The Winchester grey, SCFP21220CTSEGGR, 2-1/2 in. x .120, BeckDeck Scrail is designed for use in the Fasco F58AC RHN20-90B SCR and most other 20-22-degree plastic strip framing nailers. Fasco's plastic strip Scrail fasteners meet the requirements of ASTM F1667, and are ICC-ES approved, according to the ESR-1539 evaluation report. Designed with a double thread, they prevent the protrusions that can occur when driving fasteners into composite materials.These plastic-collated Scrails combine the versatility of a conventional nail with the holding power of a screw. Additional features on the SCFP21220CTSEGGR fasteners include a square head and a Winchester grey painted finish. They're suitable for decking, flooring, subflooring and other heavy-duty applications.