What Nanmac does

Nanmac Corporation is a US-based, founder-controlled (SDVOSB) designer and manufacturer of high-temperature thermal sensing instruments, founded in 1956 by NASA scientists and headquartered in Marlborough, Massachusetts with a state-of-the-art electronics manufacturing facility in Milford, MA. The company's core technology spans thermocouples (including proprietary Self-Renewing or Eroding variants achieving 8-microsecond response times for rocket propulsion), resistance temperature detectors (RTDs) to 850°C, NTC thermistor probes, and specialty refractory metal assemblies in molybdenum and tantalum, covering a measurement envelope from -200°C to 2,400°C. Nanmac operates an ISO/IEC 17025:2017 accredited calibration laboratory described as the highest-temperature commercial thermocouple calibration facility in the world at 2,000°C, with supporting pressure testing to 50,000 psia and vacuum leak testing.

Nanmac serves mission-critical temperature measurement applications across aerospace and defense (SpaceX, Boeing, Lockheed Martin, GE Aviation, Airbus), government research (Sandia National Laboratories), energy (GE Power, PlugPower), materials processing (Saint-Gobain), and industrial process verticals. The company operates an enterprise field sales motion led by direct engineering consultation from headquarters and supported by an exclusive manufacturer's representative (T&M Instruments) across Texas, Arkansas, Louisiana, and Oklahoma, with wholly-owned regional offices in Shanghai, China and Daegu, South Korea (the latter operated via partner Protech Company for Korea and Japan). Its business model combines made-to-order hardware sales (thermocouples, RTDs, thermistors, accessories such as transmitters, thermowells, conduit heads, and connectors) with professional services revenue from calibration and custom engineering engagements, priced on a quote basis with non-refundable engineering fees (NRE) for fully bespoke solutions.

The corporate umbrella includes the wholly-owned AccuTru brand (precision temperature measurement with MI-Dry insulation, Houston Ship Channel heritage) and sister company Infinity Fiber (fiber optic cable assemblies for AI data centers and military vehicles). Distribution is quote-based with net-30 cash terms, no returns are accepted, and orders cannot be cancelled once processed, reflecting the custom-engineered, specification-driven nature of the product mix. Marketing is primarily technical (whitepapers, certifications display, engineering consultation) rather than digital, consistent with the company's positioning as an aerospace-grade specialty supplier.

Name

Nanmac

Legal name

Nanmac Corporation

Website

https://nanmac.com

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

101–250 employees

Short description

Nanmac is a US-based manufacturer of high-temperature thermocouples, RTDs, and thermistor probes up to 2,400°C, serving aerospace and defense primes, government labs, and industrial process customers via custom engineering, calibration services, and a global direct sales channel.

Ownership category

akta.pro rank

Product category

Industrial Temperature Sensors

NAICS

Other Measuring and Controlling Device Manufacturing (334519)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Environmental Sensors (Temperature/Humidity/Gas/Air Quality) (HDAHALAD)

akta.pro secondary industry

Thermistors & Temperature Sensors (NTC/PTC/RTD Elements) (HDAHANAH)

Keywords

• Temperature sensors
• Thermocouple manufacturing
• Thermal measurement solutions
• Custom temperature sensors
• Sensor calibration services

Headquarters

HQ city

Holliston

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Temperature Sensor Products: Sale of thermocouples, RTDs, thermistors, and accessories. Products range from standard catalog items to fully customized sensor assemblies. Includes mineral insulated thermocouples, ultra-fast eroding thermocouples, surface measurement thermocouples, and specialty configurations.
2. Calibration and Testing Services: ISO/IEC 17025:2017 accredited calibration services for temperature sensors up to 2,000°C. Includes pressure testing up to 50,000 psia, vacuum leak testing, insulation resistance testing, and loop resistance testing. NIST traceable calibrations for thermocouples, RTDs, and thermistors.
3. Custom Temperature Sensor Engineering: Custom thermal solutions including thermal analysis, thermocouple tailoring for furnace atmospheres, in-field engineering support, 3D SolidWorks finite element analysis, and materials engineering support. Basic customizations at no additional fee; fully customized setups may require non-refundable engineering fee (NRE).
4. Sensor Accessories and Components: Connectors, thermowells, conduit heads (ATEX and FM approved), circuit boxes, digital displays, transmitters, and mounting hardware. Various temperature ratings from 100°C to 800°C.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels4 records

Core offering

Nanmac designs, customizes and manufactures total thermal sensing circuits including thermocouples (to 2,400°C), RTDs (to 850°C), and NTC thermistor probes for measurement from -200°C to 2,400°C. The company produces standard catalog sensors, fully customized sensor assemblies with engineering support, and provides ISO/IEC 17025:2017 accredited calibration and testing services through its high-temperature calibration laboratory.

