Comparison : Item # LA004401C, LA004401C - 4-40 Floating / Self-Locking Nuts
Item # LA004401D, LA004401D - 4-40 Floating / Self-Locking Nuts
Item # LA004402C, LA004402C - 4-40 Floating / Self-Locking Nuts
Item # LA004402D, LA004402D - 4-40 Floating / Self-Locking Nuts
Item # LA006321C, LA006321C - 6-32 Floating / Self-Locking Nuts