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Click on the links to get to the download page. Grab yourself some self drilling screws if you need to drill into sheet metal. Bay Engineers Supplies carries self drillers and tek screws in many different sizes. Did you know your browser is out of date? Internet Explorer Firefox Safari Chrome. We are open to supply essential services with urgent product requirements. Call us on Self Drillers. Engineering Consumables. Power Transmission. Specials - Login to see reduced pricing!

Our Brands. Fasteners : Self Drillers Grab yourself some self drilling screws if you need to drill into sheet metal. Sub-Category Fasteners sub-categories List Grid. Thank you. Someone will be in contact about your enquiry as soon as possible. Product Code. Product Name. Your Name. This field is intended to catch out spammers - please leave it blank. Go to checkout Continue shopping. Quantity Enquire.Learn more about Blade Pile New Zealand and our mission to provide innovative screw pile solutions through advanced pile technology.

screw sizes nz

View our range of screw pile solutions and piling related products to learn how Blade Pile New Zealand can benefit you. See news of our latest screw pile installations, pile technology developments and more.

Contact us. The Superior Solution With a superior dual blade design, the Blade Pile is an advanced screw piling system that can provide up to twice the holding force of traditional helical piles. Our industry leading screw pile solutions and pile technology offer an innovative foundation solution for the building and construction industry. With a solution for all types of problem sites and conditions, Blade Pile New Zealand offer product supply to installation that is both cost and time effective.

Why Blade Pile Blade Pile's screw pile solutions and pile technology offer three key benefits to our customers. Unbeatable Strength. Easier Installation. Competitive Price. Contact Us Call our office directly at or send through an email using our contact form below.GRK fasteners allow users to complete jobs with more productivity.

Our patented W-Cut Threadform feature reduces installation torque and allows fast driving and ease of install, the recessed Star Drive eliminates recess stripping for improved productivity, and the Zip-Tip feature eliminates the need for pre-drilling and allows one-step installation.

GRK's feature-rich screws drive jobsite productivity and allow users to keep moving from one job to the next. GRK offers a wide selection of fasteners that includes Multi-purpose, structural, trim, cabinet, composite and stainless screws.

screw sizes nz

GRK's products are designed for ease of use and faster drive times, increasing productivity for users. Low Profile Cabinet Screws provide you with a quick and secure installation for cabinetry and light duty attachments. Where to buy. Our Product Categories GRK offers a wide selection of fasteners that includes Multi-purpose, structural, trim, cabinet, composite and stainless screws. View product. Low Profile Cabinet Screw Low Profile Cabinet Screws provide you with a quick and secure installation for cabinetry and light duty attachments.Screws are undoubtedly the most versatile fasteners used in woodworking, but there are a lot of choices.

Wood screws are handy for quickly building jigs and clamping forms, joining cabinet and furniture parts, mounting hardware and trim, and much more. Screws form strong connections between parts made from solid wood, plywood and other sheet goods without the need for cut joinery. From heads to drives, points to threads, platings to coatings, our author gives you a thorough education in the options available in the world of modern screws.

screw sizes nz

Screws are also good for reinforcing parts assembled with traditional joinery — for example, pinning tenons in their mortises. Choosing the right wood screw used to be simple pick a zinc or brass screw with the right size and length for the job at hand. But technological developments in construction and wood products manufacturing have spawned an extensive range of new screws in recent decades.

Hopefully, this exploration will better empower you the next time you need to choose the right screws for the project at hand.

Among the many materials wood screws are made from — brass, bronze, aluminum, etc. But old-fashioned tapered steel wood screws can be a pain to use.

Many woodworkers switched to inexpensive drywall screws when they became readily available a few decades ago.

Choosing Woodworking Screws

Made from harder steel that can penetrate wallboard and studs, drywall screws drive in quickly and without the need for predrilled pilot holes. Fortunately, a different kind of screw has largely replaced traditional tapered and drywall screws. Their heads and shanks are durable enough to withstand high torque delivered during driving with a power drill or impact driver, and can withstand the punishing stresses that screw joined furniture or cabinet parts may be subjected to.

For even greater resistance to rust and corrosion, the two best screw materials are silicon bronze and stainless steel. Head designs can be divided into two groups: those that sink flush with the work surface and those that stand proud of it.

In the first group, trim head screws and bugle head screws have heads designed to automatically sink flush in all but the hardest materials e. Bugle head screws drive in quickly and have good holding power in most materials.

screw sizes nz

When driven into pre-drilled holes, they are a better choice than finish nails for setting door jambs or mounting trim and moldings: trim head screws are less likely to split thin or delicate wood parts. Traditional flat and oval head screws lend a nice clean look to projects but require a conical recess for their heads drilled with a countersink. In contrast, most flat head production screws are self-countersinking: they create their own recess that allows the head to sit flush.

Among the screw head types that sit proud of the work surface are traditional round head, pan head and cheese head aka fillister head screws. Each has a relatively small head with a flat bottom that bears against the surface of the workpiece. This offers a reasonable amount of hold in hardwoods, but in softer species, the smaller heads tend to crush the wood at the surface. Screws with larger heads offer more contact area with the work surface and a greater resistance to penetration and pull-through.

These are a great choice for mounting hardware such as drawer slides, where you want good contact with the hardware but need the screw head to not stick up too far. Washer head screws look like regular round head screws with small washers set under their heads. The added surface area on the underside of the head prevents them from sinking too deeply, especially when driven with power drivers. They excel wherever two parts are joined but must remain adjustable, such as attaching a drawer front to a drawer box.

