Tag Archives: Best Quality Fastener Manufacturers

Understanding machine screw sizes is essential for anyone working with precision fasteners, whether in manufacturing, engineering, maintenance or repair. Even small differences in diameter can affect fit, performance and safety. Therefore, having a clear reference for fractional‑inch, decimal and millimetre equivalents is incredibly useful.

At Hague Fasteners, we regularly support customers who work across both imperial and metric systems. As a result, we’ve created a simple and accurate reference chart to help you convert fractional‑inch measurements into decimal and millimetre values with confidence

Why Machine Screw Size Conversions Matter

Machine screws are produced in a wide range of diameters, and many industries still rely on fractional‑inch sizing. However, drawings, OEM specifications and international standards often mix imperial and metric units. This means engineers frequently need quick, reliable conversions to avoid errors.

Accurate sizing helps with selecting the correct drill size, ensuring thread compatibility, avoiding tolerance issues, maintaining safety and performance, and reducing rework or material waste.

Machine Screw Size Conversion Chart

This chart provides a clear comparison and is designed to make fastener selection easier, especially when working across mixed measurement systems. For specific guidance on your application, please contact sales@haguefasteners.co.uk

Machine Screw Sizes

Size Number	000	00	0	1	2	3	4	5	6	8	10	12
Diameter	.034	.047	.060	.073	.086	.099	.112	.125	.138	.164	.190	.216
Hole Diameter	.040	.053	.066	.080	.094	.107	.120	.133	.146	.173	.198	.224

Decimal and Millimeter Equivalents of Fractional Parts of an Inch

Fraction	Decimal	Millimeter	Fraction	Decimal	Millimeter	Fraction	Decimal	Millimeter
1	1.0000	25.4000	21/32	0.6562	16.6687	5/16	0.3125	7.9375
63/64	0.984	25.0031	41/64	0.6406	16.2719	19/64	0.2969	7.5406
31/32	0.9688	24.6062	5/8	0.6250	15.8750	9/32	0.2812	7.1437
61/64	0.9531	24.2094	39/64	0.6094	15.4781	17/64	0.2656	6.7469
15/16	0.9375	23.8125	19/32	0.5938	15.0813	1/4	0.2500	6.3500
59/64	0.9219	23.4156	37/64	0.5781	14.6844	15/64	0.2344	5.9531
29/32	0.9062	23.0187	9/16	0.5625	14.2875	7/32	0.2188	5.5563
57/64	0.8906	22.6219	35/64	0.5469	13.8906	13/64	0.2031	5.1594
7/8	0.8750	22.2250	17/32	0.5312	13.4937	3/16	0.1875	4.7625
55/64	0.8594	21.8281	33/64	0.5156	13.0969	11/64	0.1719	4.3656
27/32	0.8438	21.4312	1/2	0.5000	12.7000	5/32	0.1562	3.9688
53/64	0.8281	21.0344	31/64	0.4844	12.3031	9/64	0.1406	3.5719
13/16	0.8125	20.6375	15/32	0.4688	11.9062	1/8	0.1250	3.1750
51/64	0.7969	20.2406	29/64	0.4531	11.5094	7/64	0.1094	2.7781
25/32	0.7812	19.8438	7/16	0.4375	11.1125	3/32	0.0938	2.3812
49/64	0.7656	19.4469	27/64	0.4220	10.7188	5/64	0.0781	1.9844
3/4	0.7500	19.0500	13/32	0.4062	10.3187	1/16	0.0625	1.5875
47/64	0.7344	18.6531	25/64	0.3906	9.9219	3/64	0.0469	1.1906
23/32	0.7188	18.2563	3/8	0.3750	9.5250	1/32	0.0312	0.7937
45/64	0.7031	17.8594	23/64	0.3594	9.1281	1/64	0.0156	0.3969
11/16	0.6875	17.4625	11/32	0.3438	8.7312	—	—	—
43/64	0.6719	17.0656	21/64	0.3281	8.3344	—	—	—

Supporting Precision Engineering

Whether you’re working on prototypes, small‑batch production or specialist fasteners to drawing, accurate sizing is essential. Hague Fasteners manufacture custom screws, bolts and non‑standard fasteners in both imperial and metric dimensions, ensuring full compliance with your specifications. Moreover, our team is always available to support you with sizing, conversions or bespoke fastener manufacturing.

If you need guidance or require custom fasteners, we’re here to help.

