#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
Brand: Newport Fasteners
Categories: Industrial & Scientific, Fasteners, Screws, Self-Tapping Screws

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.

Washer Outside Diameter (OD): 9/16 Inch O.D.
Diameter-Thread Pitch: #12-14 x Length: 3/4" - Head Diameter: 5/16 - Head Height: 0.139 - 0.155"
Manufactured to SAE J78 for dimensional specifications
Meets ASTM A 510 for carbon steel manufacturing
Meets ASTM C 1513 for cold-formed steel framing connections

Head Style: ‎Flanged
Material: ‎Metal
Thread Size: ‎#12-14
Exterior Finish: ‎Zinc,Metal,Rubber,Steel
Drive System: ‎External Hex
Part Number: ‎232484-100
Accessory Connection Type: ‎SDS
Manufacturer: ‎Newport Fasteners
Head Type: ‎Hex
Date First Available: June 19, 2018
Point Style: ‎Self-Drilling
Certification: ‎As, Astm, Sae
Package Dimensions: ‎4.65 x 4.37 x 2.28 inches
Customer Reviews: 4.7 out of 5 stars 103 ratings 4.7 out of 5 stars
Size: ‎#12 x 3/4"
Thread Coverage: ‎Fully Threaded
Batteries Required?: ‎No
Item Weight: ‎1.09 pounds
Fastener Type: ‎Self-Drilling Screws
Usage: ‎Commercial/Residential
Fastener Size: ‎No. 12
Measurement System: ‎Imperial
ASIN: B07F21D1JT
Brand: ‎Newport Fasteners
Metal Type: ‎Alloy Steel, Carbon Steel, Zinc
Number Of Pieces: ‎100
Batteries Included?: ‎No