Category Archives: Special Fasteners

Special Fasteners, Stainless Steel Fasteners

ASTM A453 660 Fasteners

ASTM A453 660 Fasteners

A286 is a precipitation hardening, austenitic stainless steel designed for use at temperatures up to 1300°F (704°C), where high tensile strength, excellent creep strength and good corrosion resistance are required.

Hague Fasteners are experts in the manufacture of all types of A286 fasteners, from A286 Hex Nuts, A286 Hex Bolts & A286 Studbolts through to complete special fasteners made to Drawings.

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Hague Fasteners manufactured Special Fasteners in specification ASTM A453 660 are used in all types of applications including jet engines, gas turbines, and super-charger components.

A286 is also used extensively in the oil and gas industry, and in high-strength non-magnetic and cryogenic applications. It is austenitic at all temperatures.

HEAT TREATMENT
Two heat treatments are commonly used for this alloy.

For high stress rupture strength:
Solution treat at 1800°F (982°C) for 1 hr, rapid cool, age at 1325°F (718°C) for 16 hrs, air cool. (e.g., ASTM A638 Grade 660 Type 2; ASTM A453 Grade 660 Class B; ASTM A891 Type 2; AMS 5732)

For high room temperature tensile strength and stress rupture ductility:
Solution treat at 1650°F (899°C) for 2 hr, rapid cool, age at 1325°F (718°C) for 16 hrs, air cool. (e.g., ASTM A638 Grade 660 Type 1; ASTM A453 Grade 660 Class A, ASTM A891 Type 1; AMS 5737)

Alternative Incoloy Alloy A286 (Grade 660) materials specifications available:-
Alloy A286 AMS 5731 AMS 5732 AMS 5734 AMS 5737 AMS 5726
AMS 5853 AMS 5895 EN 2399 SPS M-118
NACE MR-0175 Fairchild MS 301, 314 Elliott Turbine MS 618 Weatherford WS-881
Cameron MS-003030
ASTM A891 (Type 1, 2)
ASTM A638 (Grade 660 Type 1, 2)
ASTM A453 (Grade 660 Class A, B, C, D)

Non-standard socket screws, NonStandard Socket Screws, Socket capscrews, Socket Screws, Special Fasteners

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.

Special Fasteners, Stainless Steel Fasteners, Super Duplex, UNS-S32760

Super Duplex Fasteners

Hague Fasteners are critical Special Fastener manufacturers in all Super Duplex materials particularly Super Duplex UNS-S32760 and the various grades and specifications it is referenced in, including:-

Werkstoff 1.4501
S32760 SA
S32760 FLT (Fastener Low Temperature)
S32760 FG (Fastener Grade)
ASTM A276 S32760 Condition A
ASTM A276 S32760 Condition S
Norsok MDS D57
Zeron 100SA
Zeron 100FG (Fastener Grade)
Zeron 100FLT (Fastener Low Temperature)
Astm A182 F55
X2CrNiMoCuWN25.7.4

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Hague specialise in the manufacture and supply of UNS S32760 super duplex fasteners and precision components manufactured to Customers drawings and designs. All Super Duplex Stainless Threaded Fasteners are manufactured from UK/EU sourced manufactured material ensuring critical components are quality assured for use in aggressive environments.

Special UNS S32760 Fasteners such as Hex Bolts , Hex Nuts , Socket Capscrews, Round Washers, Spring Washers, Engineer Studs, Studbolts, Socket Setscrews, Socket Countersunk screws, Split Pins & custom fastener machined components to OEM drawings are manufactured in small to medium batches on a daily basis at Hague Fasteners Limited, with materials released to NORSOK and Exxon Mobil specifications where required.

Our manufactured ZERON 100 (UNS S 32760) high strength, corrosion resistant stainless steel special fasteners offer Strength, toughness, corrosion resistance, whilst our rapid manufacturing times ensure availability whilst maintaining affordability.

F55 Super Duplex (UNS S 32760) offers excellent properties in sea water service (aerated, chlorinated sea water) and also in process pipe work applications (CO2/H2S/Cl environments at high temperatures and pressures).

This Super Duplex grade ensures our manufactured special bolting complies with ISO 15156 / NACE MR0175 part 3 whilst exhibiting excellent resistance to localised corrosion and chloride stress corrosion cracking in marine atmosphere up to 70°C.

Our high integrity fasteners are used in topside process pipe work, production and test manifolds, process gas coolers, risers, gas compression, HT/HP pipe work systems, sub sea flow loops, subsea heat exchangers, and general pipeline applications.

NonStandard Socket Screws, Special Fasteners, Stainless Steel Fasteners

431 Stainless Steel Fasteners

For over four decades Hague Fasteners have excelled in the manufacture of Stainless Steel Fasteners.

One of the most popular Martensitic grades in the Fastener world is the 15Cr2Ni 431 Stainless grade from the original EN57 through the Aerospace release grade S80 Specification, 431 offers fair corrosion resistance with good strength and impact resilience.

431 Stainless threaded fasteners

Our 431 Special Bolts and Non Standard Socket Screws are specified due to various factors including:-
• Fair corrosion resistance
• High hardness and strength
• Wear resistance
• Controlled balance of mechanical properties by hardening and tempering
• Improved toughness
• Magnetic

Due to the favourable properties exhibited, 431 Fasteners are manufactured and supplied by Hague Fasteners into a wide range of engineering applications around the World such as:

Bolting and fasteners for Drive shafts, propeller shafts, bearings, gears, hydraulic rams, valve stems, actuators, satellite parts, conveyor drive systems, packaging machinery and crane pins.

