Brand: FATH Item: Roll-in nut Series: 40 Series For Use With: All 40mm and 80mm profile T-slotted rails Material: Zinc plated steel Color: Silver Quantity per Pack: 10 Manufacturer Part Number: 096024F Thread Size: M4-0.7 Slot Size: 8 FATH roll-in nut, silver, M4-0.7, zinc plated steel, slot size 8. Package of 10. For use with all 40mm and 80mm profile T-slotted rails. Manufacturer part number: 096024F.