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panel-cutout gauge plate, 40 x 40 x 3 mm

panel-cutout gauge plate, 40 x 40 x 3 mm: centre hole Ø24.0 (the D-size cutout) and two Ø3.2 screw holes at (-9.5, +12.0) and (+9.5, -12.0) mm, i.e. on the diagonal of the 19 x 24 rectangle (NL2MP / NL4MP sheets print 19.0 and 24.0 and a Ø3.2 minimum screw hole; the diagonal placement follows the Neutrik D-series drawing summarised on panel-cutouts); plate size, thickness and corner radius are Xem choices

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

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From the full sheet

Neutrik D-size XLR and speakON panel cutouts: Ø24 mm hole, 19 x 24 mm screw holes, NL2MP / NL4MP / NL8MPR + cutout gauge: every size, notes, mating features and sources. What size hole does a Neutrik XLR chassis connector or speakON NL4MP need?