Fastener Manufacturers Private Limited started business as a manufacturer of Stainless Steel Screw Thread Inserts in 1964. 

Since then the company has been running its business successfully, ably backed by qualified and experienced technical and management personnel. Being pioneers in this area, the company, by its vast experience over the years, has earned high reputation and enormous goodwill in the field by offering products of highest quality.

The main product of the company is Screw (Wire) Thread Inserts. These inserts, sold under the brand name – NAG FASTMAN, are consumed in large quantities all over India (mostly as original equipment and for salvage repairs as well) are used for improving the quality of internal threads in any material and solving problems of thread failure. 

NAG FASTMAN Screw Thread Inserts are made of 18-8 Stainless Steel and are manufactured for Metric, UNC/UNF, BSW/BSF, BA & BSP thread series.

The company is selling these inserts in bulk quantities along with associated tools for installation.

The company has established itself as the most successful supplier of Stainless Steel Screw Thread Inserts to all kind of sectors including Automobiles, Railways, Electronics, Aerospace, Nuclear Power, Space Research, Defence, Gas Turbine, Textile etc.

The company has been accredited with ISO9001:2008 & TS16949:2009 certification for manufacture of Screw Thread Inserts.

The company is registered as a Micro Scale Industry with DIC with Registered Office at Kolkata and Factories at Kolkata and Lucknow. Branch offices are located in Lucknow and Bangalore.