Bespoke Bolts, Bespoke Fasteners, British Fasteners, British Manufacturing, Fastener Manufacturers, Hague Fasteners, Made in England, Manufacture, UK Manufacturing

Made in Britain UK manufacturing excellence- What makes us qualify?

Molly Timmins

Hague Fasteners & Made in Britain: Celebrating True British Manufacturing Excellence

British manufacturing has a long‑established reputation for quality, integrity and engineering expertise. Today, that reputation is not only recognised but actively championed and protected by Made in Britain manufacturing, the official trademark for authentic British‑made products. As a result, Hague Fasteners proudly stands alongside a community of UK manufacturers who share a commitment to responsible production, transparency and world‑class craftsmanship.

For more than 50 years, Hague Fasteners has manufactured high‑integrity, made‑to‑drawing fasteners in the heart of the West Midlands. Moreover, our membership with Made in Britain reinforces what our customers already know. Every component we produce is genuinely manufactured in Great Britain by a skilled British workforce, using processes that transform raw materials into precision‑engineered parts trusted worldwide. Furthermore, this commitment ensures consistent quality, full traceability and complete confidence across every order.

Made in Britain Manufacturing provides customer assurance and quality products www.haguefasteners.co.uk

What Made in Britain Represents

Made in Britain serves as the official, protected trademark that unites UK manufacturers under one recognised symbol of excellence. The organisation brings together businesses that prove their products are genuinely British‑made — not assembled, not partially processed, but fully transformed through manufacturing carried out entirely in Great Britain or Northern Ireland.

To qualify for the Made in Britain trademark, manufacturers must meet strict criteria:

Raw materials or components must undergo a substantial and transformative change through manufacturing processes performed in the UK.
100% of the labour involved in producing the finished product must be based in Great Britain or Northern Ireland.
For digital products, development, coding, quality control and maintenance must all take place within the UK.

As a result, this rigorous standard ensures that the Made in Britain mark remains a trusted symbol of responsible production.

Why Hague Fasteners Qualifies for the Made in Britain Manufacturing Trademark

Hague Fasteners has been a British manufacturer since 1971, producing every component in our Willenhall facility , from raw material cutting to final inspection. Our processes meet and exceed the Made in Britain criteria because:

All manufacturing takes place in Great Britain, carried out by our in-house team of CNC machinists, engineers and quality specialists.
Every fastener undergoes a full, transformative manufacturing process, including forging, machining, threading, heat treatment and inspection.
We supply made-to-drawing components, meaning every item is produced from scratch to meet a specific customer requirement.
Our workforce is entirely UK-based, ensuring 100% British labour on every finished part.

Therefore, the Made in Britain trademark is a natural fit for Hague Fasteners — a symbol that reflects our heritage, our values and our commitment to British engineering excellence.

A Legacy of High-Integrity British Manufacturing for Made in Britain

Hague Fasteners specialises in the manufacture of custom-made special bolting, produced in small to medium batch quantities — from single prototypes to multi-hundred-piece production runs. Every component is made to order, ensuring complete traceability and accountability.

Our expertise includes:

High-integrity fasteners in superalloys such as Monel, Hastelloy, Inconel and Incoloy
Components manufactured to OEM drawings and international standards
Precision machining in Super Duplex, Stainless Steels and Carbon Alloys
Full certification and documentation for safety-critical industries

We also proudly present our ISO 9001:2015 certification and Pressure Equipment Directive Accreditation (2014/68/EU), demonstrating our commitment to quality, compliance and continuous improvement.

Why Made in Britain Matters to Our Customers

Displaying the Made in Britain trademark is more than a badge, however it is a The Made in Britain trademark gives our customers more than reassurance — it gives them certainty. Industries that depend on safety‑critical components benefit from:

Guaranteed UK manufacturing, confirming every part is produced in Britain
Reliable quality, supported by the strong global reputation of British engineering
Complete traceability, essential for nuclear, oil & gas, defence, renewable energy and heavy engineering
Responsible, sustainable production, aligned with strict UK standards

In addition, the Made in Britain mark strengthens confidence among international clients who actively seek British‑made components for their high‑integrity projects.

Hague Fasteners: Proud to Carry the Made in Britain Mark

Our membership with Made in Britain demonstrates who we are: a family‑run British manufacturer dedicated to precision, integrity and engineering excellence. At our Willenhall factory, our expert team leads every stage of production, managing each process from initial enquiry to final dispatch with complete control and accountability.

As a result, when we supply high‑integrity fasteners to industries around the world, the Made in Britain trademark amplifies our commitment. Every component we produce is authentically British‑made, engineered with care and built to deliver exceptional performance.

