Smalley

What Smalley does

Smalley is a privately held precision manufacturer specializing in retaining rings and wave springs, founded over 100 years ago and headquartered in Lake Zurich, Illinois. The company operates five manufacturing facilities across the United States, France, Sweden, China, and India, supported by a global network of manufacturer representatives and regional distributors covering more than 20 countries. Its product portfolio centers on two families — retaining rings (Spirolox, Constant Section Snap Rings, Hoopster, WaveRing, Self-Locking Rings/Revolox, Tapered Section Circlips, Laminar Seal Rings) and wave springs (Crest-to-Crest, Single-Turn, Nestawave, Wavo, Linear, Interlaced, Marcel) — totaling more than 11,000 standard catalog parts plus custom-engineered solutions in exotic alloys.

The core technical differentiator is Smalley's proprietary edgewinding process, in which flat wire is coiled on edge rather than stamped, producing circular-grain metallurgy with superior strength and fatigue life and zero material waste. An in-house rolling mill processes round wire into flat wire, providing end-to-end control over raw material. The No-Tooling-Cost™ manufacturing model allows custom prototyping and production in any diameter from 3mm to 3,000mm without tooling charges or minimum order quantities. Spirolox rings are groove-interchangeable with conventional stamped circlips but eliminate protruding 'ears' that interfere with adjacent assemblies, and the 1958 self-locking ring technology (Tab and Slot, Dome and Slot/Revolox) supports high-RPM applications.

Smalley's go-to-market combines direct enterprise field sales, a global channel partner network, and a US e-commerce web store for standard parts, with engineering consultation, free samples, and CAD model downloads integrated into the sales process. The company serves automotive, aerospace, oil & gas, industrial, medical, wind power, consumer, off-highway, and e-mobility OEMs, with primary verticals being automotive, aerospace, oil & gas, and industrial. Pricing is quote-based for custom parts and unit-priced for catalog standards. Notable commercial signals include supplying over 70% of Fortune 500 manufacturers, 13 consecutive years of GM Supplier Quality Excellence Awards (2012-2024), and quality certifications including ISO 13485, ISO 9001, IATF 16949, AS9100, ISO 14001, and ITAR registration. Revenue is not publicly disclosed.

Name

Smalley

Legal name

Smalley Steel Ring Corporation

Website

https://smalley.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

251–500 employees

Short description

Smalley is a precision manufacturer of retaining rings and wave springs, serving automotive, aerospace, oil & gas, industrial, medical, and e-mobility OEMs globally through proprietary edgewinding technology, an 11,000+ SKU standard catalog, and custom-engineered solutions in exotic alloys.

Ownership category

akta.pro rank

Product category

Precision Retaining Rings and Wave Springs

NAICS

Turned Product and Screw, Nut, and Bolt Manufacturing (33272), Bolt, Nut, Screw, Rivet, and Washer Manufacturing (332722)

SIC

Screw Machine Products (3451), Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Special Industry Machinery (No Metalworking Machinery) (3550)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industry

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

Keywords

• Precision retaining rings
• Wave springs
• Edgewound components
• Spiral retaining rings
• Custom spring manufacturing

Headquarters

HQ city

Lake Zurich

HQ country

United States

HQ region

North America

Offices8 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Standard Retaining Rings and Wave Springs: Smalley stocks over 11,000 standard parts in carbon and stainless steel, available for same-day shipping and next-day delivery. Sold via e-commerce store for US customers and through global distributor/representative network.
2. Custom Retaining Rings and Wave Springs: Custom design solutions in exotic alloys or customer-specified dimensions, produced using the No-Tooling-Cost edgewinding process. Short lead times with no minimum quantity required for custom parts.
3. Engineering Design Services: Smalley engineers provide design consultations to ensure applications contain the most cost-effective and appropriate solution. Services include free samples on standard parts and technical support across the product lifecycle.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels9 records

Core offering

Smalley manufactures precision retaining rings and wave springs using a proprietary edgewinding (edge-wound coil forming) process backed by an in-house rolling mill. The company sells 11,000+ standard catalog parts in carbon and stainless steel plus fully custom-engineered rings and springs in exotic alloys, with no tooling charges and no minimum order quantities. Target customers are OEMs and Tier suppliers across automotive, aerospace, oil and gas, industrial, medical, wind power, consumer, off-highway, and e-mobility sectors.