Product overview

Nanmac is a manufacturer of temperature sensors and thermal measurement solutions. The product portfolio centers on three core sensor types: thermocouples (including bare wire, mineral insulated, ultra-fast eroding, and very high temperature variants to 2300°C), RTDs (Resistance Temperature Detectors to 850°C), and NTC thermistor probes. These core products are complemented by temperature transmitters (head mount, DIN rail, panel mount), digital displays and controllers (H3 series), thermowells, connectors, and conduit heads (general purpose, explosion-proof/ATEX). Specialty metals including molybdenum and tantalum tubing serve high-temperature applications. The company offers calibration services through an ISO/IEC 17025:2017 accredited lab, custom sensor design, and engineering support. Fiber optic solutions are available through the partner company Infinity Fiber.

Differentiator

Problem solved

Functional benefit

Brands

• AccuTru: A key brand under Nanmac Corporation specializing in precision temperature measurement solutions including high-performance thermocouples, RTDs, and self-validating sensor systems with proprietary MI-Dry insulation technology.

Products and services

• Thermocouples Industrial thermocouple temperature sensors covering types J, K, T, E, N, R, S, B, D, and C for general and extreme-environment applications up to 2,300°C, used across aerospace, defense, heat treating, plastics, oil & gas, and engine testing.
• RTD (Resistance Temperature Detector) Resistance temperature detectors rated up to 850°C with Pt100, Pt1000, Copper, and Nickel elements in Class A or B accuracy, available in 2-, 3-, and 4-wire configurations for industrial process and laboratory applications.
• NTC Thermistor Probes Negative Temperature Coefficient thermistor probes for surface, air-gas, HVACR, liquid, and patient monitoring applications; available in custom and standard machined metal housings in brass, stainless steel, aluminum, and specialized alloys, with ATEX explosion-proof and AS9100 aerospace assemblies available.
• Temperature Transmitters Industrial temperature transmitters in head-mounted ("Hockey Puck"), aluminum head-mounted with display, DIN rail mounted, and panel mount with display configurations for converting sensor signals to industrial control outputs.
• Calibration Services ISO/IEC 17025:2017 accredited calibration laboratory testing thermocouples at temperatures up to 2,000°C with NIST traceability, plus pressure testing to 50,000 psia, vacuum leak testing down to 20 mTorr with flows to 10^-12 cc/second, insulation resistance testing, and loop resistance testing.
• Custom Temperature Sensors Custom temperature sensor design and manufacturing service offering basic customization of standard catalog items at no additional fee, obsolete OEM sensor replacements, and fully customized sensor development supported by in-house engineering, 3D SolidWorks finite element analysis, and materials engineering. Non-refundable engineering fees (NRE) may apply for fully customized setups.
• Thermocouple Wire Calibrated thermocouple wire rated for -200°C to 2,300°C, available in types J, K, T, E, N, R, S, B, and C, calibrated to Special Limits of Error as matched pairs for custom probe fabrication and replacement.
• Thermocouple Extension Wire Extension grade thermocouple wire and multi-pair thermocouple cable used to extend sensor connections to instrumentation while maintaining calibration accuracy.
• Molybdenum Tubing High-temperature refractory metal tubing for thermocouple probes, rated up to 2,000°C, available in outside diameters from 0.125" to 0.250" for extreme-environment sensor sheathing.
• Tantalum Tubing Corrosion-resistant refractory metal tubing for high-temperature and corrosive-environment applications, melting point 3,017°C, suitable for vacuum furnaces and aggressive chemical service.
• Thermowells Protective wells for temperature sensors in flanged, general-use, heavy-duty tapered, and limited-space versions, accommodating 1/4" and 3/8" diameter sensor elements for industrial process integration.
• Explosion Proof (EP) & ATEX Approved Conduit Heads Explosion-proof conduit heads certified to ATEX, FM, and CSA standards for hazardous-location installations, available in aluminum or stainless steel construction.
• Temperature and Process Controllers Single-loop PID controllers and on/off controllers available in multiple DIN sizes with relay, analog output, RS-485 communication, and heating/cooling configurations for closed-loop temperature control.

