Mahajak Autoparts Co.

What Mahajak Autoparts Co. does

Mahajak Autoparts Co., Ltd. is a Thai privately held precision fastener and component manufacturer founded in July 1989 and headquartered in Nong Chok, Bangkok. The company operates as a Tier-N OEM supplier to automotive, motorcycle, agricultural equipment, and electrical equipment manufacturers, with named-but-undisclosed Japanese automakers as a flagship customer cohort. Its product portfolio spans OEM parts (e.g., hexagon head bolts, studs, nuts, gears, rocker arms), standard high-strength bolts (8.8, A325, F10T, S10T), and special construction bolts (anchor, I, J, U), sold under long-term supply contracts.

Mahajak runs a vertically integrated manufacturing stack including Cold Forming (with CNC, via technology transfer from Japan's Shinko Bolt Co., Ltd.), Hot Forging (Press and Hammer Forging, via technology from Japan's Tonan Drop Forging Co., Ltd.), Heat Treatment, Electro-plating/Zinc Plating, Zinc Flake Coating (since 2011), in-house Tooling Design, and digital Quality Assurance testing (Hardness, Roughness, Tensile Strength, Micro-Structure). Production lines were progressively added through the early 1990s.

Commercially, Mahajak generates revenue via quote-based B2B OEM hardware sales, with pricing not publicly disclosed. The company markets itself primarily through its bilingual website (mahajakmap.com), social media channels, and trade certifications. It holds automotive-specific IATF 16949 / ISO 9001, ISO 14001, and BS OHSAS 18001 certifications issued by TUV-NORD and Bureau Veritas International. No public funding, M&A, or ownership disclosures are present in the data.

Name

Mahajak Autoparts Co.

Legal name

Mahajak Autoparts Co.,Ltd.

Website

https://mahajakmap.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

101–250 employees

Short description

Mahajak Autoparts Co. is a Bangkok-based, privately held Thai OEM manufacturer of precision automotive fasteners and components—cold formed, hot forged, heat treated, and electro-plated—serving Japanese automakers and motorcycle, agricultural, electrical, and construction OEMs under IATF 16949-certified processes.

Ownership category

akta.pro rank

Headquarters

HQ city

Nong Chok

HQ country

Thailand

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. OEM Auto Parts Manufacturing: Mahajak Autoparts generates revenue through manufacturing and supplying precision fasteners, bolts, nuts, and components to automotive, motorcycle, agricultural equipment, and electrical product manufacturers. Revenue is generated through long-term OEM supply contracts with major automotive companies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Mahajak Autoparts Co., Ltd. is an OEM manufacturer that produces precision fasteners and components — including upset and hex head bolts, special bolts and nuts, studs, washers, screws, gears, and rocker arms — through in-house cold forming (CNC), hot forging (press and hammer), heat treatment, and zinc electro-plating. It supplies these components to automotive, motorcycle, agricultural, and electrical equipment manufacturers, as well as standard and special high-strength bolts to construction customers.

Product overview

Mahajak Autoparts Co. is a Thai automotive parts manufacturer offering a comprehensive portfolio of products and manufacturing services. The company operates three product lines: OEM products (Automotive Parts, Motorcycle Parts, Agricultural Parts, Electrical Parts) serving as original equipment manufacturer components; Standard products (HEX HEAD BOLT 8.8, HEX HEAD BOLT A325, HIGH STRENGTH BOLTS F10T, TORQUE SHEAR BOLT S10T) for general industrial applications; and Special products (Anchor Bolt, I-BOLT, J-BOLT, U-BOLT) for construction needs. Supporting these products, the company provides manufacturing services including Cold Forming (CNC-based), Hot Forging, Heat Treatment, Electro-plating/Zinc Plating, Tooling Design, and Quality Assurance. Established in 1989, the company serves global automotive manufacturers and operates under IATF 16949 and ISO 9001 certifications.

