SPI 4-80 THREAD PITCH TRIANGLES, 1 PAIRSPI 4-80 THREAD PITCH TRIANGLES, 1 PAIR 10-449-7, MEASURES 60-DEGREE THREADS, 4 TO 80 PITCH, NEOPRENE RUBBER HOLDERS Thread Triangles quickly measure pitch diameter of all 60-degree threads from 4 to 80 TPI. After installing the triangles on anvil and spindle, mic the threaded part and refer to chart that is included to determine class of fit, either 2A or 3A. Thread Triangles nest well into the "V" of the thread instead of making just point contact. Then micrometer rests on two parallel surfaces for better feel. Set includes 2 thread triangles and neoprene rubber holders that will fit any micrometer spindle and a reference chart.
100% Satisfaction Guarantee: At Mansion Tools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Tools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.