Round head large diameter lockbolts

PLB16 12.7mm (1/2″) series
PLB28 22.2mm (7/8″) series
PLB20 15.9mm (5/8″) series
PLB32 25.4mm (1″) series
PLB24 19.1mm (3/4″) series

Flat head large diameter lockbolts

PLK16 12.7mm (1/2″) series
PLK28 22.2mm (7/8″) series
PLK20 15.9mm (5/8″) series
PLK32 25.4mm (1″) series
PLK24 19.1mm (3/4″) series

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