The PMB5057WKIT2 is a stainless steel pole mount kit that lets a Hammond 1556B, 1556BA, 1557B or 1557BA enclosure be fastened securely to a pole. It is the large-clamp version of the 50–57 mm kit for these enclosure profiles, rated for poles from a minimum of 1.5 in (38 mm) up to 15 in (381 mm) in diameter, and the drawing notes it can also be mounted to square or rectangular shapes.
Per the part drawing, this purchased kit includes 1 bracket, 1 clamp and hardware, and all parts are made from stainless steel. The installation instructions confirm that the 1556B/BA and 1557B/BA profiles use one bracket, fixed through the enclosure's internal flush mount holes. The matching hardware is #8 x 1/2" screws, with SCPMB4-20 listed as the replacement pack (#8 x 1/2" SHCS and #10 flat washers, 20 of each).
Installation uses a #2 Phillips head for the #8 hardware, torqued to 150 cN.m (13.5 lbf.in); the drawing gives a recommended hardware torque of 11.5–13.5 lbf-in (130–150 cN-m). Thread the clamp through the bracket slot, wrap it around the pole, and while holding the enclosure against the pole tighten the clamp with a 5/16 in (8 mm) nut drive. Note that the manufacturer states the 1556 series is not designed for outdoor use.
The PMB5057WKIT2 is RoHS and REACH compliant. For poles up to 7 in, the small-clamp equivalent is PMB5057WKIT1.
| Type | Pole Mounting Kit |
| Description | 15" pole mount kit for 1556, 1557 |
| Kit Contents | 1 bracket, 1 clamp and hardware |
| Kit Designation | 50–57 mm Pole Mount Kit, Large Clamp |
| Short Description | 15" POLE MOUNT KIT |
| Size (L X W X H) | 11 in x 5.5 in x 1 in (279 mm x 140 mm x 25 mm) |
| Bracket Overall Length (Drawing) | 78.00 mm [3.07 in] |
| UPC | 623980986906 |
| UNSPSC | 39121301 |
| Mounting Holes Used | Internal flush mount holes (1556B/BA, 1557B/BA use one bracket) |
| Enclosure Screw Type | #8 x 1/2" |
| Compatible Enclosures | 1556B, 1556BA, 1557B, 1557BA |
| Replacement Screw Pack | SCPMB4-20 (#8 x 1/2" SHCS [20pkg], #10 flat washer [20pkg]) |
| Small-Clamp Equivalent | PMB5057WKIT1 |
| Clamp | Large clamp (HCLAMP2) |
| Hardware Tool | #2 Phillips head for #8 hardware |
| Assembly Torque | 150 cN.m (13.5 lbf.in) |
| Pole Diameter Range | 1.5 in to 15 in (3.8 cm to 38.1 cm) |
| Clamp Tightening Tool | 5/16 in (8 mm) nut drive |
| Other Mounting Shapes | Can also be mounted to square or rectangular shapes |
| Recommended Hardware Torque | 11.5–13.5 lbf-in (130–150 cN-m) |
| Packaging Type | Bag |
| Shipping Weight | 0.42 lbs (0.19 kg) |
| Material | Stainless Steel (all parts) |
| Note | The 1556 series is not designed for outdoor use |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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It is listed for the 1556B, 1556BA, 1557B and 1557BA enclosure profiles.
The large clamp (HCLAMP2) covers poles from 1.5 in to 15 in (3.8 cm to 38.1 cm) in diameter. The drawing also notes it can be mounted to square or rectangular shapes.
The drawing states the purchased kit includes 1 bracket, 1 clamp and hardware. The instructions note that 1556B/BA and 1557B/BA use one bracket, fitted to the internal flush mount holes.
A #2 Phillips head for the #8 hardware (torque to 150 cN.m / 13.5 lbf.in) and a 5/16 in (8 mm) nut drive to tighten the clamp.
The manufacturer notes that the 1556 series is not designed for outdoor use, so check your enclosure series before installing outside.
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