Overview Reviews Product Description N0.4 x 40 TPI x 1 inch long Socket Head Cap Screw-UNC, 18.8 Stainless Steel Product Videos Custom Field UOM EA Product Reviews Write a Review Write a Review × 4-40X1 SOCKET HD BOLT 18.8 UNC SS Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *