We are offering brass file screws. material: brass file screws to cz 121 threads: bsw threads (inches)ba threadsiso metric (mm threads)unc & unf threads length / size: 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25, mm, 32mm, 1/8", 5/32", 3/16", 1/4", 5/16", 3/8", 1/2", 5/8", 3/4", 1", 11/8", 11/4", 11/2", 13/4", 2" finish and coating: natural brass file screws, nickel electro plated etc. any kind of brass file screws and brass screw can be developed and supplied exactly as per customer specification, design & requirement. file screws are also available in full brass, brass and m.s. And m.s. Only.