Wafer head and flanged head screws have large, flat coin-like heads. However, many woodworkers still do use Phillips head screws, which came into production in the s and became popular because their cross-slot recess automatically centers on the tip of the screwdriver. They do have a tendency to cam out, especially when used with power drivers. But a little-known fact is that Henry Phillips designed his screws to do this on purpose! To help speed up automobile production, the cam out helped prevent workers from over-tightening Phillips head screws with early power drivers, which lacked torque-limiting adjustability.

Although there are dozens of modern drive styles found on screw fasteners hex, polydrive, spanner head, etc. The majority of TORX-drive woodworking fasteners are deck screws, but the drive style is gaining popularity for general-purpose construction and cabinet screws, too.W-Cut TM provides low installation torque which allows for fast driving and ease of install Zip-Tip TM allows for faster penetration Unique thread design draws two substrates together while washer head allows zero gap joints Climatek TM coated screws provide corrosion resistance in pressure treated wood with corrosive ground contact ESR approved for structural applications.

For use in heavy duty structural applications such as LVL and deck substructure, as a replacement for lag screws, and other remodeling applications. For use in interior and exterior conditions, and the GRK Climatek coating is approved for use in treated lumber. Typical applications for stainless are in corrosive environments such as lakes, pools, spas, decks, and boardwalks. Compatible with most wood types including cedar, redwood and ipe.

Typical applications for stainless are in harsh salt water environments such as coastal, industrial and agricultural areas. RSS Product Information. RSS Technical Drawing. Where to buy. W-Cut TM provides low installation torque which allows for fast driving and ease of install Zip-Tip TM allows for faster penetration Unique thread design draws two substrates together while washer head allows zero gap joints Climatek TM coated screws provide corrosion resistance in pressure treated wood with corrosive ground contact ESR approved for structural applications Where to Buy Code Approvals.

Heavy duty framing. LVL Fastening. Ledger Boards. Interior and Exterior Remodeling. Star Drive Bits View Product. Does your Climatek coating contain any heavy metals such as Cadmium? No, GRK's coating does not contain any heavy metals. What does GRK mean when they state wood was tested at a specific gravity? There is a number assigned to specific wood types.

This number helps to determine the Tensile and Shear of fasteners used in these gravities. Yes, Grk screws can be used in MCQ treated lumber. When should I use stainless steel screws? Anything within 1 mile of the coast should use Stainless Steel fasteners and anything within 15 miles of the coast should use Stainless Steel fasteners.

The GRK Climatek coating provides superior corrosion resistance, allowing the screw to be used in both interior and exterior applications as well as pressure treated lumber.This page contains individual pdf downloads of technical information relating to Bolt Products.

This information has been produced to help our customers choose the right fasteners for the job. The information is based on Ajax Spurway Fasteners amongst others. These fasteners may vary slightly to other manufacturers. Headmarks Bolts. Standard Bolt Product Range. Design of Bolted Joints for General Engineering. Tightening of Structural Bolts. Coronet Load Indicators. Cup Head Square Neck Bolts. Metric 8. Metric Metric Hexagon Nuts. The Torquing of Stainless Steel.

Technical Information This page contains individual pdf downloads of technical information relating to Bolt Products. Button Cap Screw - Imperial. Button Cap Screw - Metric. Cap Screw - Imperial.

Cap Screw - Metric. Hexagon Set Screw - Imperial pg1. Metric 4. Hexagon Set Screw - Imperial pg2. Hexagon Set Screw - Metric pg1. Hexagon Set Screw - Metric pg2. Grading Strengths Grading Strengths. Hexagon Nuts and Hexagon Lock Nuts. Nyloc Nuts Metric. Nyloc Nuts BSW. Correct Use of Jam or Lock Nuts. Hose Clips. Aluminium Alloy Rivets with Steel Mandrels. Steel Rivets with Steel Mandrels. Corrosion Protective Coatings. Tapping Drill Tables. Thread Screw Pitches. Material Compatibility.

Rebar connection with fischer Superbond. Rebar connection with fischer injection mortar FIS V.Righty-ho, lets jump right in…. The pilot hole recommendations in the chart are typical for softwoods.

Hardwoods may well need a slightly larger pilot hole.

Screw Anchors

Simply hit reverse and take it out. In masonry you always have the option to re-drill the hole one size bigger drilling through the existing wall plug and use a bigger plug, red up to brown for example. Metric screws are simply measured and the thickness is given in millimeters. By coincidencethe size of an imperial screw head also roughly equates to the gauge. For example an 8-gauge screw has an 8mm wide head….

How deep does a wall plug need to be? Blue wall plugs are another example, they can be either 8mm or 10mm, go figure! Incidentally if you want to help support this site, grab your… screws etc. This is an excellent and useful article on screw fixings. I used it this morning to show new member of the team here at Spur Shelving the difference between different fixing sizes and which plugs to use. I explained how using a substantial fixing on flimsy twin slot uprights will not work as the countersink is not deep enough but on genuine Spur which we make in Devon England will take the larger screw size and still allow the bracket to fit.

I guess we got the design right in so why change it. Insist on the best it will be branded Spur UK. Now, how do I know which plugs to use with which screws?

Is there a tip on drilling into plaster walls? Many thanks. So sorry Jan, Been without internet in Croatia for ages and have been travelling back.

Assorter cases SPAX

Your message fell through the gaps in the internet. A heavy mirror really needs to go into the studs of the wall. Once you have the studs located you can go ahead and use normal wood screws.