Fasteners are often produced in a range of coating options.  Coating affects the durability and cosmetic finish of a product. Below is a brief run through of the options available from us.

Black/Self Colour/Unplated

Black in colour, they are generally used on nuts, washers, screws and bolts that are most likely to be welded

Zinc Plating

The process that involves an electrolytic application of zinc to metal. This produces oxidation of the protected metal, and the zinc coating acts as a barrier to corrosion.

Bright Zinc Plated

The most common, silver looking, and provides effective corrosion protection on steel fasteners.

Zinc Black

A zinc plating is applied with a black passivate on steel fasteners to provide corrosion resistance and a cosmetic look for applications of the same colour.  There are a number of zinc alloy processes that are available; zinc-iron, zinc-cobalt, zinc-nickel, zinc-tin alloy.

Zinc Yellow Passivate (ZYP)

This coating is achieved using the same method as Zinc Black but with different alloys to achieve a particular cosmetic look.

Brass

Highly corrosion resistant and is electrically conductive.  Primarily copper and zinc alloy.  Generally available in most metric and imperial sizes.  Be warned – the price can be volatile!

Nickel

Similar to bright zinc but slightly more of a yellow tint and very shiny and smooth.  Very hard wearing and durable. Mostly used on machine screws.

Phos Oil

Dark grey plating for steel parts for corrosion resistance and lubricity.

Cadmium

Old style plating which offers protection from corrosion and resists the growth of mould and bacteria. No longer commonly used.

A2 Stainless Steel

Most common stainless steel A2(304).  Offers excellent corrosion resistance for most applications.  Widely available in metric and imperial.

A4 Stainless Steel

Marine grade A4(316).  Offers increased resistance to chloride corrosion compared to A2(304).  Widely available in metric sizes and can be sourced in imperial threads.

A4-80 Stainless Steel

The same as A4 but a higher grade. Only available in metric sizes.

Galvanised

Similar process as Zinc plating but a thicker layer is applied.  Has a higher corrosive resistance than zinc.  Commonly used in agriculture and marine industries.

AVAILABLE NOW to our Facebook and eBay shop….Set screws

But don’t despair while you are waiting for our set screws to be added you can still get the majority of our BSF Bolts range online which is available right now to buy.

www.ebay.co.uk/usr/arunfasteners
www.facebook.com/arunfasteners

For our full stock range go to www.arunfasteners.co.uk

#bsf #bolts #nuts #screws #fixings #imperial #metric #fasteners #metal

Phillips Head Screwdriver

The Phillips head screwdriver was designed by Henry F Phillips and was patented in the 1930s, it was designed to provide better contact with the screwdriver than the original flathead Screwdriver.

The Phillips’ head was designed to improve contact and torque. Its “X” design means it won’t slip out of the X-slotted screw. Instead, it grips the screw firmly in the centre, provided it’s the suitable size for the screw.

Screwdriver Tool Craft Red Phillips Metal  Screw, Construction Material

A clever customer of ours has been turning M8 and M10 flat washers, and M5 repair washers into an amazing sculpture.

Arun fasteners stock a variety of these uncommon but sought after imperial thread screws.

They provide a traditional look, particularly to timber frame buildings and doors, and we’ve often sold them to farmers and restoration companies.

We stock the following sizes:

½” x 1 ½” long Sq Head Coach Screws in self colour

¼” x 3” long Sq Head Coach Screws in self colour

¼” x 3” long Sq Head Coach Screws in Zinc Plated

3/8” x 1 long Sq Head Coach Screws in self colour

5/16” x 1 ¼” long Sq Head Coach Screws in self colour

5/16” x 1” long Sq Head Coach Screws in self colour

5/16” x 4 ½” long Sq Head Coach Screws in Galvanised

Please call for current stock levels and prices.

New Blog Post coming this Friday at 10 AM. Be sure not to miss it.

coffee BREAK

We are proud to supply fasteners to R.H Phillips, based in west sussex.

R H Phillips was Founded in the early 1960’s by Robert Harry Phillips, RH Phillips has evolved as a company continuing to deliver quality engineered products that exceed our customers’ expectations.

They are a British Sub contract design and engineering company providing precision engineering solutions to a diverse range of customers worldwide covering, defence, aerospace, automotive, oil & gas, commercial, architectural and industrial sectors. Our range of work is diverse, including bespoke water features.

Below are just some of the products they make.

Go www.rhphillips.co.uk to find out more

Aircraft Towbars

We offer a range of robust, user friendly aircraft towbars for use on all popular commercial aircraft. Our towbars are designed for ease of operation and low life costs. High quality British manufacture and design has made Phillips Towbars the obvious choice for industry operators around the world.