If you need a 431 Stainless threaded fastener, Hague Fasteners are on hand to turn your designs and drawings into quality assured components.

Duplex, Materials, Special Fasteners

Duplex Stainless Threaded Fasteners

2205 Duplex is often the grade specified for Anti-Corrosive Fasteners used in Subsea & Offshore applications where 316/316L simply does not give adequate corrosion resistance.

duplex stainless threaded fasteners

This 22Cr5Ni3Mo Duplex Steel demonstrates the following critical characteristics:

• Twice the strength of standard austenitic grades
• Excellent pitting and crevice corrosion resistance
• Excellent resistance to stress corrosion cracking
• Good weldability
• Moderate impact toughness at temperatures as low as -80°C

Hague Fasteners are supplying Special Manufactured Duplex Stainless Threaded Fasteners into global chemical and oil & gas marine facilities where their special bolting operate in very aggressive conditions.

Further, custom fasteners in Duplex Stainless are manufactured for Food Processing machinery and Chemical Production Plants where the Duplex stainless steels Resistance to stress corrosion cracking is particularly important at higher temperatures.

Duplex Fasteners

Global applications Hague Fasteners supply Duplex UNS S31803 bolting to include:

Offshore oil and gas, chemical processing, desalination plant, pulp and paper, designed architecture in coastal locations, brewing, food processing, bridges, tensioning systems, nuclear reprocessing, tunnel infrastructure, chemical tanker ships.

Contact Hague Fasteners where massive experience in manufacturing precision engineered components in 2205 Duplex (1.4462) gives peace of mind wherever there is an aggressive environment.

Fastener Data, Hague Fasteners Company Information, Non Standard Fasteners, Non-standard socket screws, NonStandard Socket Screws, Socket capscrews, Special Fasteners

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.

developing economies, eBrochure, exotic materials, Gallery, Hague Fasteners Website, Indonesia, Industries, Mexico, MINT, Nigeria, OEM, Products, Special Fasteners, Turkey

MINT – Sales Agents sought for Mexico, Indonesia and Turkey for our UK manufactured Special Fasteners

We are currently seeking Commission-based Sales Agents for our UK manufactured Special Fasteners for the following territories:  Mexico, Indonesia and Turkey.

These countries, along with Nigeria, form the so called MINT group of developing economies.

Hague Fasteners believes these MINT nations, along with other developing economies, will certainly have requirements for custom-made fasteners in the wide range of raw exotic materials that we have in stock for their developing industries.

If you are interested, and are based in one of the countries above, please do not hesitate to contact us and ask for Mike Field.


For more information about Hague Fasteners, please visit our Hague Fasteners website and view in particular our gallery and products pages.  The gallery showcases recently manufactured special fasteners and gives you an idea of the fasteners we can manufacture to OEM and customer drawings.  You may also view our Hague Fasteners sales eBrochure.

British Stainless Steel Association, BSSA, Hague Fasteners, Special Fasteners, Stainless Steel Fasteners

HagueFasteners on board with the British Stainless Steel Association

Hague Fasteners are proud to announce their new association with the British Stainless Steel Association.

Following a response to an online introduction and subsequent contact from the BSSA, Hague Fasteners jumped at the opportunity to join the prestigious association. 
The British Stainless Steel Association (BSSA) exists to promote and develop the manufacture and use of stainless steel across the UK. Based in Sheffield, the Association provides marketing support, technical advice, information, training and education in all aspects of stainless steel.
Hague Fasteners & The BSSA

Originally formed as an association of stainless steel fabricators, the BSSA has steadily increased the scope and range of activities over the years. Its strength lies in the breadth of its membership drawn from companies in all sectors of the industry and at all stages of the supply chain. It is representative of a broad cross-section of UK Industry: from larger multinational companies to smaller, family owned enterprises.
With Hague Fasteners’ massive diversity in the manufacture of Special & Custom Fastener Components, the link up with the BSSA will see Hague further promote British Stainless Steel Fastener Engineering excellence around the World. 
British Fasteners, Custom Bolts & Nuts, EU Manufacturing, Fastener Manufacturers, fastener manufacturing, Made in England, NonChinese Manufacture, Special Fasteners

Non-Chinese Please – We're British

Taking the bus to work or having a relaxing walk amid the rush hour traffic, wherever you are, you will no doubt have a little bit of China on you.

Listening to your iPod – Made in China
Fiddling with your key ring – Made in China 
Dressed to impress – Made in China

Our business has been established since 1971 and in recent years we have seen a massive upturn in requests for Manufactured Special Fasteners of Stainless Steels (and nonferrous materials) where it is stipulated in the supply terms that non Chinese sourced material must be used. 
NonChinese Fasteners


We pride ourselves on the high integrity of all products we manufacture from a complex component made in house to a customers close toleranced drawing, to a standard pin or washer, ground or laser cut in the heart of England. 

We fully appreciate the reasons customers are increasingly asking for manufactured fasteners from EU produced steels and NonChinese machine shops and are proud to advise all of our current and prospective Customers that Hague Fasteners do not get involved with any Chinese or Far Eastern imports.
In a complete turnaround Hague Fasteners are now even supplying British manufactured Bolts, Nuts & Washers into Japan, Malaysia, Thailand and even China, a process we never thought possible when we were losing contracts to these very countries in the 1980s. 

In further support of British engineering Hague Fasteners have proudly completed their first year of Young Apprentice schemes seeing an increase in their Special Fastener Engineering Workforce with investment in youth training and staff development. 

If you have any projects that require small volume, special, high integrity fasteners that cannot be sourced from China or from Chinese origin materials, we would kindly ask that you give Hague Fasteners a try.