Category Archives: Socket capscrews

Time For Change 

Unrivalled experience in manufacturing Fasteners to Clients designs. Total Customer Focus & Ethics make Hague Fasteners Limited, Special Bolting UK stand out from the crowd.
Hague will give you a refreshing change.
Small Enough To Care : Big Enough To Deliver (since 1971)

NonStandard Socket Screws

NonStandard Socket Screws

Many of the NonStandard Socket screws Hague Fasteners manufacture are made to customers specific designs and drawings, however Hague Fasteners have recently seen a sharp increase in the number of Standard Socket Screws they are being asked to manufacture.

Due to exceptional demand, new production methods have been recently introduced to ensure Hague can meet the growing demand for regular Socket Screws where Customers specifications now dictate the preferred Country of manufacture to be of EU or UK origin, and where full certification is required.

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Hague Fasteners pride themselves on only using British or European Alloy Steels in the production of their Special Fasteners. Certification is the norm not the exception and they are always supplied as a matter of course Free Of Charge.

Hague Manufacture all Standard Socket Screws in any materials more commonly to dimensions stipulated in the following international standards:

DIN 912 Socket Capscrews
DIN 6912 Socket Capscrews
DIN 7984 Socket Capscrews
ANSI B18.3 Socket Capscrews
ISO 4762 Socket Capscrews
UNI 5931 Socket Capscrews
NFE 25125 Socket Capscrews
BS 2470 Socket Capscrews
BS 4168 Socket Capscrews
1936 Series Socket Capscrews
1960 Series Socket Capscrews
Type CX Socket Capscrews

Over and above the common 10.9 12.9 & 14.9 alloy property classes, Hague are experts in the production of Non Standard Socket products in any material, from 300, 400, Duplex & Super Duplex Stainless Steels through to the complete range of Superalloys including:-

Nickel Alloys ALLOY 20, HAYNES 230, MONEL K500, Inconel 718, INCOLOY 800, NA18, Inconel X750, INCOLOY 800HT, NICKEL 200, CARPENTER 20, INCOLOY 825, NIMONIC 80A, CARPENTER 20CB3, INCOLOY 925, NIMONIC 90, HASTELLOY B2, INCONEL 600 SB127, HASTELLOY B3, INCONEL 601, SB564, UNIMAR 250, HASTELLOY C22, INCONEL 625, HASTELLOY C276, MONEL 400

Hague Fasteners – UK manufacturing of Standard & NonStandard Socket Screws since 1971.

British Manufactured NonStandard Socket Screws

Hague Fasteners are one of the UK’s longest established manufacturers of Non Standard Socket Screws.

Our Socket Screws are often manufactured to common global standards but we are different in that we manufacture in material grades over and above those supplied by other NonStandard Socket Screw manufacturers. Often companies will only modify existing imported bulk produced screws sourced from the Far East, however due to the criticality of all components we supply we pride ourselves in being one of the few manufacturers that supply manufactured Socket and Allied products from UK sourced Alloy Steels, through hardened and tempered to meet the requirements of ISO 898 Part 1 Grades 8.8 10.9 & 12.9

Hague Fasteners, Non standard socket screw manufacturing since 1971.

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Our Socket capscrews are manufactured to all international standards such as DIN 912 DIN 6912 DIN 7984 ANSI B18.3 ISO 4762 UNI 5931 NFE 25125 BS 2470 BS 4168 1936 Series 1960 Series Type CX but our forte is in the Custom Socket Screws made to Customers own critical designs and drawings particularly when superalloys are specified.

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For years we have perfected the manufacture and supply of Heat resistant Non standard socket screws used in sensitive environments in superalloys such as Nimonic 80A, Hastelloy C276 & Monel 400. We often manufacture Special Socket Screw products with modified “undersize” threads to allow for component expansion in extreme working environments.

As proud British manufacturers we welcome all enquiries for NonStandardSocketScrews from 1pc or 10pcs, 25pcs through 100pcs to 500pcs, no enquiry is too small for our custom manufacturing.

Small Quantity Manufacturing Without Idle Claims

Countless companies offer bold claims like “if its standard we stock it, if its non-standard we stock it too”.

Here at Hague Fasteners we offer a simple and substantiated claim. If its not available from stock we will manufacture Bespoke Bolting for you in whatever delivery time you need.

There is no way anyone can stock special hex bolts, nonstandard socket screws or custom hex nut that’s not even designed yet, but once you’re happy with your specification you can source it from Hague Fasteners, manufactured to order, often as fast as if it were in stock, if required.

Being in the Special Fasteners industry for over forty years we know almost everyone claims they can make any specials that are beyond the standard stocked range. The reality unfortunately is not always quite so simple.


That fine thread BSF to UNF Tapping Thread Adaptor that’s non-standard, sure it can be made for you by standard stockists but do you really want to order 50,000pcs and wait 20 weeks? Just last week Hague Fasteners produced and supplied 4 off 1/2″ / M18 Tappex type self cutting thread adaptors in stainless steel in just a few days.

Hague Fasteners have decades of manufacturing expertise producing small quantity special components to all industries around the World, from Major Multi National Corporations to Small Self Employed Operators such as Modern Artists, Entrepreneurs Prototyping or Small Racing Engine Tuning experts.


We are proud to have worked on a Manifold bolting solution to a Private Raceteam this month that solved a failing bolted connection at high temperatures and secured Pole Position, a record lap time, and a First Place Podium Finish.

Small Quantity Bolting Solution Providers since 1971.
No idle claims just real results.

What are Socket Setscrews & Socket Capscrews?

Hague Fasteners are specialists custom fastener manufacturers and distributors, they’re main focus is producing high quality custom made screws, nuts and bolts that are not readily available elsewhere. Established in 1971, Hague have done nothing but grow over the years, and by supplying quality goods they’ve built an excellent reputation with the custom fastener industry and a large client list of new and returning customers from every industry imaginable.
Socket screws are one of the many fastener products that Hague Fasteners manufacture, and they come in more than one form.
Socket Capscrews

Socket Capscrews are a common form of fastener, they have an Allen key socket in their head which is used to tighten and loosen them and they’re very strong, making them ideal for more stressful situations.
Socket Setscrews

Socket Setscrews are similar to capscrews, but they have no head. This allows them to be threaded completely.
There are many types of socket setscrews; Flat, Domed, Cone, Cup, Knurled Cup and Extended. All of which have different purposes within different industries. As these screws have no head they’re used often by engineers who need to use fasteners but don’t want the head showing or cannot afford for any excess steel to be showing as it could affect the project’s design or functionality.
Thanks to Hague Fastener’s experience, equipment and knowledge of the industry it’s never been easier to get custom made screws, socket capscrews and socket setscrews for your projects.
Hague Fasteners produce custom made screws, bolts and nuts from existing samples, OEM designs, and customer drawings to ensure that the fastener(s) you order from us are exactly what you need.

To contact Hague Fasteners for enquiries, sales and general questions about what they do please visit the contact page on their website where you’ll find contact details to email or call them.