What Deepak Fasteners does

Deepak Fasteners Limited, founded in 1958 by Kailash Chandra Kalra in Ludhiana, India, is a family-owned industrial fastener manufacturer that the company describes as the largest of its kind in India. Its core portfolio spans 11 product categories — socket screws (M1.6 to M64), pins, wrenches and tools, Durlok® self-locking fasteners, hex bolts and screws, hex nuts, washers, structural assemblies, stainless steel fasteners (grades A2-70/80 and A4-70/80), petrochemical studbolts (ASTM A193/A320 grades B7, B7M, B8, B8M, B16, L7, L7M), and a specials line of custom fasteners. Manufacturing is vertically integrated with in-house specialized coatings including Hot Dip Galvanizing, Mechanical Galvanizing, Zinc and Zinc-Nickel Electroplating, PTFE, Geomet® (zinc-aluminum flake, via Noflon), Delta Dorken®, and the proprietary Unbrako Wiscoat system; quality is anchored by a NABL ISO/IEC 17025 accredited laboratory and ISO 9001, IATF 16949, ISO 14001, ISO 45001, CE, and RDSO certifications.

The company earns revenue through one-time/perpetual sales of manufactured fasteners priced on a quote basis (with downloadable price lists for authorized distributors), distributed via direct enterprise field sales through six Indian regional offices (Ludhiana HO, Chennai, Mumbai, Pune, Ahmedabad, Kolkata) and an authorized distributor network, plus wholly-owned international subsidiaries in Birmingham (UK), Downey (USA), and Shannon (Ireland). End-markets span oil and gas/petrochemical, aerospace, automotive, construction and infrastructure, military and defence, railways (RDSO-approved), power generation, heavy machinery, truck and off-highway, and general civil engineering; reference projects include Delhi Metro, Indira Gandhi International Airport, Bandra-Worli Sea Link, London Heathrow Terminal 5, Melbourne AAMI Park, and Torre Caja Tower in Spain.

Since 2005 the company has pursued an explicit brand-acquisition strategy, beginning with an SPS Technologies agreement to manufacture Unbrako in India (2005), followed by the landmark 2008 acquisition of the Unbrako®, Durlok®, and Sel-lok® brands along with the Shannon (Ireland) manufacturing unit and Melbourne (Australia) warehouse — making Deepak the worldwide owner of the Unbrako brand (established 1911). Capacity has scaled through five Indian manufacturing plants (Ludhiana x2, Doraha, Tahliwal/Una, Bhopal — the last a $100 million 2012 investment) and three overseas facilities. Capital structure remains family-controlled through the Kalra family, augmented by $15M from BanyanTree Finance in 2010 and $48M from Capri Xponentia Managers in 2022, the latter being the first disclosed institutional private equity round.

Name

Deepak Fasteners

Legal name

Deepak Fasteners Limited

Website

https://deepakfasteners.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

251–500 employees

Short description

Deepak Fasteners is India's largest industrial fastener manufacturer, producing socket screws, bolts, nuts, washers, and structural fasteners across five plants. Family-owned since 1958, it owns the Unbrako brand and serves oil and gas, automotive, aerospace, and infrastructure customers globally.

Ownership category

akta.pro rank

Product category

Industrial Fasteners Manufacturing

NAICS

Bolt, Nut, Screw, Rivet, and Washer Manufacturing (332722), Precision Turned Product Manufacturing (332721)

SIC

Bolts, Nuts, Screws, Rivets & Washers (3452), Cutlery, Handtools & General Hardware (3420)

akta.pro primary industry

Fasteners, Anchors & Connectors (Bolts, Weld Studs, Plates) (IMADACAJ)

Keywords

• Industrial fastener manufacturing
• Socket head screws
• Structural bolt assemblies
• Petrochemical stud bolts
• Specialized fastener coatings

Headquarters

HQ city

Ludhiana

HQ country

India

HQ region

Asia

Offices13 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Personnel, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Industrial Fastener Sales: Deepak Fasteners manufactures and sells industrial fasteners including socket screws, bolts, nuts, washers, pins, structural assemblies, stainless steel fasteners, and petrochemical studbolts. Products are sold to diverse industrial sectors globally through direct sales teams and authorized distributors.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels3 records

Core offering

Deepak Fasteners Limited manufactures and supplies industrial fasteners including socket head screws, hex bolts and nuts, washers, pins, structural bolt assemblies, stainless steel fasteners, petrochemical studbolts, and Durlok® self-locking fasteners under the Unbrako brand. The company also offers specialized protective coatings (Hot Dip Galvanizing, Mechanical Galvanizing, Zinc/Zinc-Nickel Electroplating, Geomet, Delta Dorken, PTFE, Unbrako Wiscoat) and custom-engineered 'Specials' for industrial customers.

Product overview

Deepak Fasteners Limited is the Largest Industrial Fasteners Manufacturer in India and worldwide owner of the Unbrako brand. The company offers a comprehensive portfolio of industrial fasteners organized across 11 core product categories: Socket Screws, Pins, Wrenches & Tools, Durlok® (self-locking fasteners), Hex Bolts/Screws, Hex Nuts, Washers, Structural Assemblies, Stainless Steel Fasteners, Petrochemical Studbolts, and Specials (custom fasteners). The company also provides specialized in-house surface coating services including Hot Dip Galvanizing, Mechanical Galvanizing, Zinc Electroplating, PTFE, Geomet, Delta Dorken, and Unbrako Wiscoat. The portfolio includes both metric and inch-sized products meeting international standards (DIN, ISO, ASTM, IS, BS). The company operates 5 manufacturing plants in India and serves global markets through subsidiaries in the UK, USA, and Ireland.

