These are the nylon screws installed on each side of the enlarger carriage used to minimize side to side play of the carriage as you raise and lower it. This is the white nylon screw as fitted to D-2, D-3, D-4, D-6, B-7, B-8 and early production D-5 and Super Chromega E Dichroic enlargers. Supplied with lock nut.
For the black nylon screws fitted to later production D-5 and Super Chromega E enlargers, please see part #9-035-7144-57.
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