1/4" BSP High Speed Steel Die Nut RS4405A/10 also known as a chassis

also known as a chassis punch or a knockout punch

originally also known as British Standard Pipe Fitting thread/BSPF which have a constant diameter

50 x 3/4 Zinc Plated

flat & large objects

Digital Bore Gauge for Small Holes

1/4" BSP High Speed Steel Die Nut RS4405A/10 also known as a chassisParallel (straight) thread, British Standard Pipe Parallel thread BSP; originally also known as British Standard Pipe Fitting thread BSPF which have a constant diameter. Die nuts are suitable for repairing damaged or crossed threads or clearing swarf from threads. When using a die nut it is not necessary to apply the same level of precise initial alignment required to form a new thread (i. e. with a die) as the nut will follow the existing threads.