Tachart Ltd, t/a Bolt & Nut Manufacturing Co. is a precision engineering company that specialises in Fasteners made from high performance, exotic and Superalloys for critical applications.  These include Nickel alloys often referred to as the Inconel, Monel and Hastelloy range of alloys.

Nickel alloys are commonly used for high temperature applications and highly corrosive environments or a combination of the two.

Hexagon bolts, Setscrews, Plugs, Capscrews and Nuts defined to BS, ANSI, ISO, DIN & NFE can be machined to order within 24 hours if required. 

BNM also manufactures machined components and bespoke fasteners in Nickel based Superalloys to engineering drawings.

The most common grades are as follows:

UNS N06600 Alloy 600 Inconel 600
UNS N06601 Alloy 601 Inconel 601
UNS N06625 Alloy 625 Inconel 625
UNS N07718 Alloy 718 Inconel 718
UNS N07718 AMS 5663 (B637 N07718)
UNS N07080 Alloy 80A Nimonic 80A
UNS N10276 Alloy 276 HastelloyC276
UNSN06022 (Alloy C22) Hastelloy C22


BNM holds extensive stocks of the above alloys for the rapid production of machined components required on an urgently basis.

BNM can also perform upgrade heat treatment and chemical and mechanical testing to ASME, API 6A and customer specific material procedures and process specifications.  

Please contact us for a quotation or visit our main website or browse our social media sites for more information.


Inconel & Monel are trademarks of the Special Metals Corporation and Hastelloy is a trademark of Haynes International Incorporated but many equivalent products are available from alternative sources.