100 Pack, 1/4" x 4", Zinc Plated Hex Bolts, Machine Bolts That Have Been Designed To Adhere Facing Materials To Prevent Shear Movement, Specifically In Wood To Wood, Wood To Metal, Or Metal To Metal Applications, Zinc Grade 2 Hex Bolts Are Recommended For Most General Uses & Are Corrosion Resistant For Typical Use, Be Sure To Pre-Drill Any Holes & To Use Washers & Nuts That Are A Similar Grade & Finish.