Brand: FATH Item: Double economy T-nut Series: 10 Series For Use With: All 1in and 2in profile T-slotted rails Material: Zinc plated steel Color: Black Quantity per Pack: 4 Manufacturer Part Number: 096E10U1/4-20S01 Thread Size: 1/4-20 UNC Slot Size: 6 FATH double economy T-nut, black, 1/4-20 UNC, zinc plated steel, slot size 6. Package of 4. For use with all 1in and 2in profile T-slotted rails. Manufacturer part number: 096E10U1/4-20S01.