P1272S, P1985S & P1986S - Beam Clamp (1-5/8" Series)

P1272S-No-Dimensions.png
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Cut Sheet
Part No. A Finish Flange Thickness Product Weight / Piece (lbs)
P1272S 1/4" (6) EG Up to 3/4" (Up to 19) 0.39
P1272S 1/4" (6) HG Up to 3/4" (Up to 19) 0.413
P1272S 1/4" (6) GR Up to 3/4" (Up to 19) 0.39
P1985S 3/8" (10) EG Up to 3/4" (Up to 19) 0.62
P1985S 3/8" (10) HG Up to 3/4" (Up to 19) 0.657
P1985S 3/8" (10) GR Up to 3/4" (Up to 19) 0.62
P1986S 3/8" (10) EG 7/8 to 2 (22 - 51) 0.83
P1986S 3/8" (10) HG 7/8 to 2 (22 - 51) 0.88
P1986S 3/8" (10) GR 7/8 to 2 (22 - 51) 0.83

    Design Loads & Installation



    Notes:

    1. Design loads only apply to Unistrut brand products. Look for "UNISTRUT" on the part.
    2. Use in pairs only.
    3. Safety factor = 2.5 based on ultimate strength of connection.
    4. Set Screw Installation Torque:

    P1272S:  60 in-lbs (7 N-m)
    P1985S & P1986S:  125 in-lbs (14 N-m)

    Seismic Design Loads


    P1985S Allowable (Design) Loads
    (lbs)
    Pullout Slip Along Slip Thru
    1,000 900 500

    Notes:
    1. Design loads only apply to Unistrut brand products. Look for "UNISTRUT" on the part.
    2. Seismic design loads are for the P1985S part only and for the 2 clamp installation as shown above.
    3. Must use clamps in pairs as shown above.
    4. Design loads are based on static testing with a safety factor = 5 based on ultimate strength of connection.
    5. Set Screw Installation Torque: 125 in-lbs (14 N-m)

    General Specifications

    Standard Dimensions (Unless Shown Otherwise on Drawing):

    • Hole Diameter:  9/16"  (14mm)
    • Hole Spacing (From End):  13/16"  (21mm)
    • Hole Spacing (On-Center):  1 7/8"  (48mm)
    • Width:  1 5/8"  (41mm)
    • Thickness:
    • 1/4"  (6.4mm) with steel meeting or exceeding ASTM A1011 SS GR 33, or
    • 0.220" (5.6mm) with steel meeting or exceeding ASTM A1011 HSLAS GR 45

    Note:

    • When used for mechanical supports, load capacities of brackets and fittings should be in compliance with the American Standard Code for Pressure Piping.

    Materials & Finishes

    Materials & Finishes - Standard:

    • Base Metal: Steel conforms to ASTM A1011 SS GR 33, A1011 HSLAS GR 45, A36, A575, A576, or A635.
    • 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-Green (GR):  Conforms to commercial standards for powder coating
    • Perma-Gold (ZD):  Conforms to ASTM B633, Type II SC1
    • Plain (PL):  No finish 

    Materials & Finishes - Special Metals:

    • Stainless Steel, Type 304 (SS):  Conforms to ASTM A240 or A276, Type 304 *
    • Stainless Steel, Type 316 (ST):  Conforms to ASTM A240 or A276, Type 316 *
    • Aluminum (AL):  Conforms to ASTM B209, Type 1100F or 5052-H32 *

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

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