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#12 x 3/4 Self Drilling Screws Rubber Washer (Quantity: 100 pcs) Unslotted Indented Hex Washer Head, Zinc Plated w/Bonded NEO-EPDM Washer Attaches Metal to Metal, #12-14 x 3/4, #3 Drill Point
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*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
- Electrical items MAY be 110 volts.
- 7 Day Return Policy
- All products are genuine and original
- Cash On Delivery/Cash Upon Pickup Available
#12 x 3/4 Self Drilling Screws Rubber Washer Features
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Washer Outside Diameter (OD): 9/16 Inch O.D.
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Diameter-Thread Pitch: #12-14 x Length: 3/4" - Head Diameter: 5/16 - Head Height: 0.139 - 0.155"
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Manufactured to SAE J78 for dimensional specifications
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Meets ASTM A 510 for carbon steel manufacturing
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Meets ASTM C 1513 for cold-formed steel framing connections
About #12 X 3/4 Self Drilling Screws Rubber Washer
A Zinc Coated Steel hex washer head tapping screw with spaced threads and a drill point which drills its own hole. Beneath the head is a conically shaped circular steel washer, bonded to a similarly shaped rubber-like (neoprene) piece which has a slightly smaller outside and inside diamter. When these washers are assembled (rubber side down) to self-drilling screws, those fasteners become "sealing screws". When properly assembled, this washer: (a) offers protection against leakage; (b) provides load bearing qualities superior to that of a regular flat washer; (c) reduces the chance of the fastening becoming loose due to vibration; (d) minimizes damage to the mating surface caused by contact with a steel washer. Sealing screws may be used to attach roofing or metal walls to steel frames. Consult a self-drilling screw selection chart for the correct size. Self-drilling screws offer economical benefits: reduces labor and tooling costs; reduces or eliminates drill bits and taps. Type BSD Thread Pitch: May be used to attach plywood, soft woods or composition board to metal, or attach metal to metal. Tek screws, also known as self-drilling screws or self-tapping fasteners, are fairly common pieces of hardware. Aside from the drill tip of the screw, Tek screws look like standard screws. The tip of a Tek screw, known as the drill tip, includes a small carving piece at the end of the screw. This piece is used to establish a small hole in applications by first tapping the screw against the application before driving it in. This provides a better starting point for drilling the screw. It also saves time by eliminating the need to drill a hole before installing a screw or waiting for thread to catch. Tek screws are commonly used in the electrical industry. Typically, these screws are used in metal-to-metal and metal-to-wood applications. The most common are used in thin metal applications such as working with steel studs.
