1/4-20 x 1 3/8 Jackson screw. Special machine screw with small diameter slotted oval head and 1/4-20 thread.
Commonly used in attaching floors on many cars of the early teen years such as Stevens Duryea and many others of that vintage.
Weight | 0.1000 lbs |
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Dimensions | 2 × .5 × .5 in |