Greystone

What Greystone does

Greystone is a privately held precision machining and electroplating manufacturer founded in 1932 in North Providence, Rhode Island. The company operates five global facilities across the United States (Lincoln, RI; North Providence, RI; Toano, VA), Poland, and China, and employs approximately 500 people worldwide. Greystone produces over 300 million parts annually, including 130 million automotive parts per year in North America at a 4 PPM defect rate, serving safety-critical applications in automotive, aerospace, defense, medical, hydraulics, and semiconductor industries.

The company's core capabilities are anchored on high-volume precision machining using 42 Hydromat rotary transfer machines, 33 multi-spindle machines (Index, Schutte, Tornos, ACME), and 18 single-spindle machines, combined with comprehensive electroplating services (hard chrome, thin dense chrome, electroless nickel, zinc, zinc nickel, zinc phosphate, sulfamate nickel, manganese phosphate) and Type II and Type III anodizing. Three proprietary technologies differentiate the offering: the Precision Plating System (PPS) for automated selective high-volume plating with Cpk >2 tolerances and up to 70% chemical waste reduction; Infinity stainless steel coating delivering over 4,000 hours of salt spray resistance; and SteriChrome medical plating. Greystone manufactures over 90% of its tooling in-house and designs custom automated inspection equipment for 100% inspection of safety-critical components.

The business model is enterprise contract manufacturing with custom quote-based pricing. Revenue is generated on a per-part or per-batch basis for programs typically ranging from 100,000 to 30,000,000 parts annually, with multi-year contracts on safety-critical Tier 1 OEM programs. Go-to-market is direct enterprise field sales supported by a toll-free line and online quote request form, with content marketing via the company website. Named enterprise customers include automotive OEMs and Tier 1 suppliers (Denso, Continental, Bosch, BorgWarner, GM, Ford), aerospace (Boeing), and medical device OEMs (Medtronic). Vertical integration of machining and plating under IATF 16949, NADCAP, ISO 13485, ISO 9001, ISO 14001, ITAR, and FAA Repair Station certifications is the structural source of switching cost on long-cycle safety-critical programs.

Name

Greystone

Legal name

Induplate, LLC

Website

https://greyst.com

Company type

Private

Founded year

1932

Operating status

Operating

Headcount range

251–500 employees

Short description

Greystone is a privately held, vertically integrated precision machining and electroplating manufacturer operating five global facilities and producing 300 million parts annually for automotive, aerospace, defense, and medical Tier 1 OEMs.

Ownership category

akta.pro rank

Product category

Contract Manufacturing - Precision Machining & Plating

NAICS

Electroplating, Plating, Polishing, Anodizing, and Coloring (332813), Precision Turned Product Manufacturing (332721)

SIC

Metalworkg Machinery & Equipment (3540), Special Industry Machinery, Nec (3559)

akta.pro primary industry

Metal Forming & Fabrication Machines (Presses, Bending, Shearing, Stamping) (IMAHADAC)

Keywords

• Precision machining services
• Electroplating services
• High volume manufacturing
• Metal surface finishing
• Anodizing services

Headquarters

HQ city

Lincoln

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Machining Services: High-volume CNC machining services including rotary transfer, multi-spindle, and single-spindle operations. Revenue is generated through per-part pricing for production runs typically ranging from 100,000 to 30,000,000 parts annually.
2. Electroplating & Anodizing Services: Surface finishing services including hard chrome, thin dense chrome, electroless nickel, zinc, zinc nickel, zinc phosphate, and anodizing. Revenue is generated through per-part or per-batch pricing based on plating specifications and volume.
3. Secondary Operations: Additional services including deburring, grinding, heat treatment, assembly, and inspection. These are bundled with primary services or charged as add-on services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Greystone is a vertically integrated precision machining and electroplating manufacturer serving high-volume, safety-critical applications. It produces complex machined components using 42 Hydromat rotary transfer machines, 33 multi-spindle machines, and 18 single-spindle CNC machines, and applies wear- and corrosion-resistant surface finishes including hard chrome, thin dense chrome, electroless nickel, zinc, zinc nickel, anodizing (Type II and III), and proprietary coatings (Precision Plating System, Infinity, SteriChrome). Production volumes typically range from 100,000 to 30 million parts per year per program.

