(50) Bulloni a flangia esagonali 1/4-20x1/2 grado 8 e (50) dadi di bloccaggio flangia 1/4-20 Gr.G
1/4-20 Hex Flange Grade G Lock Nut - Phosphate Finish. 1/4-20x1/2 Hex Flange Bolt Grade 8 - Phosphate - Full Thread. These are not second quality fasteners that were previously rejected or rescued from a scrap yard.