Category Archives: Bespoke Fasteners

Bespoke Bolts, Bespoke Fasteners, Thread data, Thread Forms, Thread Protection

High-Performance Fasteners: The Ultimate Thread Form Guide

Essential thread types for high performance fasteners

Understanding thread types is critical for selecting fasteners that meet performance, safety, and compatibility requirements. This guide outlines the most common thread systems used in bolts, nuts, and studs—including Metric, Unified, UNJ, UNR, and Whitworth forms.

For over 50 years, Hague Fasteners has manufactured precision threaded fasteners in steels, stainless steels, and superalloys. Therefore, we know how thread selection affects strength, fatigue life, seal integrity, and interchangeability.

How to Identify a Thread

  • System: Metric ISO, Unified, Whitworth, Pipe, Trapezoidal, Buttress
  • Diameter and Pitch: Metric uses mm pitch; Unified/Whitworth use TPI (threads per inch)
  • Series: Coarse, Fine, Extra Fine, Special
  • Class of Fit: Metric (6g, 6H); Unified (1A/1B to 3A/3B)
  • Form Geometry: ISO/Unified 60°, Whitworth 55°, UNJ/UNR radiused root, ACME 29°, Trapezoidal 30°
  • Hand/Starts: Right or left-hand, single or multi-start

Metric & Metric Fine Threads (ISO, 60°)

Metric threads use pitch in millimetres. Coarse “M” is standard. Fine “MF” improves preload control and engagement in thin sections.

Size Coarse Pitch (M) Common Fine Pitches (MF) Angle Notes
M6 1.0 0.75 60° General purpose
M8 1.25 1.0 60° Machinery, structures
M10 1.5 1.25, 1.0 60° Better clamp control
M12 1.75 1.5, 1.25 60° Thin sections
M16 2.0 1.5, 1.0 60° Vibration resistance
M20 2.5 2.0, 1.5 60° Flanged joints
M24 3.0 2.0, 2.5 60° Pressure boundary
M30 3.5 2.0, 2.5, 3.0 60° Large studs

FAQs on Metric Threads

  • What’s the difference? Metric Fine has smaller pitch for better preload control.
  • When to use MF? Thin walls, short engagement, vibration resistance.
  • Same angle? Yes—both use 60° flank angle.

Unified Threads UNC & UNF (ASME B1.1, 60°)

Size (inch) UNC (TPI) UNF (TPI) Angle Notes
1/4 20 28 60° General fixtures
3/8 16 24 60° Preload control
1/2 13 20 60° Structural fasteners
5/8 11 18 60° Studs, couplings
3/4 10 16 60° Pressure equipment
1 8 12 60° Heavy joints

FAQs on UNC & UNF Threads

  • What’s the difference? UNC is coarse, easier to assemble. UNF is fine, better clamp control.
  • Which is stronger? Depends on application—UNC for depth, UNF for engagement.
  • Same angle? Yes—60° flank angle.

UNJ & UNR Threads (ASME, 60°)

UNJ threads feature a controlled root radius for improved fatigue strength. UNJC is coarse pitch, UNJF is fine pitch. UNR is a rounded-root version of UNC/UNF.

FAQs on UNJ & UNR Threads

  • UNJ vs UNJF? UNJF is fine pitch within the UNJ family.
  • UNJC vs UNJF? UNJC is coarse pitch, same root radius.
  • What is UNR? Easier to roll, less controlled than UNJ but fatigue resistant.
  • Where used? Aerospace, defence, rotating equipment.

Whitworth Threads BSW & BSF (BS 84, 55°)

Whitworth threads use a 55° flank angle with rounded crests and roots. BSW is coarse; BSF is fine.

FAQs on BSW & BSF Threads

  • BSW vs BSF? BSF has finer pitch for thin sections.
  • Interchangeable? No—Whitworth differs from Metric/Unified.
  • Where found? Legacy British equipment, restoration, heritage plant.

Get in Touch

Contact Hague Fasteners today for a custom quote or technical consultation.

Hague Fasteners Limited do not take any responsibly for any information used

Bespoke Bolts, Bespoke Fasteners, Bolt and Nut Manufacturing, Custom Fasteners, Non Standard Fasteners, Special Fasteners, Uncategorized

UK made Custom Transport Fasteners for Rail and Vehicle use

At Hague Fasteners, we engineer and manufacture specialist fasteners for the transport sector- supporting rail, automotive and military vehicle applications with precision, compliance and durability.

Hague Fasteners are the reliable source for transport fasteners.

Rail Industry Expertise

We supply custom fasteners for rolling stock refurbishment and infrastructure maintenance across the UK rail network, including London Underground. Our components are trusted in:

  • Track component upgrades
  • Vintage steam engine restoration
  • Holding down and anchor bolt installations

Automotive Fasteners: Metric & Imperial

Our automotive-grade fasteners include:

  • Wheel studs and wheel nuts
  • Fine pitch hexagon head bolts
  • High tensile, galvanised, zinc-plated, phosphated, and chemically blackened finishes

Moreover, we manufacture in both metric and imperial inch sizes, ensuring compatibility across legacy and modern vehicle platforms.

Ancillary Transport Sectors We Serve

  • Rolling stock refurbishment
  • Rail infrastructure maintenance
  • Vintage and specialist vehicle producers
  • Military vehicle manufacturers
  • Automotive component suppliers
  • Track component manufacturers

Fastener Types We Manufacture

Common ApplicationsFastener Types
Rail & AutomotiveWheel Studs, Track Bolts, Plow Bolts
InfrastructureAnchor Bolts, Holding Down Studs, Fish Bolts
Specialist VehiclesBi-Hex Bolts, Torx Screws, Socket Capscrews
General EngineeringU Bolts, J Bolts, Nyloc Nuts, Locknuts, Milled Components

Materials & Grades

We work with a wide range of certified materials, for example:

  • Carbon Steels: ISO 898 Grades 8.8, 10.9, 12.9, 14.9
  • Engineering Steels: EN3A, EN8, EN16T, EN19T, EN24T
  • Construction Steels: S235, S275, S355, S355JR
  • Stainless Steels: AISI 303, 304, 316, 316L, A2 & A4 (Classes 70 & 80)

Why Choose Hague Fasteners?

  • Small batch specialists with rapid turnaround
  • UK-based manufacturing with full traceability
  • Custom designs for legacy and specialist transport systems
  • Compliance with industry standards and material certifications
Precision-engineered fasteners for rail, automotive, and military transport systems

Get in Touch

Ready to source precision fasteners for your transport project? Contact Hague Fasteners today for a custom quote or technical consultation.

Bespoke Fasteners, Birmingham Business Post, Bolt & Nut Manufacturing, British Manufacturing, British Stainless Steel Association

Reliable Specialist Fasteners For The Water Industry

Reliable Specialist Fasteners for the Water Industry: Hague Fasteners’ Precision Bolting Solutions

Hague Fasteners providing specialist bolting for the water industry

The water industry has become one of the fastest-growing sectors for specialist fastener exports, driven by global demand for robust, corrosion-resistant bolting solutions. From desalination plants to sludge treatment facilities, Hague Fasteners supplies precision-engineered fasteners that meet the most demanding specifications.

Our components are trusted by international water reuse companies and UK institutions including the Environment Agency and British Waterways, thanks to our expertise in manufacturing bespoke fasteners in Duplex, Super Duplex, and high-performance nickel alloys. Whether you’re sourcing engineer studs for reverse osmosis systems or corrosion-resistant socket cap screws for filtration equipment, Hague Fasteners delivers certified, project-specific solutions with full traceability and rapid turnaround.

Engineered for Harsh Conditions

Water treatment environments demand exceptional material integrity. Therefore, we manufacture in all grades of:

  • Duplex and Super Duplex stainless steels (UNS S31803, S32760, S32750)
  • 300 series stainless steels
  • Nickel alloys such as Inconel 625, Monel 400, and Hastelloy C276

These materials offer superior resistance to pitting, crevice corrosion, and chloride-induced stress cracking—critical for reverse osmosis plants, purification systems, and filtration equipment.

