Engine/Cutting tool/630861-630878 REAMER TAPER PIN AMERICAN, STANDARD STRAIGHT FLUTE

中文品名：美标直槽锥销铰刀

1/48 Taper pins according to U.S. Standard have a taper of 6.35 mm per 25.4 mm.  These reamers are designed in nominal numbers but since the standards are not unified, there are minor differences in tip diameter and small end diameter.

根据美国标准，1/48锥度销的锥度为6.35 mm/25.4 mm。这些铰刀是按标称数量设计的，但由于标准不统一，在刀尖直径和小端直径上有很小的差异。