P1425 thru P1431 - Conduit (EMT) Clamp (1-5/8" Series)

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    Design Loads

    P1425 Thru P1431
    Part Number Conduit Size Design Load
    (lbs)
    P1425 3/8" 400
    P1426 1/2" 400
    P1427 3/4" 400
    P1428 1" 600
    P1429 1-1/4" 600
    P1430 1-1/2" 800
    P1431 2" 800
    P1118 2-1/2" 800
    P1119 3" 800
    P1120 3-1/2" 1,000
    P1121 4" 1,000

    Notes:

    1. Design loads apply only to Unistrut brand products. Look for "UNISTRUT" on the part.
    2. Design loads are based on static testing in 12 ga. channel with a safety factor of 5.0.
    3. Reference the P1109 thru P1126 series clamps for 2-1/2" thru 4" EMT sizes.


    Seismic Design Loads

    Pipe Clamp Seismic Design Loads - Image 1-01


    Notes:

    1. Design loads apply only to Unistrut brand products. Look for "UNISTRUT" on the part.
    2. For use with non-seismic loads. Based on static testing in 12 ga. channel with a safety factor of 5.0.
    3. For use with seismic loads supporting Schdule EMT or IMC Conduit. Based on FM1950-10 dynamic testing in 12 ga. channel with a safety factor of 1.5. For conduit sizes larger than 2", see the P1109 thru P1126 series clamps.

    General Specifications

    Installation:

    • Torque:

    Note: When tightening 1/4" screws used with a two piece pipe clamp, a torque of 5 ft-lbs (60 in-lbs) should be used.

    Materials & Finishes

    Material:

    • The steel meets or exceeds the physical properties of ASTM A1011 GR 33, except with SS, ST & AL finishes.
    Finishes:
    • Electrogalvanized (EG):  Conforms to ASTM B633, Type III SC1
    • Unistrut Defender (DF):  Conforms to ASTM A1059
    • Hot Dip Galvanized (HG):  Conforms to ASTM A123 or A153
    • Perma-Gold (ZD):  Conforms to ASTM B633, Type II SC1
    • Copper Coated (CC):  TBD
    • Everdur (E EG): TBD
    • Stainless Steel, Type 304 (SS):  ASTM A240, Type 304 *
    • Stainless Steel, Type 316 (ST):  ASTM A240, Type 316 *
    • Aluminum (AL): TBD

    * These materials have different physical properties and performance characteristics. Please contact us for design support.

    Material & Finish Combinations:

    Material / Finish
    Part Number
    Suffix
    Pipe Clamp
    Material / Finish
    Fasteners (Screw & Nut)
    Material / Finish
    Example
    Electro-galvanized
    EG
    EG
    EG
    P1109 EG
    Hot-dipped galvanized
    HG
    HG
    SS
    P1109 HG
    Unistrut Defender
    DF
    DF
    DF
    P1109 DF
    Stainless Steel Type 304
    SS
    SS
    SS
    P1109 SS
    Stainless Steel Type 316
    ST
    ST
    SS
    P1109 ST
    Aluminum
    AL
    AL
    AL
    P1109 AL
    Copper Coated
    CC
    CC
    CC
    P1109 CC
    Everdur
    E EG
    EG
    E
    P1109E EG
     

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