hardware screws
z2300 thumb screw knurled 4 40x1 4 l stl
thumb screw knurled thread size 4 40 length 1 4 in . steel finish black oxide head dia . 3 8 in . head height 3 32 in . shoulder dia . 1 4 in . shoulder length 3 32 in . class 2a rockwell hardness b68 to b71 tensile strength 57000 br b features b ul li class 2a li li finish black oxide li li head type knurled li li item thumb screw li li length 1 4 li li material steel li li rockwell hardness b68 to b71 li li shoulder dia . 1 4 li li head dia . 3 8 li li thread size 4 40 li li head height 3 32 li li tensile strength 57000 li li shoulder length 3 32 li ul