WING TIP SCREW FEATURES

• Self drilling hardened points for fast insertion and self centred start.
• No2 square drive for a positive connection avoiding 'tear out'.
• Hex 5 drive for 14g Wing Tip metal drillers.
• Parallel thread providing a constant and even clamping load.
• Heavy duty high strength shanks designed for use with power drivers.
• Thread cutting profile with a coarse tapping thread for rapid installation.

 

DD Fasteners self drilling screw connect components in one work step: they drill, form the thread, and fasten. This reduces the installation time, saves tool changes and costs for drills. Self-drilling screws save you time and effort by drilling their own holes, creating reusable threads, and fastening material in a single operation.

 

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  Aluminium Bonded Washers are for metal roof applications that require high strength, UV, ozone and corrosion resistance in rust proof conditions. Also used in the insulated panel industry
• Applications: Suitable for crest fixing both corrugated, square rib & broad sheet roof profiles and Insulated panels
• To suit screw size: To suit 14g (6.3mm) self drilling metal and timber screws
• Are Metric & Imperial Washers Interchangeable?: In most cases they are which is why we have added metric sizing to the imperial range and imperial sizing to the metric range. If you are still unsure or if the washer dimensions are critical click on the washer you are interested in and view the technical specifications table before ordering
• Material / Coating: Made from high quality non-conductive EPDM rubber material with a aluminium backing that is ozone and UV resistant and high strength
• Measurements: Every effort has been made to ensure all measurements on our site are accurate and where possible to the relevant standard, however they should only be used as a guide. If you have an exact requirement or you see a problem with our specifications please contact us directly
• Dimensions: Our stock is sourced from various suppliers, differences can exist such as the inside dimension, outside diameter, thickness, visible stamped markings, appearance and actual finish

Benefits of Hex Cap Screws

With their hexagonal shape, hex cap screws allow for greater torque than that traditional screws with a circular head. You can't install or remove them using a standard screwdriver bit like a flat head or Philip's head. Instead, you'll have to use a ratchet and socket combination.

Benefits of Self Drilling Screws

A Self-drilling screw is, essentially a self-tapping screw with the added feature of a drill point end. Self-drilling screws eliminate the need for a pre-drilled pilot hole as they perform the drilling, tapping, and fastening in one action. Hardened steel fixings are generally used when fixing metal to metal or metal to timber.

Corrosion Resistant Fasteners

Corrosion-Proof Fasteners Stand Up to the World's Harshest Environments
Rigorously tested per the global standards as ASTM B117, ASTM B695, DIN50018, DIN50021 and AS3566.2 for salt spray, acidic atmosphere, humidity, and other extreme exposures, our fasteners thrive where lesser products quickly corrodeto protect critical equipment investments.

DD Fasteners Co., Ltd. has recently announced the launch of a new line of high-quality stitching screws, designed to cater to a wide range of industrial and commercial applications. These stitching screws are available in various coatings and finishes, including black phosphate and zinc plated, making them ideal for use in drywall, metal studs, steel framing, wood, plasterboard, and sheetrock. The company's stitching screws are known for their durability, precision, and rust resistance, and are suitable for heavy-duty and fine thread applications. DD Fasteners Co., Ltd. is a leading supplier and manufacturer of stitching screws, offering custom solutions for various industries. With a focus on high-quality and affordable products, the company aims to meet the diverse needs of its customers

Applications:

Used to fix a wide variety of DDF Boards to metal studs. Please note the below when using Siniat Self Drilling Screws:

Screws to be located a minimum of 10mm from bound edges and 13mm from cut edges * Screw location to be a minimum of 3mm from the edge of the metal stud * Screw depth into the metal stud must be a minimum of 10mm

Benefits:

• For use with thick gauge metal studwork (over 0.7mm thick) * Fine threaded screw * Phillips head * Carbon steel screws with Zinc Coating * Manufactured to BS EN 14566

 

Used for stitching two metal roofing sheets together without the need to pre-drill a hole (Max. 1.6mm). Self-drilling point and tapered shank, with a washered hexagon head.

Metal Construction Stitching Screws - For Sheet to Sheet - Hex - EPDM Washer - Self-Drilling - Exterior - Silver Organic

Serrated flat head framing screw
M6 Steel Frame Screws  Pancake Head Philips #3 drive self threading taptite thread PC Frame Screws

Head Type: Pancake,Serrated flat head 
Point Type: Needle
Material: Carbon Steel
Finish: Class 3 Ruspert coating for screws

The Serrated flat head Frame Screw is designed for connecting wall frame components together through pre-punched holes.
Suitable for use in the assembly of:
Steel Wall Frames
Steel Roof Trusses
Steel Floor Trusses

Frame screws are Use for all steel trusses and steel wall frames with pre-punched holes.The taptite triobular thread reduces friction in its thread forming action. Provides resistance to vibrational loosening and has a superior holding strength.

Underhead serrations – serration lock underhead will provide resistance to loosening

Ruspert coating provides excellent protection in steel framing and reduces torque resistance during installation.High performance corrosion coating specifically formulated for steel framing.

DD Fasteners Co., Ltd. has recently launched a new range of Decking Screws designed to withstand harsh exterior environments and corrosion. The screws are engineered to drive easily into decks, creating a smooth finish on the surface. The company has also introduced a popular countersunk head option, which minimizes splitting when driven through the deck and leaves the surface looking sleek and seamless. This new product line is expected to provide a solution for outdoor decking projects, offering durability and a professional finish. DD Fasteners Co., Ltd. continues to demonstrate its commitment to providing high-quality, innovative fastening solutions for the construction industry

DD fasteners Bi-metal self-drilling screws meld 304 stainless steel and alloy steel to leverage their differing strengths. The result? A self-drilling, bi-metal screw capable of tapping threads into the sturdiest of substrates while also achieving maximum rust protection.