1/2-13X1 1/2 Six Lobe Flat Floor Board Screw Type F Black Phosphate. Thread-Cutting Type-F threaded screws are used in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic. In stainless steel, material into which the screw is to cut threads should have a lower hardness by 10-20 Rockwell hardness. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable. Typically 100 degree flat or for fastening softer materials, 82 degrees flat.

Contains 20 most-wanted sizes of machine and wood/metal Snake Eyes Spanner security screws. A total of 1000 screws in stainless steel. Sizes 6, 8 and 10 in lengths from 1/2" to 1". Flat heads and pan heads. Includes 3 special matching drivers. All in a sturdy steel storage box. Ideal for schools, prisons, museums, hospitals and other institutions.

Contains 20 popular sizes of machine and wood/metal Torx security screws. A total of 1000 screws in stainless steel. Sizes 6, 8 and 10 in lengths from 1/2" to 1". Flat heads and button heads. Includes four matching driver bits and magnetic hand driver. All in a sturdy steel storage box.

1800 Piece Metric Hex Head Cap Screw Assortment - M6 to M16 - Class 8.8 - Zinc Contents: M6 x 1.0 Hex Nut - Class 8 - Zinc Plated - DIN 934 (100) M8 x 1.25 Hex Nut - Class 8 - Zinc Plated - DIN 934 (100) M10 x 1.5 Hex Nut - Class 8 - Zinc Plated - DIN 934 (100) M12 x 1.75 Hex Nut - Class 8 - Zinc Plated - DIN 934 (50) M16 x 2.0 Hex Nut - Class 8 - Zinc Plated - DIN 934 (25) M6 Flat Washer - Zinc Plated - DIN 125A (100) M8 Flat Washer - Zinc Plated - DIN 125A (100) M10 Flat Washer - Zinc Plated - DIN 125A (100) M12 Flat Washer - Zinc Plated - DIN 125A (50) M16 Flat Washer - Zinc Plated - ...

5/16-18X6 Six Lobe Flat Floor Board Screw Type F Black Phosphate. Thread-Cutting Type-F threaded screws are used in heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic. In stainless steel, material into which the screw is to cut threads should have a lower hardness by 10-20 Rockwell hardness. Flat head screws are used when protrusion of the fastener above the mating surface is unacceptable. Typically 100 degree flat or for fastening softer materials, 82 degrees flat.