Overview Product Description Thread - BSF Material - Solid Brass Thread sizes listed - 1/4"- 28, 5/16"-24, and 3/8"-24 Product Videos Custom Field Product Reviews Write a Review Write a Review × 1/4" 5/16" 3/8" BSF BRASS HALF THIN LOCK JAM NUTS Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *