The U.S. aircraft register, updated daily
Parts

Pin Ball

No failure report names the pin ball. 4 FAA approvals let 1 company make a replacement pin ball, Avibank Manufacturing INC holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a pin ball and sell it as an approved part for the models named. These are the companies holding such approvals for a pin ball:

For these models most: Boeing 737 (2), Airbus Helicopters EC-135 now H135 (2).

MakerPartReplacesFitsGrantedStatus
Avibank Manufacturing INCPin Ball Lok 51400C6R30MS51400C6R30MSEurocopter MBB-BK117 C-2 Series, EC135 Series2011-04-10current
Avibank Manufacturing INCPin Ball Lok 51400C6R25MS51400C6R25MSEurocopter MBB-BK117 C-2 Series, EC135 Series2011-04-10current
Avibank Manufacturing INCPin-Ball Lock BACP18AM4L07HCBoeing Company BACP18AM4L07HCBoeing 737-100, -200, 737-3001998-04-15current
Avibank Manufacturing INCPin-Ball Lock 56479C4LA07Boeing Company BACP18AM4L07HCBoeing 737-100, -200, 737-3001997-09-17current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.