NAICS 336370 Quarterly Industry Report
Motor Vehicle Metal Stamping
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 336370Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry report for NAICS 336370 draws on verified data from the U.S. Census Bureau[5], Bureau of Labor Statistics[6], and the Small Business Administration[7]. Our research team compiles establishment counts, employment data, and SBA eligibility criteria specific to motor vehicle metal stamping. Reports are updated quarterly to reflect new Census releases and regulatory changes.
Industry Snapshot
Key metrics for the motor vehicle metal stamping industry.
Industry Definition & Overview
Motor Vehicle Metal Stamping (NAICS 336370) encompasses establishments primarily engaged in manufacturing motor vehicle stampings, including body parts, fenders, doors, and stamped components for motor vehicles. Products include exterior body panels such as hoods, roof panels, quarter panels, and trunk lids; structural stampings including floor pans, rocker panels, and A/B/C pillar reinforcements; brackets, mounting plates, and cross members; and frame rail components for body-on-frame vehicles. The U.S. Census Bureau[5] classifies this industry under motor vehicle parts manufacturing.
Roughly 358 active businesses employ an estimated 43,200 workers in this industry. Production requires massive mechanical and hydraulic transfer presses rated from 800 to 5,000 tons, progressive die sets costing $500,000 to several million dollars each, and tandem press lines that stamp panels through four to six sequential die operations. A single vehicle platform may require 200 to 400 unique stamped parts, each needing dedicated tooling. Parts ship on returnable shipping racks designed for each stamping to prevent surface damage during transportation.
Steel and aluminum sheet represent the sole raw material categories, purchased directly from mills or through steel service centers. Advanced high-strength steel (AHSS) grades including dual-phase, TRIP, and press-hardened boron steel have replaced mild steel in structural stampings to meet crash safety requirements while reducing body-in-white weight. Aluminum closures (hoods, trunk lids, doors) appear on an increasing number of vehicle platforms where mass reduction justifies the higher material and tooling costs. Hot stamping technology heats boron steel blanks above 900 degrees Celsius and forms them in water-cooled dies, producing parts with tensile strength above 1,500 megapascals for B-pillar and structural roof rail applications where occupant protection is most critical.
What's Included in This Industry
- Exterior body panel stamping including hoods and doors
- Structural reinforcement and pillar stamping
- Floor pan and underbody stamping production
- Frame rail and cross member stamping
- Bracket and mounting plate stamping
- Aluminum closure panel stamping
- Hot stamped boron steel component production
- Progressive die stamping for small vehicle parts
- Blanking and coil processing operations
- Stamping die design and build for vehicle programs
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Transportation Equipment Manufacturing | 336 |
| Industry Group | Motor Vehicle Parts Manufacturing | 3363 |
| NAICS Industry | Motor Vehicle Metal Stamping | 33637 |
| National Industry | Motor Vehicle Metal Stamping | 336370 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 336390 | Other Motor Vehicle Parts Manufacturing | Manufactures other motor vehicle parts including assembled components and hardware rather than the raw stamped metal panels and structural parts produced at stamping presses here |
| 336110 | Automobile and Light Duty Motor Vehicle Manufacturing | Assembles complete automobiles using stamped body panels supplied by this industry rather than performing the metal stamping operations that produce those panels |
| 336310 | Motor Vehicle Gasoline Engine and Engine Parts Manufacturing | Manufactures gasoline engines classified under powertrain rather than the body and structural stampings produced for vehicle body-in-white construction in this classification |
| 332119 | Metal Crown, Closure, and Other Metal Stamping (except Automotive) | Operates metal stamping operations for non-automotive products classified separately from the vehicle-specific body panels and structural stampings produced here |
| 333517 | Machine Tool Manufacturing | Produces metal forming machine tools including the stamping presses and die sets used by this industry rather than the stamped automotive components produced on that equipment |
