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Strut channel, 1-5/8 in (Unistrut / B-Line): profile, lips, slots and hole patterns

Name: Strut channel, 1-5/8 in (Unistrut / B-Line): profile, lips, slots and hole patterns dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What are the exact dimensions of 1-5/8 in strut channel (Unistrut P1000, B-Line B22): lips, slot, hole pattern? · Standard part · basis: Unistrut 1-5/8 Framing System catalog (channel pages); Eaton B-Line channel and fittings catalog sections

Also called: unistrut dimensions, unistrut p1000 dimensions, strut channel dimensions, unistrut lip dimensions, unistrut slot width, b-line b22, superstrut, unistrut stl, unistrut step, 1-5/8 strut, deep strut, shallow strut, p1001 back to back, unistrut hole spacing, unistrut slotted channel

Exact dimensions. True size, with no printing tolerance added.

width: 41.27 mm

Notes

Strut channel (Unistrut, B-Line and the many compatibles) is a 1-5/8 in wide cold-formed C section with the top edges turned in and down to form lips. A channel nut drops through the 7/8 in slot, turns 90° and its grooves bite the lips, so fittings, clamps and brackets bolt on anywhere along the length.
The profile numbers are the same on every height in both makers' drawings: 3/8 in flanges each side, a 7/8 in slot and 9/32 in lips. Heights and gauges are from the Unistrut selection table; B-Line prints the same flanges and lip on B11, B12, B22, B24, B32, B42 and B52.
Neither maker publishes the bend radii, so the files are drawn with sharp bends: the section is a little fuller than the real channel (P1000: 0.584 in² drawn vs .555 in² published). The lip depth is drawn from the top face down.
Files are 6 in pieces. The hole and slot spacing is published; the distance from the cut end to the first hole is not (it depends where the channel was cut), so each pattern is centred on the piece.
Knockouts are partly sheared discs, not holes, so no knockout file is drawn; their size and spacing are in the table. The 16 ga 13/16 in profile (P4000 / B26 family) prints different flange numbers and is left out of the files.
Fittings (flat plates, angles, brackets) share one hole pattern: 9/16 in holes, 1-7/8 in apart, 13/16 in from the end, on a 1-5/8 in wide plate. That matches the 1-7/8 in hole spacing in the channel back.

Strut channel, 1-5/8 in (Unistrut / B-Line): profile, lips, slots… size chart

parameter	value
width (all)	1-5/8 in (41.3 mm)
slot opening between the lips	7/8 in (22.2 mm)
top flange, outer face to slot edge (each side)	3/8 in (9.5 mm)
inturned lip depth (from the top face)	9/32 in (7.1 mm)
12 ga thickness	.105 in (2.7 mm)
14 ga thickness	.075 in (1.9 mm)
16 ga thickness	.060 in (1.5 mm)
height 1-5/8 in (41.3 mm)	Unistrut P1000 (12 ga), P1100 (14 ga), P2000 (16 ga); B-Line B22 (12 ga), B24 (14 ga)
height 1-3/8 in (34.9 mm)	Unistrut P3000 (12 ga); B-Line B32
height 1 in (25.4 mm)	Unistrut P4400 (12 ga); B-Line B42
height 7/8 in (22.2 mm)	Unistrut P3300 (12 ga)
height 13/16 in (20.6 mm)	Unistrut P4000 (16 ga), P4100 (14 ga), P4520 (12 ga); B-Line B52 (12 ga), B54 (14 ga)
height 2-7/16 in (61.9 mm)	Unistrut P5500 (12 ga); B-Line B12
height 3-1/4 in (82.6 mm)	Unistrut P5000 (12 ga); B-Line B11; or two 1-5/8 channels back to back (P1001)
slotted back	9/16 × 1-1/8 in (14.3 × 28.6 mm) slots on 2 in (50.8 mm) centres
holes in the back	9/16 in (14.3 mm) holes on 1-7/8 in (47.6 mm) centres
knockouts	7/8 in (22.2 mm) on 6 in (152.4 mm) centres
long slots (other patterns)	13/32 × 3 in (10.3 × 76.2 mm) on 4 in centres; 7/8 × 2-3/4 in on 3-1/2 in centres; 11/16 × 2 in on 3 in centres
fitting bolt holes	9/16 in (14.3 mm), 1-7/8 in (47.6 mm) on centre, 13/16 in (20.6 mm) from the end
fitting width / thickness	1-5/8 in (41.3 mm) / 7/32 in (5.5 mm) (B-Line)
P1000 section area (published)	.555 in² (3.58 cm²); this file's sharp-bend section: 0.584 in²

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Unistrut (Atkore)	1-5/8" Framing System catalog: Channels (P1000 to P5500 drawings, selection table, hole patterns)	web	Publisher's page; dimensions are facts
Eaton B-Line	B-Line series strut systems: Channel and combinations catalog section (B11 to B56 profiles, hole patterns)	web	Publisher's page; dimensions are facts
Eaton B-Line	B-Line series strut systems: Strut fittings catalog section (general fitting hole size, spacing, width, thickness)	web	Publisher's page; dimensions are facts
Unistrut Ohio (Unistrut service centre)	P5000HS channel: 9/16" holes 1-7/8" on center, back side	web	Publisher's page; dimensions are facts

Free files

★ Free files 10 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

strut-1-5-8x1-5-8-12ga-plain-6in	1-5/8 × 1.625 in (41.3 mm), 12 ga (2.67 mm), P1000/B22-size profile, 6 in long, plain back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x1-5-8-12ga-slotted-6in	1-5/8 × 1.625 in (41.3 mm), 12 ga (2.67 mm), P1000/B22-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x1-5-8-12ga-holes-6in	1-5/8 × 1.625 in (41.3 mm), 12 ga (2.67 mm), P1000/B22-size profile, 6 in long, 9/16 in holes on 1-7/8 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x1-5-8-14ga-slotted-6in	1-5/8 × 1.625 in (41.3 mm), 14 ga (1.90 mm), P1100/B24-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x1-3-8-12ga-slotted-6in	1-5/8 × 1.375 in (34.9 mm), 12 ga (2.67 mm), P3000/B32-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x7-8-12ga-slotted-6in	1-5/8 × 0.875 in (22.2 mm), 12 ga (2.67 mm), P3300/—-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x13-16-12ga-slotted-6in	1-5/8 × 0.8125 in (20.6 mm), 12 ga (2.67 mm), P4520/B52-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x2-7-16-12ga-slotted-6in	1-5/8 × 2.4375 in (61.9 mm), 12 ga (2.67 mm), P5500/B12-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x3-1-4-12ga-slotted-6in	1-5/8 × 3.25 in (82.5 mm), 12 ga (2.67 mm), P5000/B11-size profile, 6 in long, 9/16 × 1-1/8 in slots on 2 in centres in the back; pattern centred on the piece, sharp bends	STEP · STL
strut-1-5-8x3-1-4-back-to-back-12ga-6in	Two 1-5/8 × 1-5/8 in 12 ga channels back to back (P1001 style, 3-1/4 in overall), 6 in long; joining welds not drawn	STEP · STL

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Plain text: sheet.txt · JSON: /api/geometry?object=strut-channel-1-5-8