P5000KO - 1-5/8" x 3-1/4", 12 Gage; Knock Outs

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Unistrut's P5000KO (knock-out) is design for use in electrical raceway and support applications.  It is UL listed and CSA listed for use as a strut-type channel raceway. The knock-outs are supplied attached to the strut and can be punched out in the field, as needed, for entry and exit of the wiring from the channel raceway.

This product is commonly used for lighting and other electrical applications. The channel can be used as both the raceway and support for the lighting, minimizing the material needs on the project and providing a clean, aesthetically pleasing installation.

Product dimensions are 1 5/8" wide x 3 1/4" tall x 12 ga. thick; with knock-outs.  The knock-outs are 7/8" in diameter and 6" on center.

Our P5000KO is available in the following finishes: Pre-Galvanized (PG), Hot-Dip Galvanized (HG), Plain (PL) and Green (GR).

Part No. Length (ft) Finish Product Weight / Ft (lbs/ft)
P5000KO 10 PG 3.05
P5000KO 20 PG 3.05
P5000KO 10 HG 3.233
P5000KO 20 HG 3.233
P5000KO 10 GR 3.05
P5000KO 20 GR 3.05
P5000KO 20 PL 3.05
P5000KO 10 PL 3.05

    Beam Loading

    Beam Loading - P5000KO
    Span
    (in)     		Max Allow. Uniform Load
    (lbs)     		Deflection at Uniform Load
    (in)     		Uniform Loading at Deflection Lateral Bracing Reduction Factor
    Span/180
    (lbs)     		Span/240
    (lbs)     		Span/360
    (lbs)
    24 4,997 0.03 4,997 4,997 4,997 0.98
    36 3,325 0.07 3,325 3,325 3,325 0.85
    48 2,499 0.12 2,499 2,499 2,499 0.70
    60 1,995 0.18 1,995 1,995 1,824 0.55
    72 1,663 0.26 1,663 1,663 1,264 0.44
    84 1,425 0.36 1,425 1,397 931 0.38
    96 1,245 0.47 1,245 1,064 713 0.33
    108 1,112 0.59 1,112 846 561 0.30
    120 998 0.73 912 684 456 0.28
    144 836 1.06 637 475 314 0.24
    168 713 1.43 466 352 228 0.22
    192 627 1.88 352 266 181 0.21
    216 551 2.35 285 209 143 0.19
    240 504 2.95 228 171 114 0.18
    Note Bearing load may govern capacity.
    Refer to the General Specifications for loading information.

    Column Loading

    Column Loading - P5000KO
    Unbraced
    Height
    (in)     		Allowable
    Load at Slot Face
    (lbs)     		Max Column Load Applied at C.G.
    K=0.65 (lbs) K=0.80 (lbs) K=1.0 (lbs) K=1.2 (lbs)
    24 5,650 16,870 15,180 12,850 10,600
    36 4,690 13,140 10,600 7,650 5,660
    48 3,560 9,550 6,860 4,790 3,660
    60 2,730 6,680 4,790 3,450 2,710
    72 2,160 4,980 3,660 2,710 2,170
    84 1,760 3,950 2,960 2,240 1,820
    96 1,500 3,270 2,500 1,930 1,580
    108 1,310 2,800 2,170 1,690 1,390
    120 1,170 2,450 1,930 1,510 KL/r>200
    144 980 1,980 1,580 KL/r>200 KL/r>200
    168 850 1,670 1,340 KL/r>200 KL/r>200
    Refer to the General Specifications for loading information.

    Elements of Section

    Elements of Section - P5000KO
    Area of Section 0.897 in2 (5.8 cm2)
    Axis 1-1 Axix 2-2
    Moment of Inertia (I) 1.098 in4 (45.7 cm4) 0.433 in4 (18 cm4)
    Section Modulus (S) 0.627 in3 (10.3 cm3) 0.533 in3 (8.7 cm3)
    Radius of Gyration (r) 1.107 in (2.8 cm) 0.695 in (1.8 cm)

    General Specifications

    Standard Lengths:

    • 10 feet:  10' or 10’ 1/8” (3.05m) ± 1/8" (3 mm)
    • 20 feet:  20' or 20’ 3/8” (6.11m) ± 1/8" (3 mm)

    Special Lengths:

    Curved Channel:

    • Many Unistrut channel sections can be supplied with a curve. Click here for our ordering form, specifications, and instructions.

    Load Data:

    • All beam and column load data pertains to carbon steel and stainless steel channels.
    • Load tables apply only to UNISTRUT brand channel. Look for "UNISTRUT" on the product.
    • Load tables and charts are constructed to be in accordance with the SPECIFICATION FOR THE DESIGN OF COLD-FORMED STEEL STRUCTURAL MEMBERS 2007 EDITION published by the AMERICAN IRON AND STEEL INSTITUTE USING ASD METHOD.
    • Loads are based on 33 ksi steel cold formed to 42 ksi.
    • Safety Factor to Yield Strength is 1.67 for Beam Loads and 1.80 for Column Loads.
    • Beam loads are based on a simple beam and are given as a total uniform load (W) in pounds. For proper calculation procedures, refer to our Beam Load Calculation Guide.
    • For bearing loads, reference our Bearing Loads Page.

    Materials & Finishes

    Materials & Finishes - Standard:

    • Pregalvanized (PG):  Conforms to ASTM A653 SS GR 33, G90.
    • Unistrut Defender (DF):  Conforms to ASTM A1046 SS GR 33
    • Hot Dip Galvanized (HG):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM A123
    • Perma-Green (GR):  Steel conforms to ASTM A1011 SS GR 33, E-Coat finish
    • Perma-Gold (ZD):  Steel conforms to ASTM A1011 SS GR 33, Finish conforms to ASTM B633, Type II SC3
    • Plain (PL):  Conforms to ASTM A1011 SS GR 33
    Materials & Finishes - Special Metals:
    • Stainless Steel, Type 304 (SS):  ASTM A240, Type 304 *
    • Stainless Steel, Type 316 (ST):  ASTM A240, Type 316 *
    • Aluminum (EA):  ASTM B221, Type 6063-T6 (Extruded) *

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