| 336211 | Motor Vehicle Body Manufacturing | Manufactures truck bodies and cabs using different construction methods than the high-volume press stamping operations that produce passenger vehicle body panels here |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Michigan | 31.6% | 220 |
| 2 | Ohio | 17.4% | 121 |
| 3 | Tennessee | 6.5% | 45 |
| 4 | Illinois | 6.3% | 44 |
| 5 | Indiana | 6.0% | 42 |
| 6 | Texas | 4.2% | 29 |
| 7 | Kentucky | 3.9% | 27 |
| 8 | Alabama | 3.7% | 26 |
| 9 | California | 2.6% | 18 |
| 10 | Georgia | 2.0% | 14 |
% Of Establishments
0%
32%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
8
Total SBA Loans
$22.4M
Total Loan Volume
$2.8M
Average Loan Size
25 yrs
Average Loan Term
7.50%
Average Interest Rate
0
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA[7] sets the size standard for NAICS 336370 at 750 employees. Firms below this threshold qualify for small business set-aside contracts and SBA-backed lending programs. Federal procurement includes stamped body panels for military vehicle repair, structural components for armored vehicle production, and stamped brackets for defense vehicle upfit programs. The SBA's contracting programs[8] support manufacturers pursuing Army TACOM and Defense Logistics Agency stamping contracts. Eligible businesses can access SBA 7(a) loans[9] for working capital, equipment, and acquisition financing, while 504 loans[10] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Comerica Bank | 8 | $22.4M | $2.8M |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 336370?
Manufacturers of stamped metal parts for motor vehicles classify here. Products include exterior body panels, structural reinforcements, floor pans, frame rails, brackets, aluminum closures, and hot stamped boron steel components per the Census Bureau[5] classification.
How is the motor vehicle stamping industry structured?
Roughly 358 businesses employ an estimated 43,200 workers per Census data[11]. Large Tier 1 stampers operate massive press lines producing body panels for multiple OEM customers while smaller firms serve as Tier 2 suppliers stamping brackets, reinforcements, and lower-volume structural components.
What is the SBA size standard for NAICS 336370?
The SBA[7] sets the threshold at 750 employees. Businesses with fewer than 750 average employees qualify as small for federal contracting preferences and SBA-backed financing programs including 7(a) and 504 loans.
What NAICS codes are related to motor vehicle stamping?
Related codes include 336390 (Other Vehicle Parts), 336110 (Automobiles), 336310 (Engines), 332119 (General Metal Stamping), 333517 (Machine Tools), and 336211 (Vehicle Bodies). Each covers either other automotive systems, general stamping, or equipment manufacturing distinct from vehicle-specific press stamping.
What industries purchase motor vehicle stampings?
Automobile assemblers, steel mills, machine tool makers, general metal stampers, and heavy truck manufacturers interact most directly. Steel pricing and availability directly affect production costs, while press capacity use depends entirely on vehicle production schedules from OEM assembly plant customers.
What activities are included in NAICS 336370?
Activities include blanking steel and aluminum coil into flat blanks, operating transfer press lines for multi-stage panel stamping, running progressive dies for bracket and reinforcement production, hot stamping boron steel for ultra-high-strength structural parts, trimming and piercing stamped panels, and inspecting finished parts for dimensional accuracy and surface quality.
Can motor vehicle stamping manufacturers qualify for SBA loans?
Yes, firms below 750 employees qualify for SBA lending programs[8] including 7(a) and 504 loans. Transfer press lines, progressive die sets, blank washers, part inspection CMM systems, and hot stamping furnaces represent capital investments suited to SBA 504 equipment financing.
Where are motor vehicle stamping plants concentrated?
Production concentrates heavily in Michigan, Ohio, Indiana, and Kentucky within the Midwest automotive corridor. Stamped body panels are large, fragile, and expensive to transport, requiring proximity to the vehicle assembly plants they supply. Most stamping facilities operate within 200 miles of their primary OEM customers to minimize freight costs and enable returnable rack logistics.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Bureau of Labor Statistics bls.gov
- [7]Small Business Administration sba.gov
- [8]SBA's contracting programs sba.gov
- [9]SBA 7(a) loans sba.gov
- [10]504 loans sba.gov
- [11]Census data naicslist.com
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