I'm looking for a weatherproof single-pole terminal block with a minimum of 6 cable screws - anyone know where I can find one?

Like this (Ref. 538) but in an enclosure for use as fused low current 12v distribution.

http://www.vehicle-wiring-products.eu/VWP-onlinestore/connectors/ connectors.php

Try these they also do higher ip rating but there larger

http://www.maplin.co.uk/Search.aspx?menuno=12335&FromMenu=y&doy=27m8&MenuName=Plastic%20Enclosures

HTH

YQUSTA

Try VWP item CL1352. I have LFB06 for my injection loom but they are 6.3mm spade connectors.