Hammond 1590BBS enclosure dimensions

Wall thickness, casting taper and a free drill template

External, at the rim
119.5 × 94 × 38.1mm

4.70 × 3.70 × 1.50 in

Drilled face
117.8 × 92.3mm

the face you lay out

Usable flat area
105.3 × 79.8mm

inside the walls and bosses

Wall thickness
2.3mm

0.9 mm draft per side

Lay out a 1590BBS →

Free in your browser, and it prints a true-size drill template.

The Hammond 1590BBS is the deepest of the wide 1590BB family. The face is the familiar landscape rectangle; the walls give over 38 mm of depth, enough for two full channels of through-hole circuitry. Aion FX's dual-overdrive kits, for example, are designed around it.

1590BBS drawing

AABB SECTION A-ASECTION B-B 117.892.3R5.2R4 BOSS38.1119.5 AT RIM(R1.5) EDGE2.3 WALL0.9 DRAFT(38.1) NOTES1.MATERIAL: DIE-CAST ALUMINIUM ALLOY2.INTERNAL CAVITY 113.3 x 87.8 AT THEDRILLED FACE3.USABLE FLAT AREA 105.3 x 79.8 INSIDETHE CORNER BOSSES4.LID FIXING: 4 OFF 6-32 UNC5.HIDDEN LINES ARE THE INSIDE FACE OFTHE WALL AND THE CORNER BOSS KEEPOUT6.CASTING DRAFT DRAWN AT TRUE SCALE7.TOP EDGE ROLLOVER R1.5 NOMINAL, NOTA MEASURED FIGURE HAMMOND 1590BBSDIMENSIONS IN MMSCALE: TO FITSOURCE: HAMMOND CADSTOMPBOXLAYOUT.COMTHIRD ANGLE
The drilled face, with the inside of the wall and the corner screw bosses as dashed hidden lines, and two sections cut on the centrelines showing the wall, the casting draft and the rolled top edge. Drawn from the CAD, so it agrees with the figures below it. Drag the drawing sideways to see the rest of the sheet.

Full specification

External footprint (at the open rim) 119.5 × 94 mm (4.70 × 3.70 in)
Drilled (top) face 117.8 × 92.3 mm (4.64 × 3.63 in)
Depth 38.1 mm (1.50 in)
Wall thickness 2.3 mm
Wall taper (per side, face to rim) 0.9 mm
Corner radius 5.2 mm
Screw boss reach (each corner) 4 mm
Internal cavity (at the face) 113.3 × 87.8 mm (4.46 × 3.46 in)
Usable flat area (inside the bosses) 105.3 × 79.8 mm (4.15 × 3.14 in)
Material Die-cast aluminium alloy
Lid screws 4 × 6-32 UNC

Figures are derived from Hammond's own STEP models and datasheets, the same data the editor and the comparison tool use. Official drawing, 3D CAD and specification sheet: Hammond's 1590BBS part page.

How thick are the walls?

The 1590BBS's walls are 2.3 mm thick. Like every diecast enclosure it also carries a casting draft: each wall leans out by 0.9 mm from the drilled face to the open rim, so the enclosure measures 119.5 × 94 mm at the rim and 117.8 × 92.3 mm across the face you drill. Worth knowing when a part seats against the inside of a wall, and why a caliper reading depends on where you take it.

What fits inside?

The internal cavity measures 113.3 × 87.8 mm at the face, and the screw bosses in each corner reduce the usable flat area for a circuit board to about 105.3 × 79.8 mm. To check a specific board, put its dimensions into the enclosure comparison tool's fit checker, or place the whole layout in the editor, which knows each component's real footprint and warns when something clashes with a wall or a boss.

1590BBS drill template

The Stompbox Layout editor has the 1590BBS as a built-in preset. Place your holes on it, and it prints a true-size PDF drill template with the enclosure outline, every hole position and a ruler to verify your printer's scale. Free, no download, runs in the browser.

Printed at 100% scale it works as a drilling template: tape it to the enclosure, centre punch each mark, then drill. Our guide to hand drilling a pedal enclosure walks the whole job, bit sizes included.

Or start from a ready-made layout: browse the 1590BBS drill templates built for popular PCB vendors' boards.

A 3D printed drill jig sitting over a pedal enclosure.

3D printable drill jig

Nothing to tape down, nothing to slip, and it wraps the sides so the jacks line up. The editor makes one from your own layout, for the exact enclosure you picked, $29.

See the drill jig →

How the 1590BBS compares

Enclosure External at the rim Drilled face Depth Usable flat area
1590BBS (Hammond) 119.5 × 94 mm 117.8 × 92.3 mm 38.1 mm 105.3 × 79.8 mm
1590BB 119.5 × 94 mm 116.9 × 91.4 mm 30 mm 104.4 × 78.9 mm
1590BB2 119.5 × 94 mm 118.1 × 92.6 mm 33.8 mm 105.6 × 80.1 mm

1590BBS vs 1590BB

The 1590BB is 0.9 mm narrower, 0.9 mm shorter and 8.1 mm shallower than the 1590BBS. Pick the BBS when the build genuinely needs the depth; the standard 1590BB is easier to source and sits lower on the pedalboard.

1590BBS vs 1590BB2

The 1590BB2 is 0.3 mm wider, 0.3 mm taller and 4.3 mm shallower than the 1590BBS. The two deep variants of the same footprint, and their faces are within half a millimetre. The BBS is the deeper by 4.3 mm; if the BB2 already clears your tallest part there is nothing else to choose between them.

1590BBS FAQ

What are the dimensions of a 1590BBS enclosure?

A Hammond 1590BBS measures 119.5 × 94 mm × 38.1 mm externally at the open rim (4.70 × 3.70 in). The drilled face measures 117.8 × 92.3 mm, and the usable flat area inside the walls and corner screw bosses is about 105.3 × 79.8 mm.

How thick are the walls of a 1590BBS?

The 1590BBS's walls are 2.3 mm thick, with a casting draft of 0.9 mm per side from the drilled face to the open rim.

Is there a drill template for the 1590BBS?

Yes. The free Stompbox Layout editor includes the 1590BBS as a preset and prints a true-size PDF drill template of your layout, with a ruler to verify print scale.

Every enclosure size

1590LB

49.3 × 49.3 mm face, 27 mm deep

Dimensions →

1590A

37.1 × 91.2 mm face, 27 mm deep

Dimensions →

1590B

59.3 × 111.2 mm face, 27 mm deep

Dimensions →

1590BS

58.6 × 110.1 mm face, 38 mm deep

Dimensions →

125B

63.6 × 119.3 mm face, 35.8 mm deep

Dimensions →

1590BB

116.9 × 91.4 mm face, 30 mm deep

Dimensions →

1590BB2

118.1 × 92.6 mm face, 33.8 mm deep

Dimensions →

1590J

143.4 × 93.4 mm face, 45.1 mm deep

Dimensions →

1590XX

143.4 × 119.4 mm face, 35.2 mm deep

Dimensions →

1590P1

80.6 × 150.6 mm face, 46.4 mm deep

Dimensions →

1590DD

185.7 × 117.7 mm face, 33 mm deep

Dimensions →

Or see them drawn to scale, side by side.

Plan your 1590BBS layout

Place the drill holes on a 1590BBS in the editor, check everything clears the walls and the screw bosses, then print a true-size PDF drill template. Free, in your browser.

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