Strut 90° angle fittings, 1-5/8 in: B101 and B104 corner angles — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/strut-angle-fittings/  (sheet CC BY 4.0)
Basis: Distributor listings of B-Line catalog numbers; the B-Line section prints leg and hole drawings that could not be read here, so numbers only, no file
Catalog version: 2026-10-20

Sizes: see table below
- The listings give one length, the width, a depth and the hole count, not each leg's length or which holes sit on which leg, so no file is drawn (it would mean inventing the layout). Hole 9/16 in; 1-7/8 in spacing and 13/16 in from an end are the general fitting numbers.
- Gusseted angles are not listed here: gusset dimensions were not available.

part  holes  length  width  depth  thickness  hole
B101  2  2-5/16 in (58.7 mm)  1-5/8 in (41.3 mm)  1-5/8 in (41.3 mm)  7/32 in (5.6 mm)  9/16 in (14.3 mm)
B104  4  4-1/8 in (104.8 mm)  3-1/2 in (88.9 mm)  3-1/2 in (88.9 mm)  7/32 in (5.6 mm)  9/16 in (14.3 mm)

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Eaton B-Line: B-Line series strut systems: Strut fittings catalog section (flat plate, 90° angle, U, Z fittings, post bases) — web — Publisher's page; dimensions are facts — https://www.eaton.com/content/dam/eaton/products/support-systems/strut-systems-&-accessories/strut-fittings-and-accessories/strut-fittings-catalog-section.pdf
- Gerrie Electric (distributor): B-Line B101ZN 90° corner angle: 2 holes, 2-5/16 x 1-5/8 x 1-5/8 in, 7/32 in — web — Publisher's page; dimensions are facts — https://www.gerrie.com/Product/B-Line-B101ZN
- Gerrie Electric (distributor): B-Line B104ZN 90° corner angle: 4 holes, 4-1/8 x 3-1/2 x 3-1/2 in, 7/32 in, 9/16 in holes — web — Publisher's page; dimensions are facts — https://www.gerrie.com/Product/B-Line-B104ZN
- McMaster-Carr: Strut channel fittings (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/products/strut-channel-fittings/

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=strut-angle-fittings