P2073A & P2073A SQ - Post Base (1-5/8" Series)

Part No. Nom. Pipe Size Finish Product Weight / Piece (lbs)
P2073A STD EG 4.08
P2073A STD HG 4.325
P2073A STD GR 4.08
P2073A STD SS 4.08
P2073A STD ST 4.08
P2073A STD AL 1.63
P2073ASQ SQ EG 4.08
P2073ASQ SQ HG 4.325
P2073ASQ SQ GR 4.08
P2073ASQ SQ SS 4.08
P2073ASQ SQ ST 4.08
P2073ASQ SQ AL 1.63

    Design Loads (Bending Moment)

    Design Loads - P2073A (Bending Moment)
    Bending Direction Average Ultimate Load
    Average Ultimate Bending Moment
    Allowed Bending Moment
    Strong 7,640  45,840 15,200
    Weak 3,100 18,600 6,200

    1. Design Loads only apply to UNISTRUT brand products. Look for "UNISTRUT" on the part.
    2. Average Safety Factor = 3.0 based on static testing to the ultimate strength of connection. 
    3. 1/2" Unistrut Channel Nut and Cap Screw torqued to 50 ft-lbs required for installation.
    4. Design Loads apply only to the P2073A part number.

    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


    • 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 or SC3
    • 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.

    Related Resources


    Technical Documents