Size: 1-1/4, Len: 3.

Fastenal Part Number: 08217136172

NSN	5130-01-400-0186
Common Name	Size: 1-1/4, Len: 3.
Description	Size: 1-1/4, Len: 3.500, Drive End Dia: 1.813, Socket End Dia: 1.875, Drive Depth: .906