This Is Great Planes' 4-40x1" Lock Nut Bolt Set (4 Sets).

FEATURES: Metal construction with zinc plating to prevent rust from oxidizing
            on parts.
          Lock nuts have a White nylon insert
          High round cap head screws with hexagon socket drive insert
          Plain black steel hex wrench
          Comes in a Parts-Pak clear plastic box with resealable lid
          One year quality guarantee

INCLUDES: (4) Lock Nuts
          (4) Socket Head Screws
          (4) Flat Washers
          (1) Hex Wrench

SPECS:    Thread Size:  4-40
          Screw Length: 1"
                                                                   KPM 11/23/93
                                                                          ir/jl
                                                                      kr3/19/03