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National, Challenge & Early Seybold Knife Bolt - B48

$11.87

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  • Our Part Number: B48

For Challenge 370 E and G series models, and 420, National, and early Seybold Paper Cutters. This 1/2-12 thread steel hex head cap screw fits the Challenge 370 E and G models, Challenge 420, most National, and early Seybold Paper Cutters.  (Equivalent to the original Challenge "1/2 x 1" V-Thread knife bolt, part number S-645, with the equivalent washer, originally part number S-353.)

The 1/2"-12 thread is 1-3/32" long below the washer. The washer is captive, it spins in place but it will not fall off.