Nylon Black Plastic Thumb Screw, 10-32 x  3/8" Length, 13/32" Head Dia,  100 Pc

Thread Size:  10-32
Thread Length:  3/8"
Head Diameter:  13/32"
Head Height:  5/16"

Nylon 6/6 Black
Knurled Head
-40 to 185F

Length is measured from under the head.
2A Thread Fit

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