Comparison : Item # F5-M4-P2, F5 - Flush Captive Screws
Item # F5-M4-P6, F5 - Flush Captive Screws
Item # F5-90-402-20, F5 - Flush Captive Screws
Item # F5-M40-16, F5 - Flush Captive Screws
Item # F5-832-P2, F5 - Flush Captive Screws