Comparison : Item # 4C25SXPZ/LET, #4-40 X 1/4 SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER ZINC
Item # 4C37SXPZ/LET, #4-40 X 3/8 SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER ZINC
Item # 4C50SXPZ/LET, #4-40 X 1/2 SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER ZINC
Item # 4C31SXPZ/LET, #4-40 X 5/16 SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER ZINC
Item # 4C62SXPZ/LET, #4-40 X 5/8 SEM PHILLIPS PAN HEAD W/ EXTERNAL TOOTH LOCK WASHER ZINC