80/20® M8 x 16.00mm Button Head Socket Cap Screw with Washer with Slide-In Economy T-Nut, Zinc

3618 is comprised of: 5/16-18 x .625" Button Head Socket Cap Screw (BHSCS) 5/16-18 Roll-In T-Nut with Flex Handle .345" ID Washer

3878 is comprised of: M8 x 16.00mm Socket Head Cap Screw (SHCS) M8 Roll-In T-Nut with Flex Handle .335" ID Washer

3872 is comprised of: M8 x 20.00mm Button Head Socket Cap Screw (BHSCS) M8 Roll-In T-Nut with Flex Handle .335" ID Washer

3442 is comprised of: 5/16-18 x .750" Button Head Socket Cap Screw (BHSCS) 5/16-18 Hex Nut 0.349" ID Washer

3437 is comprised of: 5/16-18 x .625" Button Head Socket Cap Screw (BHSCS) 5/16-18 Roll-In T-Nut with Flex Handle 0.349" ID Washer