Differentiator

Problem solved

Functional benefit

Products and services

• OEM Automotive Parts OEM fasteners and components for automotive manufacturers, including Upset Hexagon Head Bolt, Hexagon Head Bolt, Special Bolt and Nut, Oil Signal, Oil Filter, Stud Cylinder Head, Stud, Nut Flywheel, Nut Cylinder Head, Washer, Screw, Gear, Rocker Arm, and various door handle, wheel, and suspension parts.
• OEM Motorcycle Parts OEM fasteners and components for motorcycle manufacturers, including Stud Bolt, Flange Bolt, Special Bolt and Nut, Axle Front Wheel, Axle Rear Wheel, Machine Screw, Shaft Swing Arm, Shaft Oil Pump, and related wheel parts.
• OEM Agricultural Parts OEM fasteners and components for agricultural equipment manufacturers, including Upset Hexagon Head Bolt, Hexagon Head Bolt, Special Bolt and Nut, Oil Signal, Oil Filter, Stud Cylinder Head, Stud, Nut Flywheel, Nut Cylinder Head, Washer, Screw, Gear, Rocker Arm.
• OEM Electrical Parts OEM fasteners and components for electrical equipment manufacturers, including Flange Bolt, Upset Hexagon Head Bolt, Weld Bolt, Stud Bolt, Buffer Bolt, Stator Bolt, Cylinder Bolt, Connecting Rod Bolt, Hexagon Flange Nut, Nut Protective Cover, Weld Stud, Machine Screw, Plain Washer, Spring Washer, Screw Full Load.
• HEX HEAD BOLT 8.8 (Standard) Standard hex head bolt with 8.8 grade specifications, precision forged for automotive applications including steering parts such as handle boss, using hot forming and cold forging processes.
• HEX HEAD BOLT A325 (Standard) High-strength hex head bolt meeting A325 specifications for structural and automotive applications.
• HIGH STRENGTH BOLTS F10T (Standard) High tensile strength bolts rated F10T for demanding automotive and construction applications.
• TORQUE SHEAR BOLT S10T (Standard) Torque shear bolt S10T developed using technology transferred from Shinko Bolt Co., Ltd., featuring controlled torque-to-failure characteristics for safety-critical applications.
• Anchor Bolt (Special) Special anchor bolt designed for construction applications.
• I-BOLT (Special) I-shaped special bolt for construction and industrial applications.
• J-BOLT (Special) J-shaped special bolt for construction and industrial applications.
• U-BOLT (Special) U-shaped special bolt for construction and industrial applications, produced on a dedicated U-bolt production line started in September 1991.
• Cold Forming Manufacturing Service In-house cold forming service implementing Computer Numeric Control (CNC) for utmost accuracy and precision. Technology transferred from Shinko Bolt Co., Ltd., Japan, for production of S10T Torque Shear Bolts and other precision-formed components.
• Hot Forging Manufacturing Service Hot forging service using Press Forging and Hammer Forging Systems to ensure higher quality parts. Technology transferred from Tonan Drop Forging Co., Ltd., a famous Japanese auto parts manufacturer.
• Heat Treatment Manufacturing Service In-house heat treatment service for fasteners and forged parts, certified ISO/TS 16949:2009 by TUV-NORD and adapted to automotive industry standards (IATF, ANFIA, CCFA, FIEV, SMMT, VDA, QMC).
• Electro-plating and Zinc Plating Manufacturing Service In-house electro-plating and zinc plating service, including zinc flake coating, committed to sustaining ISO/TS 16949:2009 and ISO 9001:2008 standards.
• Tooling Design Manufacturing Service In-house tooling design service for manufacturing dies and molds used in cold forming and hot forging processes.
• Quality Assurance Manufacturing Service Total quality management service with digital measuring equipment including Hardness Tester, Roughness Tester, Tensile Strength Tester, and Micro-Structure analysis, ensuring product quality from preliminary works through final process.

Quantifiable outcome

• ISO 9002 certification achieved on April 5, 2000 and October 13, 2000 for both Mahajak Autoparts Co.,Ltd. and Mahajak Industry Co.,Ltd.

Named customers1 record

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Shinko Bolt Co., Ltd.coreTechnology or IntegrationJapanese technology transfer partnership for cold forming technology. Shinko Bolt Co., Ltd. transferred CNC technology and expertise to enable Mahajak to produce S10T Torque Shear Bolts with modern technical capabilities.
• Tonan Drop Forging Co., Ltd.coreTechnology or IntegrationJapanese technology transfer partnership for hot forging. Tonan Drop Forging Co., Ltd., a famous Japanese auto parts manufacturer, enabled technology transfer for Press Forging and Hammer Forging Systems to ensure higher quality forged products.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Illinois Tool Works (ITW): US-based diversified industrial manufacturer with significant automotive fastener and components operations through ITW Automotive. A much larger competitor to Mahajak in fasteners globally, with a broader product portfolio but overlapping customer base in automotive OEM supply chains.

Direct peers

• Nifco Inc. Japanese manufacturer of plastic fasteners, clips, and industrial components serving automotive and consumer product OEMs globally. Comparable to Mahajak in Japanese OEM customer base, B2B OEM supply model, and Asia-based manufacturing operations (via Nifco's Thai subsidiaries).
• Bulten AB: Swedish automotive fastener manufacturer supplying bolts, nuts, and engineered fasteners to OEMs and Tier-1s across Europe, Asia, and the Americas. Highly comparable to Mahajak in product category (precision fasteners for automotive OEMs), business model (B2B OEM supply), and customer base (global automotive).
• Kamax Group: German manufacturer of high-strength fasteners and precision components for automotive, commercial vehicle, and industrial applications. Comparable to Mahajak in product category (precision cold-formed fasteners), customer base (automotive OEMs), and quality positioning (supplier to premium OEMs).
• Fontana Gruppo: Italian family-owned manufacturer of fasteners and turned parts for automotive, motorcycle, and industrial customers. Comparable to Mahajak in product category (precision fasteners), manufacturing processes (cold forming), and privately-held operating model.
• Sundaram Fasteners: India-based manufacturer of high-tensile fasteners, cold-formed parts, and hot-forged components serving automotive, agricultural, and industrial OEMs. Closely comparable to Mahajak in geographic positioning (Asian low-cost producer), technology base (cold forming, hot forging), and customer verticals (automotive, motorcycle, agricultural).
• LISI Group: French global manufacturer of fasteners and assembly solutions for aerospace, automotive, and industrial markets. Comparable to Mahajak in product category (precision fasteners), manufacturing processes (cold forming, hot forging), and B2B OEM supply model.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mahajak-autoparts

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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 Mahajak Autoparts Co.