Quantifiable outcome

• 8 microsecond response time for Self-Renewing thermocouples measuring 225°F change in 8 microseconds (equivalent to over 28,000,000°F per second)
• +4 more outcomes

Named customers9 records

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered core and minor.

• T&M InstrumentscoreChannel Partner/ Reseller/ DistributorT&M Instruments serves as the exclusive manufacturer's representative for Nanmac Corporation across Texas, Arkansas, Louisiana, and Oklahoma. Specializing in test equipment, testing services, process equipment, and comprehensive installation, repair, and calibration services. Technical sales engineers who are also seasoned engineers provide prompt and personalized support.
• AccuTrucoreStrategic or Co-development PartnerAccuTru, based in Texas, has been a trusted name serving the Houston Ship Channel for decades. Now a key brand under Nanmac Corporation, AccuTru significantly expands product offerings and enhances engineering capabilities. Specializing in precision temperature measurement solutions including high-performance thermocouples, RTDs, and self-validating sensor systems. Known for MI-Dry insulation technology and advanced sensor technologies.
• Infinity FibercoreTechnology or IntegrationInfinity Fiber, headquartered in Cerritos, California, is a sister company to Nanmac Corporation, specializing in the manufacture of high-quality fiber optic cable assemblies. Products extensively utilized in AI data centers and various military vehicles including naval shipboard applications and aerospace systems. Engineered to endure harsh environments for mission-critical scenarios.
• Propulsion Instrumentation Working Group (PIWG)minorStrategic or Co-development PartnerNanmac Corporation is a distinguished member of the Propulsion Instrumentation Working Group (PIWG), a coalition dedicated to establishing and upholding stringent standards for instrumentation utilized in turbine engines. Collaborates with leading organizations to ensure measurement tools meet rigorous demands of turbine propulsion systems, enhancing reliability and performance across aerospace and related industries.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Emerson (Rosemount): Major process instrumentation incumbent with Rosemount temperature, pressure, and analytical products. Competes broadly in process industries that overlap with Nanmac but is a much larger portfolio play.
• Honeywell Sensing: Global incumbent offering a broad portfolio of temperature, pressure, and flow sensors. Overlaps with Nanmac in aerospace and industrial customers but does not specialize in the ultra-high-temperature niche Nanmac leads.
• Yokogawa Electric: Industrial process instrumentation company offering temperature transmitters, sensors, and control systems. Overlaps in power, oil & gas, and chemicals end markets with Nanmac's process industry customers.

Emerging players

• Fluke Calibration: Calibration instrument and service provider that competes with Nanmac's ISO/IEC 17025 lab business for temperature calibration work. Fluke is broader in scope (electrical, pressure, temperature) while Nanmac specializes in ultra-high-temperature calibration.

Direct peers

• Pyromation: US-based manufacturer of industrial thermocouples, RTDs, thermowells, and accessories. Most direct small-to-mid-market peer to Nanmac in custom temperature sensors for process industries, plastics, and heat treating.
• Thermo Electric Company: Specialty manufacturer of thermocouples, RTDs, wire, and accessories for industrial and aerospace applications. Closely comparable in product mix and custom-engineering business model to Nanmac.
• WIKA Instrument: Global manufacturer of temperature, pressure, and level instrumentation including thermocouples and RTDs for industrial process applications. Comparable product line, geographic breadth, and presence in oil & gas, chemicals, and process industries that overlap with Nanmac's segments.
• Watlow Electric: Manufacturer of industrial heaters, thermocouples, RTDs, and process controllers serving semiconductor, aerospace, and thermal processing. Closest direct competitor to Nanmac in high-temperature industrial sensing with similar end markets and customization model.
• Omega Engineering: Largest broad-line industrial temperature sensor manufacturer (thermocouples, RTDs, thermistors, infrared). Directly comparable to Nanmac's catalog, but Omega serves a far wider customer base at commodity price points while Nanmac competes on high-temperature specialization.
• Thermocouple Technology (TTI): Specialty thermocouple manufacturer focused on high-temperature and custom configurations. Highly comparable in niche, customization model, and aerospace/process end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nanmac-corporation

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries3 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 Nanmac