
The 1591UFLBK is a black, flame retardant 1591 Series enclosure in the square 120 x 120 x 59 mm (4.72 x 4.72 x 2.32 in) size, with wall mounting flanges molded into the lid. It is intended for designers and installers who want to fix a PCB housing directly to a wall or panel.
Molded from flame retardant ABS rated UL94 V-0, the box has card guides in every side wall for 1.5 mm (0.062") boards mounted vertically. Lap joint construction protects against dust and splashing water and the enclosure is designed to meet IP54.
Per the drawing, overall length across the flanged lid is 145.80 mm [5.740 in] with 134.00 mm [5.276 in] flange hole centres, overall width 120.30 mm and height 58.80 mm. Inside dimensions are 113.54 x 113.54 x 54.90 mm. The lid screws are M3 x 10 mm Phillips machine screws into pre-installed brass inserts (black on black enclosures), torqued to 35.5–42.5 ozf.in (25–30 cN.m). The lid also accepts #4 self-tapping screws, with 1593ATS50/1593ATS100 PC board screws listed.
The 1591UFLBK includes box, lid, 4 cover screws and pre-installed brass inserts, weighs 0.37 lbs (0.17 kg) shipped in shrink wrap, and is RoHS and REACH compliant.
| Type | general purpose, flanged |
| Colour | Black |
| Series | 1591 Series – ABS Plastic Multipurpose Enclosures w/ Card Guides |
| Part Number | 1591UFLBK |
| Mounting Style | Flanged lid (wall mounting flanges molded into the lid) |
| Enclosure Grade | Flame retardant ABS (standard version) |
| Long Description | enclosure - plastic |
| Short Description | 1591U FLANGED LID BLACK |
| Inside Width | 113.54 mm [4.470 in] |
| Inside Height | 54.90 mm [2.161 in] |
| Inside Length | 113.54 mm [4.470 in] |
| Size (L X W X H) | 4.72 in x 4.72 in x 2.32 in (120 mm x 120 mm x 59 mm) |
| Overall Width (Drawing) | 120.30 mm [4.736 in] |
| Overall Height (Drawing) | 58.80 mm [2.315 in] |
| Overall Length (Drawing) | 120.00 mm [4.724 in] |
| Flange Hole Centres (Length) | 134.00 mm [5.276 in] |
| Overall Length Including Flanges | 145.80 mm [5.740 in] |
| Nominal Size (L X W X Depth, Ordering Table) | 4.72 in (120 mm) x 4.72 in (120 mm) x 2.32 in (59 mm) |
| Nylon Belt / Pocket Clip | 1599CLIP (black) or 1599CLIPGY (grey) |
| Replacement Cover Screws | 1591MS100 (nickel plated/silver) or 1591MS100BK (black), M3-0.5 x 10 mm, pack of 100 |
| Clear Lid Accessory (Series Ordering Table) | 1591UC |
| UPC | 623980197050 |
| UNSPSC | 39121301 |
| Card Guides | Molded into all side walls; accept 1.5 mm (0.062") thick boards; ideally suited for vertical PCB mounting |
| Guide Depth | 1.00 mm [0.039 in] |
| Guide Width | 3.00 mm [0.118 in] |
| Guide Height | 49.90 mm [1.965 in] |
| Guide Slot Width | 2.06 mm [0.081 in] |
| Horizontal PCB Mounting | Optional PC board card adaptors 1591Z6 (6 pack), 1591Z50 (50 pack), 1591Z100 (100 pack), molded from flame retardant ABS; recommended PCB thickness 1.5–1.75 mm |
| Solid Models | Available in .stp or .x_t |
| Drawing Reference | 1591UFL (REV: 06.16.2023) |
| Packaging Type | shrink wrap |
| Shipping Weight | 0.37 lbs (0.17 kg) |
| Included | Box, lid, 4 cover screws and pre-installed brass inserts |
| Material | ABS Plastic (flame retardant ABS, FRABS) |
| Screw Finish | Black screws (black enclosures) |
| Lid Fastening | M3 x 10 mm Phillips machine screws (M3-0.5) threaded into pre-installed integral brass inserts |
| Machinability | Factory modification available (milling, drilling, printing) |
| Lid PCB Mounting | Lid accepts #4 self-tapping screws; P.C. board screws for lid: #4 x 1/4" (6.4 mm) self-tapping, 1593ATS50 (50 pack) / 1593ATS100 (100 pack) |
| Joint Construction | Lap joint – protects against access of dust and splashing water |
| Recommended Cover Screw Torque | 35.5–42.5 ozf.in (25–30 cN.m) |
| IP Rating | IP54 (designed to meet IP54) |
| Chemical Resistance | Avoid acetone, ketones, ethers, aromatic and chlorinated hydrocarbons, thread locking compounds, cutting/tapping fluid, strong solvents; use only plastic-safe cleaners |
| Flame Rating | UL94 V-0 |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Wall mounting flanges are molded into the lid; the drawing shows 145.80 mm overall length and 134.00 mm between flange holes.
UL94 V-0 flame retardant ABS.
The lid accepts #4 self-tapping screws; #4 x 1/4" (6.4 mm) PC board screws for the lid are listed as 1593ATS50 and 1593ATS100.
Box, lid, 4 cover screws and pre-installed brass inserts.
Yes, 1591UFLGY is the light gray flame retardant flanged-lid version.

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