Four questions to help determine the proper fastener: 1. What materials are being fastened? 2. What are the load requirements? 3. What are the service requirements? 4. What is the environment? Fasteners/Screws
Description : #12-14 x 1-1/4” DP2 Self-Drilling Screw. 5/16” Hex Washer Head. Undercut with EPDM Sealing Washer. Carbon Steel. Zinc Plated with 1,000hrs salt spray coating. Fastener/Screw Terminology Head Style Major Diameter Threads Per Inch Fastener Length Point Type #12 - 14 x 1-1/4” DP2 5/16” HWH Major Diameter Threads Per Inch Fastener Length Point Type Head Style
Fastener Thread Types TWO GENERAL TYPES OF THREADS
Hex Head Pan Flat Wafer Hex Washer Flat Cuntersunk Head and drive systems for a variety of conditions Pancake Fastener/Screw Head Styles
Point Type Drilling Thickness DP1 Thin (.018” - .090”) DP2 Thin Medium (.035” - .140”) DP3 Medium (.090” - .250”) DP4 Medium/Heavy (.145” - .375”) DP5 Heavy (.250” - .500”) A - DP1 Light Gauge (Thin Metal) B - DP5 Heavy Gauge The thicker the material to be fastened, the larger the point “Type”. Self Driller Point Types B A
Increased Corrosion Resistance Fastener/Screw Corrosion Long Life Coated Stainless Steel Zinc Plated
1/8” Pop Rivet Pop rivets are used to hold two pieces of sheet metal together, common at flashing laps, using a 2-Step method; Step #1 - 1/8” Hole is Drilled Through both Pieces. Step #2 - Insert Pop Rivet in Hole with Rivet Gun
Used with panel lengths less than 30’-0” or snap down panels .
Note: Base of floating clip should be centered when installed.
Thermal Expansion & Contraction Definition: The natural characteristic of a length of metal to expand or contract relevant to a change in the metals temperature. Heat and sun expands/Cooling and shade contracts.