This is the 4-40 x 1-1/4″ mounting bolt sets with blind nuts from Du-Bro.Features: High strength steel construction for mounting engines Round head screws/bolts with a slotted drive insert Plain Silver 4-40 blind nuts Plain Silver flat washers Plain Silver slotted lock washersIncludes: Four each of bolts, flat washers, lock washers and blind nutsSpecs: Thread Size: 4-40 Screw/Bolt Length: 1-1/4″ Inner Diameter (Flat Washers): 0.12” Inner Diameter (Lock Washers): 0.12” SKU: DBR127 Categories: Airplane Workbench Supplies, Building Materials, Parts Finder
