National Spring, Inc

What National Spring, Inc does

National Spring, Inc. is a family-owned parts distribution and truck/trailer repair business founded in 1934 in Milwaukee, Wisconsin. The company combines a stocked parts operation with a 13-bay service facility, supported by a small team of six employees whose mechanics carry approximately 150 years of combined experience. Its customer base spans light, medium, and heavy-duty commercial trucks and trailers along with municipal and private fleet vehicles, with the service area concentrated in southeastern Wisconsin.

The company's core offering is an integrated parts-plus-service model: it maintains more than 5,000 parts SKUs in inventory for immediate availability and pairs that with in-house mechanical repair across the full duty-class spectrum. Revenue mechanics are not disclosed but are presumed to derive from a combination of parts markups on retail and wholesale transactions and labor charges on repair work, with fleet and municipal accounts likely forming a recurring-contract component alongside walk-in commercial customers.

There is no evidence of digital channels, proprietary technology platforms, or AI-enabled tooling; the business operates as a traditional, relationship-driven regional aftermarket service provider. The operating footprint is local, the ownership structure is private and family-held, and the company has not pursued any disclosed funding, acquisition, or geographic expansion activity.

Name

National Spring, Inc

Legal name

National Spring, Inc

Website

https://nationalspringinc.com

Company type

Private

Founded year

1934

Operating status

Operating

Headcount range

1–10 employees

Short description

National Spring, Inc. is a family-owned parts distributor and 13-bay truck and trailer repair facility, founded in 1934 in Milwaukee, Wisconsin, serving light, medium, and heavy-duty commercial trucks and municipal fleets across southeastern Wisconsin with 5,000+ parts in stock.

Ownership category

akta.pro rank

Headquarters

HQ city

Milwaukee

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Parts Sales: National Spring sells over 5,000 suspension, brake, and related parts including leaf springs, suspension components, brake parts, front-end parts, and accessories. Parts are sold as one-time purchases with prices ranging from approximately $100 to $400 per item based on the Hot Deals pricing table.
2. Professional Installation Services: The company provides professional installation of parts including complete spring and suspension service, brake and wheel-end service, alignments, DOT inspections, PM services, king pin replacement, and custom U-bolt fabrication. Services are provided at their 13-bay service facility by skilled mechanics.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

National Spring distributes over 5,000 truck and trailer parts (leaf springs, suspension components, brake parts, and front-end parts) and provides professional installation services including complete spring and suspension service, brake and wheel-end service, alignments, DOT inspections, PM services, and king pin replacement. The company operates a 13-bay service facility in Milwaukee, Wisconsin, serving light, medium, and Class 8 heavy-duty trucks, trailers, and municipal/fleet vehicles.

Product overview

National Spring, Inc. is a family-owned parts distributor and full-service repair facility founded in 1934 in Milwaukee, Wisconsin. The company operates as a single unified offering combining parts distribution with professional installation services. The product portfolio centers on three core components: (1) Parts distribution covering over 5,000 leaf springs, suspension parts, brake systems (hydraulic, air, and electric), and front-end components; (2) Professional repair and alignment services including DOT inspections; and (3) Vendor-branded products from manufacturers like Triangle Spring, Centric Parts, Timbren, and Dayton Parts. The company serves light, medium, and Class 8 heavy duty trucks, trailers, and municipal/fleet vehicles.

Differentiator

Problem solved

Functional benefit

Products and services

• Truck and Trailer Parts Distribution Distribution of over 5,000 suspension, brake, and related parts including leaf springs, suspension components, brake parts, and front-end parts for light, medium, and Class 8 heavy duty trucks and utility trailers.
• Leaf Springs Replacement and custom leaf springs for trucks, including individual leaves for repairs, custom-made U-bolts, and spring products from brands such as Triangle Spring and Dayton Parts.
• Suspension Parts Suspension components including hangers, torque arms, air bags, Timbren suspension enhancement systems, and parts for Hendrickson, Neway, Chalmers, and Hutchens brands.
• Front End Parts Front-end components including king pin kits, tie rod ends, drag links, and ball joints from Dayton Parts and Flagg.
• Brake Parts (Hydraulic, Air, Electric) Complete brake parts inventory covering hydraulic brakes (pads, rotors, calipers, master cylinders, wheel cylinders), air brakes (drums, camshafts, cam kits, brake hardware, Neo-Brake Premium lined shoe kits), and electric brakes for trailers.
• Repair Services Full-service repair facility offering complete spring and suspension service, brake and wheel-end service, DOT inspections, PM services, king pin replacement, beams rebushed, and custom U-bolts performed by skilled mechanics at the 13-bay Milwaukee shop.
• Alignment Services Wheel alignment services including computerized alignments, front-end alignments, complete alignments, 3 axle alignments, and fire truck alignment.
• Vendor-Branded Products (Triangle Spring, Centric Parts, Timbren, Dayton Parts, Redneck, etc.) Distribution of vendor-branded products from manufacturers including Triangle Spring (springs, suspension), Centric Parts (hydraulic brake parts), Timbren (load leveling systems), Dayton Parts/BATCO (springs, brake drums, king pin kits), and Redneck (electric and hydraulic brake assemblies).