Aircraft Stairs

We offer 2 types of aircraft passenger stairs. Fixed geometry steps for servicing today’s regional and commuter aircraft and variable geometry stairs available as parallelogram or telescopic stairs in three height ranges, these are rugged and economic stairs for years of low cost service. Stairs can be supplied in a number of forms, namely towable, self-propelled or pedestrianised variants.

Cargo & Baggage Trailers

All of our baggage trailers are designed to be highly reliable and robust to provide years of arduous service over many years in a busy ramp environment with little or no maintenance. We offer a bespoke service with trailers to suit specific ramp environments. We also supply CMP. Collapsible cargo movement pallets designed specifically to move large quantity loose cargo items to the aircraft.

Clamshell Buckets

RH Phillips is a leading manufacturer of hydraulically operated Clamshell Grab Buckets for truck mounted cranes (TMCs). Having acquired the designs and manufacturing rights for the complete range of buckets from Entecon RH Phillips have retained all the superb features of this bucket design as well as adding subtle changes to further improve the quality and reliability of this well respected Bucket.

The robust build quality and versatility of the RH Phillips Clamshell Bucket range is therefore well known within the industry with thousands of buckets working hard in the field.

The proven reliability of the flagship RH Phillips CSB5 bucket is unrivalled and makes it ideal choice for heavy-duty work on all types of vehicle-mounted cranes handling sand, gravel, rubble soil and rubbish and all other types of loose bulk material.

How to measure the thread

The pitch is the distance from the crest of one thread to the next in mm. TPI (Threads per inch) is used by inch thread

Standard

Otherwise known as UNC Unified National Coarse

standard threads (coarse thread)

UNC meaning Unified Coarse, is the most dominant used in the USA. Often used in the agricultural industry because of their strong coarse threads.  Generally available in steel and stainless steel.  Come in higher grades – high tensile and higher grades available.

Fine

Otherwise known as UNF Unified National Fine.

Imperial TPI's (Threads per inch)

The pitch is the distance from the crest of one thread to the next in mm. TPI (Threads per inch) is used by inch thread

 

SIZEUNCBSFUNFWHIT/BSWSIZEUNCBSFUNFWHIT/BSW
3/16” 32 241 1/8”79127
¼”202628201 ¼”79127
5/16”182224181 3/8”68 6
3/8”162024161 ½”68126
7/16”141820141 ¾”57 5
½”131620122”4 ½7 4 ½
9/16”121618122 ¼”4 ½6 4
5/8”111418112 ½”46 4
¾”101216102 ¾”4  3 ½
7/8”9111493”4  3 ½
1”810128     

 

Attention: new blog post coming this friday 10am. This Months post explains the difference between Standard, Fine and Extra Fine Fasteners.

Here at Arun Fasteners some of our customers have been restoring Gardner Diesel Engines with BSF Fasteners.

BSF meaning British Standard Fine, an old-style British thread. Often used on vintage British automobiles and machinery as its fine thread is preferred. Available in steel and stainless steel although stainless can now be difficult to source.

https://arunfasteners.co.uk/bsf/

Gardner Diesel Engines

L. Gardner and Sons Ltd was a British builder of diesel engines for stationary, marine, road and rail applications. The company was founded in Manchester in 1868. It started building engines around 1895. The firm ceased engine production in the mid-1990s.

Automotive engines

In 1929 a Gardner “4L2” marine engine was fitted into a bus. This conversion was successful and prompted Gardner to introduce the “LW” series of diesel engines, designed especially for road vehicles but later modified and supplied as a marine engine. The LW engine was a modular design, with separate cast iron cylinder blocks and cylinder heads comprising either 2 – 3 cylinders.

During the 1930s a number of LW-series were installed in large luxury cars including Bentleys and Rolls-Royces. The Gardner engine’s reliability and economy coupled to its remarkable refinement and smooth-running abilities, made it the only suitable compression-ignition engine at the time.

During The second world War Gardner’s war work consisted mainly of building diesel engines of their own design. Their 4LK bus engines were also used as the main powerplant in the Royal Navy’s midget submarines.

Post-war diesels

After the war the ‘LW’ diesel engine continued to be built in large numbers for lorries and buses and was later supplemented by the more modern ‘LX’. The larger ‘6L3’ and ‘8L3’ engines were used in railway locomotives.

 

Our new blog is available this friday at 10am.

This months blog contains all your need to know about BSF fixings. One of our recent customers has been telling us all about Gardner Diesel Engines and how they are use BSF fixings to restore it.

So grab a coffee and read our latest post this friday.

A customer has sent us some photos of our fasteners in a much more interesting setting than the boxes we see!

They re-build and prepare Merlyn race cars and provide support for race days.  We provide them with metric, UNC and UNF fasteners.