/8
    9
    1/2
    125
    3
    0.12
    PULL-OUT AND RESISTANCE TO SLIP LOADS
    12 Gauge Strut
    14 Gauge Strut
    16 Gauge Strut
    Thread Size
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    1/4″ – 20
    600
    300
    600
    300
    600
    300
    5/16″ – 18
    800
    500
    800
    400
    800
    400
    3/8″ – 16
    1000
    800
    1000
    750
    1000
    750
    1/2″ – 13
    2000
    1500
    1400
    1000
    1000
    1000
    1/2″x1/2″ – 13
    2300
    1500
    1400
    1000
    1000
    1000
    5/8″ – 11
    2500
    1500
    1400
    1000
    1000
    1000
    3/4″ – 10
    2500
    1700
    1400
    1000
    1000
    1000
    7/8″ – 9
    2500
    1700
    1400
    1000
    1000
    1000

    Spring Nut Short Spring

    THREAD SIZE (IN.) THREAD COUNT R(IN.) THICKNESS (IN.) TORQUE (FT.LBS.) SAFETY FACTOR APPROX. WT. (LBS.).
    1/4
    20
    11/16
    1/4
    6
    3
    0.06
    5/16
    18
    11/16
    3/8
    11
    3
    0.09
    3/8
    16
    11/16
    3/8
    19
    3
    0.08
    1/2
    13
    11/16
    3/8
    50
    3
    0.07
    1/2
    13
    11/16
    1/2
    80
    3
    0.10
    5/8
    11
    11/16
    1/2
    100
    3
    0.14
    3/4
    10
    11/16
    1/2
    125
    3
    0.13
    7/8
    9
    11/16
    1/2
    125
    3
    0.12
    PULL-OUT AND RESISTANCE TO SLIP LOADS
    12 Gauge Strut
    14 Gauge Strut
    16 Gauge Strut
    Thread Size
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    Max. Allowable Pull-Out Strength (lbs.)
    Resistance to Slip (lbs.)
    1/4″ – 20
    600
    300
    600
    300
    600
    300
    5/16″ – 18
    800
    500
    800
    400
    800
    400
    3/8″ – 16
    1000
    800
    1000
    750
    1000
    750
    1/2″ – 13
    2000
    1500
    1400
    1000
    1000
    1000
    1/2″x1/2″ – 13
    2300
    1500
    1400
    1000
    1000
    1000
    5/8″ – 11
    2500
    1500
    1400
    1000
    1000
    1000
    3/4″ – 10
    2500
    1700
    1400
    1000
    1000
    1000
    7/8″ – 9
    2500
    1700
    1400
    1000
    1000
    1000