These flat head machine screws in 18-8 stainless steel are used where both countersinking and corrosion resistance are required

10 x 5 Phillips Bugle Coarse Drywall Screws Phosphate Coated - Carton (500)

1-14 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated

1 1/4-7 x 4 Flat Socket Cap Screw Alloy

8 x 1 5/8 Simpson Flat-Head Deck-Drive™ DWP Wood Screws - 6-Lobe Drive 316 SS - Bulk Carton (4000)

3/4-10 x 2 1/4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) 1/4-20 Socket Cap Screws Alloy These flat head machine screws3 4 10 x 2 1 4 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) . L9 High Tensile Strength Hex Cap Screws are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods. Brighton Best manufactures L9 bolting from AISI alloy steels. L9