8421-120: Assortment of Round Head Slotted Machine Screws and Nuts. 1125 Total pieces Manufacturer Mfg. P/N 8421-148 Warranty 30 DaYS Size Color Variety Assortment of Round Head Slotted Machine Screws and Nuts. Pre-packed assortment of the most popular products and sizes. Excellent for mobile repair vehicles and jobsite repair stations. Trays are constructed of cold-rolled steel for excellent durability. 50 of 6-32 x 1/4" Round Head Slotted 50 of 6-32 x 1/2" Round Head Slotted 50 of 6-32 x 3/4" Round Head Slotted 50 of 6-32 x 1" Round Head Slotted 50 of 8-32 x 1/2" Round Head Slotted 50 of 8-32 x 3/4" Round Head Slotted 50 of 8-32 x 1" Round Head Slotted 50 of 10-24 x 1/2" Round Head Slotted 50 of 10-24 x 3/4" Round Head Slotted 50 of 10-24 x 1" Round Head Slotted 25 of 10-24 x 1-1/4" Round Head Slotted 25 of 10-24 x 1-1/2" Round Head Slotted 25 of 12-24 x 1/2" Round Head Slotted 25 of 12-24 x 1" Round Head Slotted 100 of 6-32 Hex Machine Screw Nut 100 of 8-32 Hex Machine Screw Nut 50 of 10-24 Hex Machine Screw Nut 25 of 12-24 Hex Machine Screw Nut 50 of 10-32 x 1/2" Round Head Slotted - Fine Thread 50 of 10-32 x 3-4" Round Head Slotted - Fine Thread 50 of 10-32 x 1" Round Head Slotted - Fine Thread 25 of 10-32 x 1-1/4" Round Head Slotted - Fine Thread 25 of 10-32 x 1-1/2" Round Head Slotted - Fine Thread 50 of 10-32 Hex Machine Screw Nut - Fine Thread