it becomes a safety locking device

7/8-9 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (60)

7/16-20 x 1 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

9 x 3 1/2 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS- 5 lbs Pack (310)

3/4-16 x 3 1/2 Hex Cap Screw SS 316 (A4)

10-12 x 1 Phillips/Square Pancake Head Tyoe A Sheet Metal Screw 305 Stainless Steel Passivated & Waxed - Carton (4000) 3/8-24 Grade 8 Hex Cap Screws Yellow Zinc Plated - Domestic USA it becomes a safety lockingThe 10 12 x 1 Phillips Square Pancake Head Type A Sheet Metal Screw is engineered with 305 stainless steel for superior strength and durability. Each screw is passivated and waxed to provide protection from corrosion and enhance its performance in high temperature environments. The carton contains 4000 screws.