Bolting Solutions for Every Application

Our specialist fasteners are designed to perform under pressure, with precision threading and dimensional accuracy. We supply:

  • Engineer Studs and Waisted Stud bolts for high-integrity flange connections
  • Hex Bolts, Bi-Hex Bolts, and Heavy Hex Nuts for pump and valve assemblies
  • Allthread Studding for structural anchoring in treatment tanks
  • Locking solutions including Nyloc Nuts, All metal Lock Nuts, Quadlock and Trilock Nuts for vibration resistance
  • Socket Capscrews, Low Head Socket Capscrews, and Torx Drive Fasteners for compact, high-torque installations
  • Slotted Countersunk Screws and Pozi Pan Head Screws for panel and enclosure applications

Serving Ancillary Water Sectors

Moreover, we support a wide range of water-related industries, including:

  • Water Treatment and Sludge Treatment Plants
  • Filtration and Purification System Manufacturers
  • Desalination and Reverse Osmosis Installations
  • Water Utility Companies and Infrastructure Contractors

Material Versatility

Beyond stainless and nickel alloys, we offer fasteners in:

  • Copper, Naval Brass, and Brass CZ121
  • Silicon Bronze UNS C65500 and Phosphor Bronze
  • Aluminium, Aluminium Bronze CA104, NES833, and C63000
  • Incoloy 800H/HT, Inconel 718, 825, and 904L

These materials are ideal for non-sparking, marine-grade, and low-conductivity applications.

 

Whether you’re specifying fasteners for a new desalination plant or retrofitting a sludge treatment facility, our technical team delivers bolting solutions that meet international standards and project-specific requirements.

Contact Hague Fasteners

Ready to specify corrosion-resistant fasteners for your next water industry project? Contact Hague Fasteners today to discuss your requirements.

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Bespoke Fasteners, Engineering Capacity, Non Standard Fasteners, Special Fasteners, Uncategorized

Steel Bar Cutting

Hague Fasteners are please to take delivery of another new steel bar Cutting machine to our ever expanding Special Fastener Production Facility.

Our new Steel Bar Cutting NC controlled automatic bandsaw is optimising our incoming material (up to 300mmĂž) ready for our in house special fastener manufacturing.

This new investment has been made due to Hague’s ever increasing order book and with the sawing often being the first stage of production. This new plant sees material received and processed much faster and with higher accuracy.

Whilst Hague Fasteners specialise in the smaller batches of custom made special fastener components, the new Steel Bar Sawing machine also gives flexibility of cutting larger batch runs. Where needed the NC can control various billet length cuts from a single bar set-up.

The accurate NC controls also enable the optimum speed and feed rates when cutting some of the super alloys and Nickel based materials such as Nimonic, Hastelloy, Inconel and so on.

Continued growth and investment assured Hague’s clients of the very best in customer service and reliability.

Bespoke Bolts, Bespoke Fasteners

Bespoke Fasteners

Bespoke Fastener

Bespoke Fasteners are our speciality.

Hague Fasteners are your solution for any Bespoke Fasteners or Custom Precision Engineered Components.

sposAs specialist manufacturers, all of the items we supply are made to order.

We are a major manufacturer of all specialist Bolts & Nuts, we will be more than happy to quote against your specific enquiries. We assume, of course, that they are not a standard imported sizes that are available from a standard merchant.

Our forte is special high integrity items in critical material grades manufactured to international standard or Bespoke Fasteners and components produced to customer or OEM designs & drawings.

We are experts in the real low quantity manufacturing of special fasteners to customers designs and drawings, or relatively standard items but in non-stocked materials.

We supply heavily to all sectors of Engineering Specialists and General Engineering Merchants where they need a solution for nuts and bolts that are not available form the imported distributors.

We are literally talking about quantities such as 5pcs 10pcs 50pcs and so on, not hundreds and thousands.

Hague Fasteners are on hand to manufacture any special bespoke fasteners you may need.

Bespoke Fasteners