Product overview

Greystone is a precision, high-volume machining and surface finishing provider operating as a vertically integrated manufacturer. The company offers core services across three main categories: (1) Precision Machining using rotary transfer (Hydromat), multi-spindle, and single-spindle CNC machines producing automotive, defense, and industrial components; (2) Electroplating services including hard chrome, thin dense chrome, electroless nickel (high/medium/low phosphorus), zinc, zinc nickel, zinc phosphate, sulfamate nickel, and manganese phosphate coatings; and (3) Type II and Type III hardcoat anodizing for aluminum alloys. The portfolio includes proprietary technologies such as the Precision Plating System (PPS) for selective high-volume plating, Infinity for stainless steel corrosion protection, and SteriChrome for medical device plating. Engineering services encompass automated equipment design, custom tooling fabrication, 100% automated inspection, and comprehensive quality management. Greystone serves safety-critical applications in automotive (130 million parts annually), aerospace, defense, medical, hydraulics, and semiconductor industries across five global facilities.

Differentiator

Problem solved

Functional benefit

Brands

• Precision Plating System (PPS): Proprietary state-of-the-art eco-friendly plating and anodizing technology that allows engineers to customize plating deposits to meet specific application requirements, plating multiple areas to exact thickness within tight tolerances with automated processing.
• SteriChrome
• SteriChrome (Medical)
• Infinity

Products and services

• Rotary Transfer Machining

Quantifiable outcome

• 4 PPM defect rate achieved across operations
• +6 more outcomes

Named customers8 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators10 records

Recent moves10 records

Expansion highlights6 records

Direct peers

• Pioneer Metal Finishing: One of the largest independent metal finishing companies in North America, offering electroplating, anodizing, and surface treatments to automotive, aerospace, and industrial OEMs. Directly comparable to Greystone as a high-volume contract plating provider serving similar Tier-1 customer profiles.
• Valence Surface Technologies: Aerospace-focused plating, anodizing, and surface treatment provider with NADCAP-accredited facilities. Comparable to Greystone's aerospace plating business in customer mix (Boeing-tier OEMs), regulatory posture, and high-mix finishing capabilities.
• Techmetals: Precision metal finishing company offering hard chrome, electroless nickel, anodizing and specialty coatings for aerospace, defense, and industrial customers. Comparable service portfolio and safety-critical customer base to Greystone's plating operations.
• Anoplate Corporation: Metal finishing and electroplating services provider with capabilities in chrome, nickel, zinc, and anodizing. Directly comparable to Greystone's plating and anodizing lines with similar mid-to-high volume contract manufacturing positioning.
• Hohman Plating & Manufacturing: Plating and metal finishing services company serving aerospace, defense, automotive, and industrial markets with hard chrome, electroless nickel, and zinc-nickel capabilities. Comparable to Greystone's plating portfolio and customer verticals.
• Master Finish Company: High-volume plating and finishing services provider with automotive industry focus, offering rack and barrel zinc, zinc-nickel, and chrome plating. Directly comparable to Greystone's high-volume automotive plating programs and customer mix.
• SIFCO Industries: Public precision components manufacturer with aerospace, defense, and industrial exposure offering plating and surface treatment capabilities. Comparable to Greystone's vertically integrated precision machining and plating model serving safety-critical aerospace and defense customers.

Broad incumbents

• Martinrea International: Canadian publicly-traded Tier-1 automotive supplier of lightweight structures, propulsion, and chassis components for global OEMs. Comparable to Greystone's automotive contract manufacturing profile but at much larger scale and broader scope.
• Linamar Corporation: Canadian publicly-traded diversified manufacturer of precision metallic components, modules and systems serving automotive and industrial markets globally. Comparable high-volume precision machining model to Greystone's rotary transfer operations but at substantially larger scale.
• LISI Group: French publicly-traded precision components manufacturer producing fasteners, mechanical components, and surface-treated parts for aerospace, automotive, and industrial markets. Comparable precision machining and plating offerings to Greystone with similar multi-vertical customer strategy.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries5 records

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 Greystone