Quantifiable outcome

• Reduced vehicle downtime through 5,000+ parts in stock and 13-bay shop capacity
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Triangle SpringcoreTechnology or IntegrationTriangle Spring is a reputable manufacturer of springs and suspension parts made in the USA. National Spring carries and distributes Triangle Spring products including springs and suspension components.
• Centric PartscoreChannel Partner/ Reseller/ DistributorCentric Parts is a leading manufacturer of light and medium duty hydraulic brake parts including pads, rotors, calipers, master cylinders, and wheel cylinders. National Spring is a distributor of Centric Parts brake products and hosts brake part videos on their website.
• Buyers ProductsminorChannel Partner/ Reseller/ DistributorBuyers Products supplies truck equipment and accessories including tool boxes, pintle hitches, trailer jacks, and towing/cargo control products. National Spring distributes Buyers Products items.
• TimbrencoreChannel Partner/ Reseller/ DistributorTimbren manufactures load leveling systems and load boosters. National Spring offers Timbren suspension enhancement systems and recommends them for vehicles requiring additional weight capacity while maintaining ride quality.
• Neo-BrakeminorChannel Partner/ Reseller/ DistributorNeo-Brake produces premium heavy duty relined air brake shoe kits. National Spring supplies Neo-Brake Premium lined boxed shoe kits for extra friction in air brake systems.
• AutomannminorChannel Partner/ Reseller/ DistributorAutomann supplies air springs, leaf springs, and steering/suspension parts. National Spring carries Automann products as part of their suspension parts inventory.
• Dayton Parts (BATCO)coreChannel Partner/ Reseller/ DistributorDayton Parts (BATCO) manufactures springs, suspension parts, brake drums (heavy duty), king pin kits, tie rod ends, spring brake and service chambers, and slack adjusters. National Spring sources these products and uses Dayton Parts steering components.
• Redneck Trailer SuppliescoreChannel Partner/ Reseller/ DistributorNational Spring is an authorized distributor of Redneck Trailer Supplies. Redneck provides Dexter, AL-KO, Demco, Atwood brake products, electric and hydraulic brake assemblies, suspension parts, springs, axles, wheels and tires for trailers.
• SircominorChannel Partner/ Reseller/ DistributorSirco supplies camshafts and cam kits, wheel studs and nuts, hub caps and gaskets, brake hardware, and electric trailer brake products. National Spring carries Sirco products for brake and wheel-end service needs.
• Federal-Mogul (National Seals, Bower/BCA Bearings)minorChannel Partner/ Reseller/ DistributorFederal-Mogul provides National Oil and Grease Seals, Bower/BCA Bearings. National Spring distributes these components as part of their wheel-end and bearing inventory.
• NewStarminorChannel Partner/ Reseller/ DistributorNewStar supplies air brake valves, governors, quick release valves, dash valves, leveling valves, foot valves, spring brake controls, gladhands, and diaphragms. National Spring carries NewStar products for air brake system service.

Scale indicators4 records

Recent moves3 records

Expansion highlights1 record

Direct peers

• Velocity Vehicle Group: Velocity Vehicle Group operates commercial truck dealerships and full-service repair facilities across the western and southern U.S. Its parts-and-service model for heavy duty trucks mirrors National Spring's integrated offering.
• FleetPride: FleetPride is the largest independent distributor of heavy-duty truck and trailer parts in North America, operating a network of parts locations and service centers. It is the most directly comparable scaled competitor to National Spring's parts-plus-service model for medium and heavy duty trucks.
• Premier Truck Group: Premier Truck Group is a commercial truck dealer group with parts, service, and collision repair operations. It competes with National Spring for fleet and owner-operator service business on heavy duty trucks.
• TravelCenters of America (TA Truck Service): TravelCenters of America operates highway truck service centers offering tires, brakes, alignments, and DOT inspections. Its on-highway truck service model is comparable to National Spring's general truck repair and DOT inspection offering.
• TruckPro: TruckPro is a national distributor of medium and heavy duty truck parts and tires with in-house service capabilities. It directly competes with National Spring in parts distribution and truck repair across multiple geographies.
• Rush Enterprises: Rush Enterprises is the largest network of commercial truck dealerships in North America, operating extensive parts and service operations. It is a scaled analog to National Spring's combined parts distribution and truck service business.

Broad incumbents

• Genuine Parts Company (NAPA Heavy Duty): Genuine Parts Company distributes motor vehicle parts through NAPA, including a heavy duty truck parts program. It is a much larger incumbent offering overlapping parts categories but as part of a broader portfolio across many vehicle types.

Others

• BendPak: BendPak manufactures vehicle lifts, wheel service equipment, and other shop equipment used by truck repair facilities like National Spring. It is adjacent to the business as an equipment supplier rather than a direct competitor.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/national-spring-inc

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 National Spring, Inc