Trojan Special Fasteners Ltd | Specialist Nuts Fasteners | Nuts Bolts Washers | Precision Polygon Turning | Fastener Manufacturer

UK CBAM: New Draft Legislation on Emissions Monitoring and Verification Published

UK CBAM update 9th April 2026

Happy Chinese New Year

Happy Chinese New Year to all our friends celebrating it!

M36 DIN6334 Connector/Coupling Nuts Oversized Retapping

Aartee Bright Bar appointed Administrators

Fastener Clamp Load

What is Clamp Load?

All Metal Prevailing Torque Locking Nuts

All Metal Prevailing Torque Locking Nuts

7/8 BSP Special Nuts (46x40mm THK) DC EN8M Self Colour

M16x1.5 Special Nylon Insert Nuts to Drawing in Brass

Special Nylon Insert Nuts in Brass

M10 GR8 DIN935 SLOTTED NUTS ZINC

M10 Grade 8 DIN935 Slotted nuts Zinc Cr3 Passivated finish #castlenuts and #slottednuts are used with #cotterpins to secure a nut on a mating part. These are by far the most secure way of...

M16x1.5 special nylon insert nuts to drawing in Brass CZ121

M16x1.5 special nylon insert nuts to drawing in Brass CZ121 #nylocs are prevailing torque fasteners that have a nylon 6 or 66 ring. This ring deforms when applied to a mating thread and...

M24 DIN6330 Spherical Seat Nuts 316s/s

Spherical Seat Nuts

M24 DIN934 Nuts made from Aluminium 2011T3

M24 DIN934 Nuts made from Aluminium 2011T3

M24 DIN934 Nuts made from Aluminium 2011T3

M24 DIN934 Nuts made from Aluminium 2011T3 Aluminium is not available in hexagon form, so we use a polygon turning process to quickly and efficiently turn a hexagon from round bar. Aluminium...

Castle and Slotted Nuts

Castle and Slotted Nuts What are they? How are they used?

M8 CONNECTOR NUTS (13x16mm THK) BRASS

Connector Nuts in Brass

M8 CONNECTOR NUTS (13x16mm THK) BRASS

M8 CONNECTOR NUTS in Brass - our customer had a requirement to have 100 of these connector nuts made. We manufactured them within the day and had them ready for collection. Connector nuts...

Castle and Slotted Nuts

Trojan Special Fasteners Ltd can manufacture all manner of slotted and castle nuts. Castle nuts are typically hex nuts with usually 6 slots (60 degrees apart) in a reduced diameter round...

M14x1.5 to 1/2 BSF Engineering Wheel Studs

Wheel Studs to be Remade

Hexagon on Threaded Rod

Polygon Turning On Rods

Hexagon on threaded rod

Our customer tasked us with putting a hexagon face for a spanner on some all thread rods he had. He wanted the biggest hexagon size we could produce on the 30mm allthread bar - knowing that we...

M14x1.5 to 1/2 BSF Engineering Wheel Studs

One of our customers had some wheel studs he wanted remade for an old cart. We didn't need him to be an expert because we asked him to send us a stud and we will duplicate it for him - which is...

5/8 UNC Paraboloid Dome Nuts Stainless Steel

Paraboloid Dome Nuts

M20x1.5 Special Nuts

These M20x1.5 special nuts were made for a cheaper price than our customer used to buy these at. Additionally, these type of nuts (with a thin spigot) are used as locking nuts. Typically once...

5/8 UNC Paraboloid Dome Nuts Stainless Steel

5/8 UNC Paraboloid Dome Nuts Stainless Steel It took a while to get the shape of the dome perfectly right, but we managed it in the end and rapidly manufactured these dome nuts in stainless...

M16 BS3692 Full Nuts NES833 Nickel Aluminium Bronze

Nickel Aluminium Bronze Metric Nuts

Metric DIN979 Thin Castle Nuts

Bright bar turned DIN 979 Thin castle nuts precision turned for our customer in record time. Trojan Special Fasteners Ltd prides itself on its speed and efficiency.

Phosphor Bronze Metric Nuts

M33 Full nuts machined from diameter PB102 Phosphor Bronze bar. Each of these nuts is precision machined in house by Trojan Special Fasteners Ltd. Increasingly we've found that fewer sizes of...

Special Screws

Special Screws with mating slotted hex nut portion machined to our customer's specification.

Stay Nuts

STAY NUTS Trojan just manufactured some Stay Nuts in three different sizes using the same batch of material. You may notice that dimensionally these nuts are all the same size except for the...

