Comparison : Item # TNRC3-0-VAL-OS, Triangle Oversized Negative with Hole and Dbl. Countersink, i.c. 0.400 / 0.410 in
Item # TNRC4-0-VAL-OS, Triangle Oversized Negative with Hole and Dbl. Countersink, i.c. 0.525 / 0.535 in
Item # TNRC5-0UST-#10, Triangle Oversized Negative with Hole and Dbl. Countersink, i.c. 0.655 / 0.655 in
Item # XTNRC4-0UST-#5, Triangle Oversized Negative with Hole and Dbl. Countersink, i.c. 0.535 / 0.545 in
Item # XTNRC5-0UST-#5, Triangle Oversized Negative with Hole and Dbl. Countersink, i.c. 0.620 / 0.630 in