Comparison : Item # WN004400D, WN004400D - 4-40 Round Weld Nut with Chisel Point Projections
Item # WN004400C, WN004400C - 4-40 Round Weld Nut with Chisel Point Projections
Item # WN006320D, WN006320D - 6-32 Round Weld Nut with Chisel Point Projections
Item # WN006321D, WN006321D - 6-32 Round Weld Nut with Chisel Point Projections
Item # WN006320C, WN006320C - 6-32 Round Weld Nut with Chisel Point Projections