Differentiator

Problem solved

Functional benefit

Brands

• Unbrako: World-renowned premium industrial fastener brand acquired from SPS Technologies in 2008. Unbrako is the world leader in advancing the technology of bolted joints and is known for stronger and better performing fasteners.

Products and services

• Socket Screws High-tensile socket head cap screws sold under the Unbrako brand, used in heavy industrial, automotive, and engineering applications requiring high-strength threaded fastening.
• Pins Industrial pins supplied to OEMs and engineering customers for use in mechanical assemblies and fastening applications.
• Wrenches & Tools Hand tools and wrenches marketed alongside the company's industrial fasteners to enable proper installation.
• Durlok® Self-Locking Fasteners Proprietary self-locking fastener system designed to resist vibration loosening, sold to industrial customers needing secure, maintenance-free threaded joints.
• Hex Bolts and Screws Standard and high-tensile hex head bolts and screws for construction, infrastructure, and general industrial fastening applications.
• Hex Nuts Standard hex nuts supplied to industrial customers for use in combination with bolts and studs.
• Washers Flat and locking washers used as load-distributing or anti-loosening components in industrial bolted joints.
• Structural Assemblies Pre-engineered structural bolt assemblies supplied to construction, infrastructure, and heavy engineering customers for large bolted connections.
• Stainless Steel Fasteners Stainless steel variants of the company's fastener range, targeted at applications requiring corrosion resistance such as chemical, marine, and food processing environments.
• Petrochemical Studbolts High-strength studbolts engineered for flanged connections in oil and gas, petrochemical, and refinery process piping, typically supplied with matched nuts.
• Specials (Custom Engineered Fasteners) Custom-designed and manufactured fasteners built to specific drawings or performance requirements for industrial OEMs and engineering projects.
• Specialized Coatings In-house application of protective and anti-corrosion coatings including Hot Dip Galvanizing, Mechanical Galvanizing, Zinc and Zinc-Nickel Electroplating, Geomet, Delta Dorken, PTFE, and Unbrako Wiscoat, sold to customers requiring finished coated fasteners.

Quantifiable outcome

• 50-70 years corrosion protection in atmospheric environments with Hot Dip Galvanizing
• +2 more outcomes

Named customers6 records

Segments21 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• SPS TechnologiescoreOEM/ Whitelabel/ Licensing Partner · 1 January 2005In 2005, Deepak Fasteners signed an agreement with SPS Technologies to manufacture and market Unbrako products in the Indian subcontinent. This was followed by a landmark acquisition in 2008 where Deepak Fasteners acquired the Unbrako®, Durlok®, and Sel-lok® brands from SPS Technologies along with the Shannon (Ireland) manufacturing unit and Melbourne (Australia) warehouse. This acquisition was historic as it marked an Indian firm buying out a well-established American fastener brand.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Sundram Fasteners: India's largest listed industrial fastener manufacturer, part of the TVS Group. Direct competitor across automotive, structural, and high-tensile fastener categories, with comparable customer overlap in India and export markets.
• Bossard Group: Swiss-headquartered global leader in fastening technology with a strong product portfolio in high-tensile screws, Durlok-style self-locking fasteners, and engineered fastening solutions — directly comparable to Unbrako/Durlok in critical applications.
• Kamax: German specialist in high-tensile fasteners serving automotive and industrial markets globally. Closely comparable on high-strength, precision cold-formed fasteners and presence in Tier-1 OEM supply chains.
• LISI Group: French global fastener manufacturer with aerospace, automotive, and industrial divisions. Comparable product breadth and end-market diversification, especially in aerospace and high-spec fastener categories.
• Penn Engineering: U.S.-based leader in self-clinching and specialty fasteners, serving electronics, automotive, and industrial OEMs. Directly comparable in self-locking/anti-vibration fastening technology overlap with Durlok.
• Nifco: Japanese plastic and metal fastener manufacturer primarily serving automotive OEMs globally. Comparable in precision fastener technology and Tier-1 automotive customer base, though with a stronger plastics focus.

Broad incumbents

• Illinois Tool Works (ITW): Large U.S. diversified industrial conglomerate with significant fastener and components segments serving automotive, construction, and industrial markets. A broad incumbent whose fasteners division overlaps Deepak's structural and high-tensile products.
• Würth Group: German global market leader in fastening and assembly materials, combining manufacturing with a massive distribution network. Comparable end-market exposure in construction, automotive, and metalworking with broader product breadth.
• Stanley Black & Decker: Global tool and industrial fastener company with overlap in wrenches/hex drivers and engineered fastening systems for construction and industrial users. Broader portfolio, but direct overlap in tools and fastening solutions.

Regional players

• Bulten: Swedish fastener manufacturer with a strong focus on automotive and Tier-1 OEM supply in Europe. Comparable in high-tensile, surface-treated fasteners for the automotive industry, with a regional (European) focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries3 records

Funding overview

Funding rounds3 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Deepak Fasteners