Discuss Your UK Manufacturing Requirements

If you require high-integrity, British-made fasteners for your project, our team is ready to help. Contact us to discuss your drawings, specifications or certification needs.

sales@haguefasteners.co.uk

Connect With Hague Fasteners

ISO9001 Special Fasteners, ISO9001:2015, ISO9001:2015 Fasteners, Special Fastener

Moving into Q2 with Momentum: Customer focus and quality

Molly Timmins

Hague Fasteners are ISO 9001:2015 certified

We are excited to move into Q2 manufacturing with real momentum. The start of the year has been brilliant, with multiple projects completed and new orders coming in across a wide range of industries. As a result, we enter this quarter with strong energy, clear goals and a continued commitment to delivering high integrity specialist fasteners for customers who rely on precision and reliability, all underpinned by our ISO 9001:2015 quality approach.

Innovation and Improvement in Q2

In Q2 manufacturing, many businesses move from planning into full execution. This is often the point where new initiatives launch, sustainability targets progress, and teams refine their processes for the months ahead. We are no different.

Our Google Review initiative continues to grow, and our partnership with More Trees remains an important part of our sustainability journey. Moreover, as projects scale through spring and summer, material selection becomes more strategic. This is where our expertise in specialist fasteners helps customers choose the right grade, the right performance characteristics, and the right long term solution.

Q2 also brings accountability. We review our goals, measure progress, and ensure we stay aligned with the standards expected across Q2 manufacturing and the wider engineering sector.

Quality and Compliance as a Q2 Priority

Q2 is a natural checkpoint for quality audits, documentation reviews, and compliance updates. Our Registration Certificate approving our Quality Management System to ISO 9001:2015 quality remains central to how we operate, and it directly benefits our customers.

1. It Proves Consistent, High Quality Processes

ISO 9001:2015 quality demonstrates that we follow structured, reliable, and repeatable processes. Customers know we work to a recognised global standard, which builds trust and reduces risk.

2. It Strengthens Customer Confidence and Traceability

The standard requires clear documentation, full traceability, and strong quality controls. Therefore, customers gain confidence that every order is handled with accuracy, accountability, and transparency.

3. It Drives Continuous Improvement Across the Business

Finally, ISO 9001:2015 quality is not a one off certificate. It pushes us to review, refine, and improve our systems regularly. This leads to better efficiency, fewer errors, and a stronger overall customer experience.

Moreover, our involvement with Made in Britain and the British Stainless Steel Association reinforces our commitment to excellence. These memberships support our position within Q2 manufacturing and ensure we stay connected to the highest industry standards.

Growing Engagement and Social Media Interest

One of the most exciting developments this year has been the growth of our social media presence. Our work has reached thousands of people — not only manufacturers, but anyone fascinated by engineering, precision, and the craftsmanship behind specialist fasteners.

It has been incredible to see our content gain such strong interest. Consequently, we are committed to sharing more behind the scenes insights, project highlights, and educational posts throughout Q2, showcasing how specialist fasteners support complex and demanding applications.

Looking Ahead in Q2

As we move deeper into Q2 manufacturing, our focus remains clear and consistent. We will continue improving sustainability and efficiency, maintain the highest ISO 9001:2015 quality standards, and deliver exceptional specialist fasteners for demanding environments.

Above all, we aim to strengthen customer relationships through transparency, responsiveness, and technical expertise. With strong momentum behind us and a clear direction ahead, Q2 is set to be a powerful chapter in our ongoing journey.

Connect With Us

For project enquiries or bespoke fastener requirements, contact Hague Fasteners today.

Bolt & Nut Manufacturing, fastener manufacturing, ISO9001 Special Fasteners, ISO9001:2015, ISO9001:2015 Fasteners

Fastener Manufacturing ISO9001:2015

Jon Hague

Hague Fasteners are pleased to present their Registration Certificate approving their Quality Management System to ISO9001:2015

Hague Fasteners are one of the few specialist manufacturers that have seamlessly upgraded to to the latest QMS standard and are proud to lead the way in the Bolt & Nut Manufacturing sector.

Hague Fasteners have always strived to continually improve Performance and Quality Standards across all areas of the business, thus making the transition a simple one.

Please visit our Quality Page to download our latest Accreditation Certificates or click on the image above.

For the very best service in Special Bolt & Nut Manufacturing, Hague Fasteners is your solution.

Hague Fasteners Limited