Product overview

Smalley is a precision manufacturer specializing in retaining rings and wave springs, offering over 11,000 standard parts across multiple product lines. The portfolio centers on two core product families: (1) Retaining Rings including Spirolox Retaining Rings, Constant Section Snap Rings, WaveRing, Hoopster, Laminar Seal Rings, Self-Locking Rings (Revolox), and Tapered Section Circlips; and (2) Wave Springs encompassing Crest-to-Crest, Single-Turn, Nestawave, Wavo, Nested, Linear, Interlaced, and Marcel types. All products are manufactured using Smalley's proprietary edgewinding technology that coils flat wire on edge, delivering superior strength and fatigue life compared to conventional stamped components. The company serves automotive, aerospace, oil & gas, medical, industrial, windpower, consumer, and off-highway sectors with both catalog standard parts and custom-engineered solutions using a No-Tooling-Cost manufacturing process.

Differentiator

Problem solved

Functional benefit

Brands

• Spirolox: A division of Smalley specializing in spiral retaining rings with 'No Ears to Interfere' design, including self-locking ring technology invented in 1958
• Spirawave
• Revolox
• Hoopster
• WaveRing
• Wavo

Products and services

• Spirolox Retaining Rings Spiral retaining rings edgewound from flat wire with the trademarked 'No Ears To Interfere' design; available in internal and external configurations and groove-interchangeable with stamped circlips. Sold to OEM design engineers across automotive, aerospace, industrial, medical, and other performance-critical sectors.
• Constant Section Snap Rings Retaining rings manufactured from flat wire stock with a constant cross-section, suitable for a wide range of industrial fastening applications. Sold to OEMs needing reliable, repeatable snap-ring retention.
• WaveRing Wave-shaped retaining rings that combine wave spring compliance with retaining ring functionality, used where controlled radial force and axial retention are both required.
• Hoopster Retaining Rings Heavy-duty retaining rings designed for demanding applications requiring high thrust loads, particularly for external retaining use.
• Laminar Seal Rings Retaining rings that provide sealing functionality in addition to component retention, used in sealing-critical assemblies.
• Self-Locking Rings (Revolox) Self-locking retaining rings in Tab-and-Slot and Dome-and-Slot (Revolox®) configurations that increase rotational capacity for high-RPM applications in electric motors, gearboxes, and automotive transmissions.
• Tapered Section Circlips Retaining rings with a tapered radial wall for axial installation into bore or shaft grooves, designed for high thrust loads and heavy-duty applications.
• Crest-to-Crest Wave Springs Multi-turn wave springs with sinusoidal waves that can reduce spring free height by up to 50% compared to coil springs; available in standard and nested configurations. Used where space is constrained and predictable force/deflection is required.
• Single-Turn Wave Springs Wave springs with a single turn, designed for applications requiring compact load and deflection characteristics.
• Nestawave Nested Wave Springs Nested wave springs that produce two to three times more force than single-turn springs, ideal for bearing preload and applications requiring higher loads in a compact form factor.
• Wavo Wave Springs Wave springs designed for specific performance characteristics in a compact form factor.
• Linear Springs Springs that provide linear force and deflection along a linear path, for applications needing linear rather than radial spring behavior.
• Interlaced Wave Springs Wave springs with an interlaced configuration for specific load and deflection requirements not met by single-turn or nested designs.
• Marcel Expanders Spring-like expanders used in applications requiring radial expansion force.
• Circular-Grain Shims Precision shims manufactured using Smalley's edgewound circular-grain metallurgy process.
• Custom Retaining Rings and Wave Springs Bespoke design and manufacturing services for retaining rings and wave springs in exotic alloys and customer-specified dimensions, produced via the No-Tooling-Cost edgewinding process with no minimum order quantity and short lead times. Includes complimentary engineering design consultation.

Quantifiable outcome

• Up to 50% space reduction compared to traditional coil springs
• +4 more outcomes

Named customers4 records

Segments9 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

13 partnerships are on record, tiered core.