Connector nuts with viewing port

Trojan just manufactured 4 different sizes of these extra long connector nuts. In addition to having a full thread running the length of these fasteners, we were also tasked to drill a through...

Published on Fastener and Fixing!

We have just had an article published on the fastener and fixing website. Do clilck on it to have a look: [Fastener and Fixing...

Special Zinced Spacers

Check out these beautifully machined spacers. Well, you might ask, why would someone need a spacer? In this instance, they are going to be used to create a space (get it?) between two fixed...

Slotting These Babies

Our customer provided us with some lengths of brass all threaded bar - all we had to do was put a slot on one side so that they become little brass grub screws! We can slot, tap, reduce, resize...

M16x1.5 special nuts to drawing

Fasteners such as these present their own manufacturing problems - such a small wall coupled with a short height mean that we had to manufacture some special tooling in order to just thread...

ISO9001:2015 Newly Compliant

Trojan Special Fasteners just signed off on upgrading their existing ISO 9001:2008 certification to the latest ISO9001:2015 quality management system. We have streamlined our quality processes...

M33 Special Square nut with Spigot

What an interesting nut! Our customer wanted a fastener with a turned down spigot on one end and un chamfered square portion. In typical Trojan fashion, we machined the fasteners in record...

Brass Threaded Spacers

Our customer provided us with an imported sample nut and asked if we could get close to the product they wanted. The finish on their product was absolutely terrible - and the thread wasn't even...

Pipe Nuts

These look strange don't they? Nuts with such a large inner diameter to hexagon across flat - strange, but necessary for our customers who look for fasteners with a BSP or British Standard Pipe...

12 slotted Nuts

12 yes TWELVE slots on a nut so small... Yes, we machined them with accuracy, ease and speed. These type of slotted nuts tend to go on parts where a degree of fine rotation is needed in...

Non Preferred Sizes

All fastener standards have specific sizes which are commonly used. However, from time to time, non preferred sizes come into play. When the original fastener sizes were being standardised...

Slotted Nuts

Slotted nuts are often called castellated nuts. They have slots cut into one side. Typically there are a total of 6 opposing slots, but this number can vary - in very large nuts 8 are common, as...

5/16 UNF hex set screws 3.1/2 inches long

Whilst making bolts, setscrews and other externally threaded rods is not our speciality, we still managed to precision machine these 3.5 inch long (under the head) hexagon set screws in bright...

1.1/4 UNC to M20 Connecting Adapter

In a cost saving exercise for our customer, we manufactured 4 pieces of the unified to metric threaded hexagon connector nuts. Our customer wished to use a brush head on a device that came in...

M16 SPECIAL FLANGE NUTS IN BRASS

We recently manufactured a small batch of just 10 flange nuts out of naval brass for one of our customers. Smaller quantities are not an issue and as you can see, the quality is exceptional.

M6 Special Flat Cap/Blind nuts

It took us just 2 hours to make a small batch of these cap nuts to our customers sample. He didn't know what thread was being used and he found the cap the sample he had wouldn't go all the way....

Round boss nuts in 1.4401/316s/s

M12x1.75 Male to 1/2 BSW (12tpi) Female adapter with cross thread and grub screw

A customer asked us to prototype an adaptor of theirs to join two incompatible parts, one with a metric M12x1.75 female thread and the other part with a male 1/2x12tpi BSW thread. We said no...

1/4 BSF Single Slot special nuts to drawing

We were provided with a customer's drawing and a sample to work from on this part. It involved a number of different processes, and ensuring the finish was right was key to this...

M16x1.5 DIN985 NYLOC NUTS IN BRASS

We made some nylon insert nuts in a fine pitch format out of CZ121 (CW614N) hexagon brass bar. These were made to DIN985 standard and are often known as nylock nuts or nyloc nuts. These are a...

M4 to M3 reducing hexagon coupler nut

We just made some M4 to M3 reducing hexagon coupling nuts for one of our regular customers in 303 stainless steel material. The nuts are tapped half way in each thread form from either side....

CA104 Nuts

Our customer free issued a bar of 3 inch diameter CA104 Aluminium Bronze for us to manufacture special M42x3.0 special hexagon nuts to their drawing. Not only was this done with expert precision,...

BSP special nuts in Brass

We made a small batch of 1/4 BSP nuts to a customer's specification with no external chamfers. These nuts are tiny, but as you can see, they're expertly turned from hex Brass CW614N/CZ121...

Copper Nuts!

We just manufactured some M10 hex lock nuts to BS3692 standard in Copper C101. Thus was accomplished by machining a round bar of the material into hexagon. Something we do on a regular basis...