• Mark Techpro & Consultants Pvt LtdcoreChannel Partner/ Reseller/ Distributor · 1 January 2017Mark Techpro & Consultants Pvt Ltd has served as Smalley's authorized manufacturer's representative in India since 2017, supporting customers across multiple performance-critical sectors including automotive, aerospace, oil & gas, and industrial applications.
• RotoPrecisioncoreChannel Partner/ Reseller/ DistributorRotoPrecision serves as Smalley's authorized distributor in Canada, providing local sales and support for Smalley retaining rings and wave springs.
• TitanoxcoreChannel Partner/ Reseller/ DistributorTitanox serves as Smalley's authorized distributor in France, supporting local customers with precision retaining rings and wave springs.
• PattonaircoreChannel Partner/ Reseller/ DistributorPattonair serves as Smalley's authorized distributor in France, providing aerospace and industrial customers with Smalley products.
• AFC EuropecoreChannel Partner/ Reseller/ DistributorAFC Europe serves as Smalley's authorized distributor in Germany and the United Kingdom, providing local sales and customer support.
• Gandini SPAcoreChannel Partner/ Reseller/ DistributorGandini SPA serves as Smalley's authorized distributor in Italy, supplying Italian manufacturers with Smalley precision components.
• Amatec Technische Veren B.V.coreChannel Partner/ Reseller/ DistributorAmatec Technische Veren B.V. serves as Smalley's authorized distributor in the Netherlands, providing local sales and technical support.
• Tianjin StarPointcoreChannel Partner/ Reseller/ DistributorTianjin StarPoint serves as Smalley's authorized distributor in China (alongside Smalley China's direct operations), supporting local customers with Smalley products.
• Kimura Corp.coreChannel Partner/ Reseller/ DistributorKimura Corp. serves as Smalley's authorized distributor in Japan, providing local sales and support for Smalley products.
• Spring MingcoreChannel Partner/ Reseller/ DistributorSpring Ming serves as Smalley's authorized distributor in Taiwan, supplying Taiwanese manufacturers with Smalley precision retaining rings and wave springs.
• Exim & MFR EnterprisecoreChannel Partner/ Reseller/ DistributorExim & MFR Enterprise serves as Smalley's authorized distributor in Singapore, supporting Southeast Asian customers.
• Smalley Korea Manufacture RepresentativecoreChannel Partner/ Reseller/ DistributorSmalley has a manufacturer representative covering the Korean market to support local customers with sales and technical support.
• Smalley Central and South America Manufacture RepresentativecoreChannel Partner/ Reseller/ DistributorSmalley has a manufacturer representative covering Central and South America, providing sales and support for the Latin American market.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Rotor Clip Company: Rotor Clip is a US-based manufacturer of retaining rings, snap rings, and wave springs, directly competing with Smalley in both standard catalog and custom products. It is one of the closest direct peers in the North American market for spiral and constant-section rings.
• Anderton International: Anderton is a UK-based precision manufacturer of retaining rings, circlips, and wave springs with a comparable product range and customer base. It is a direct peer in the European market, serving similar aerospace, automotive, and industrial applications as Smalley.
• Circlips of Europe: Circlips of Europe supplies a broad range of circlips, retaining rings, and wave springs to industrial customers. It directly overlaps Smalley's product categories with comparable European-market reach across automotive and general industrial customers.
• Lee Spring: Lee Spring is a global manufacturer of stock and custom springs, including wave springs, compression springs, and torsion springs. It is a direct peer in the wave spring category where Smalley's Crest-to-Crest and Nestawave lines compete.
• Century Spring: Century Spring manufactures stock and custom springs including wave springs, compression, extension, and torsion springs for industrial and aerospace markets. It competes with Smalley in the wave spring product category across similar B2B customers.

Broad incumbents

• Würth Industrie: Würth Industrie is a large global fastener and C-parts supplier with a broad portfolio that includes retaining rings and related fastening components. It overlaps Smalley as a broad incumbent serving many of the same industrial customers with a much wider product range.
• Bossard Group: Bossard is a Swiss-headquartered global fastening solutions provider covering screws, nuts, retaining rings, and engineered fasteners. It serves the same industrial OEM customer base as Smalley but as part of a broader fastening portfolio rather than a rings/springs specialist.
• NHK Spring Co., Ltd. NHK Spring is a large Japanese spring and precision components manufacturer serving automotive, electronics, and industrial markets globally. It is a broad incumbent whose automotive suspension and seat spring businesses overlap with adjacent applications where Smalley supplies wave springs.
• Tsubaki Group: Tsubaki is a Japanese-headquartered global manufacturer of power transmission and motion control products including chains, sprockets, and related components. It is a broad incumbent whose motion-control portfolio intersects with Smalley's customer base in automotive, industrial, and aerospace applications.

Regional players

• TFC (Tien-Feng Fasteners): TFC is a Taiwan-based manufacturer of precision fasteners and related components serving Asian markets. It is a regional player overlapping with Smalley's wave spring and retaining ring lines at competitive price points across Asia-Pacific industrial customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/user/SmalleySteelRing
• Facebookfacebook.com/smalleysteelring
• LinkedInlinkedin.com/company/smalley-steel-ring-co
• Xx.com/ringsandsprings

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

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 Smalley