Copper State Bolt & Nut Company

What Copper State Bolt & Nut Company does

Copper State Bolt & Nut Company is a Phoenix, Arizona-based, second-generation family-owned and women-owned industrial distributor and manufacturer founded in 1972 by Martin Calfee. The company sells traditional fasteners (bolts, nuts, washers, screws, rivets, pins, and structural products) alongside industrial supplies, construction products, safety/PPE, tools, and specialty manufactured parts through 30+ integrated branch locations operating on a unified ERP system across the United States. It serves more than 16,000 customers in five primary verticals: construction, manufacturers, energy production, mining & industrial, and facility maintenance. Revenue streams include one-time product sales (traditional fasteners, industrial supplies, and in-house specialty manufacturing of large-diameter bolts from 1/2" to 4"), managed services (Vendor Managed Inventory with on-site specialists and 24/7 vending options), and professional services (commercial heat treatment since 2016, kitting and assembly, sequencing and site logistics for large-scale energy projects, and global supply chain management reaching 6 continents).

The company's technical differentiator is the proprietary BoltSense® product family, centered on the Load Monitoring Fastener+ (LMF+®)—a wireless, Bluetooth-connected bolt with a patented strain gauge sensor embedded in the central axis that continuously monitors tension and transmits data to a cloud-based Global Data Network (GDN), achieving ASTM F2482 ±5% accuracy (±2% in practice) with IP65 water resistance. Complementary products include the Load Indicating Fastener (LIF) for spot-check monitoring, the BoltSense Auto Shut-Off Control System, and the BoltIQ+ and Bolt Reader mobile applications on iOS and Android. Copper State monetizes primarily through unit pricing on its e-commerce platform and direct sales channels, with commercial credit terms of 1%-10, Net 30; standard pricing applies subject to customer relationship and order volume. The BoltSense technology is co-developed with Transmission Dynamics, and operations are backed by ISO 9001:2015 certification (TUV Rheinland), A2LA Testing Laboratory Accreditation (#0809.01), WBE certification, MSHA-certified field employees, and EICC/REACH conformance for responsible sourcing.

Name

Copper State Bolt & Nut Company

Legal name

Copper State Bolt & Nut Company

Website

https://copperstate.com

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Copper State Bolt & Nut Company is a Phoenix-based, family-owned industrial distributor and manufacturer serving 16,000+ customers across construction, manufacturing, energy, and mining via 30+ U.S. branches, combining traditional fasteners with proprietary BoltSense® load-monitoring technology and value-added services.

Ownership category

akta.pro rank

Product category

Industrial Fasteners and Construction Supply Distribution

NAICS

Bolt, Nut, Screw, Rivet, and Washer Manufacturing (332722), Precision Turned Product Manufacturing (332721)

SIC

Bolts, Nuts, Screws, Rivets & Washers (3452), Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

Fasteners, Nails, Screws & Anchors Retail (CRAIADAC)

Keywords

• Industrial fasteners
• Construction supplies
• Load monitoring bolts
• Mining fasteners
• Vendor managed inventory

Headquarters

HQ city

Phoenix

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Product Sales - Fasteners: Traditional fasteners including bolts, nuts, washers, screws, rivets, pins, and structural products represent nearly half of business. Large diameter specialty fasteners manufactured in-house.
2. Product Sales - Industrial Supplies: Construction products, industrial supplies, safety products, tools and accessories, fluid sealing products.
3. Specialty Manufacturing: In-house manufacturing of large diameter bolts and custom fasteners. ISO 9001:2015 certified manufacturing facility specializing in hot-forged products from 1/2" to 4" diameter.
4. Commercial Heat Treatment: In-house commercial heat treatment capabilities since 2016, offering neutral through hardening, age hardening, oil quenching, normalizing, stress relieving, and solution annealing services.
5. Vendor Managed Inventory (VMI) Services: On-site inventory management services with daily, weekly, and/or monthly replenishment. Includes 24/7 options with automated vending machines and JIT shipments.
6. Kitting and Assembly Services: Custom kitting, packaging, and assembly services for production and construction projects, particularly for renewable energy sector.
7. Sequencing and Site Logistics: Product sequencing, palletization, and site logistics services for large-scale construction and energy production projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels4 records

Core offering

Copper State Bolt & Nut Company manufactures and distributes industrial fasteners, including bolts, nuts, washers, screws, rivets, pins, and structural products, alongside construction supplies, safety/PPE, tools, and accessories. The company operates an ISO 9001:2015 certified in-house manufacturing facility in Phoenix specializing in large diameter bolts (1/2" to 4") and custom fasteners, including its proprietary BoltSense® Load Monitoring Fastener (LMF+) technology. It supports customers through 30+ integrated branch locations with a unified ERP system, providing e-commerce ordering, Vendor Managed Inventory (VMI), kitting and assembly, sequencing and site logistics, and global supply chain services.

Product overview

Copper State Bolt & Nut Company is a manufacturer and distributor of fasteners and related industrial products operating through a platform-plus-services model. The core product offering centers on the BoltSense® product family, which includes the Load Monitoring Fastener+® (LMF+®) for continuous wireless tension monitoring and the Load Indicating Fastener (LIF) for spot-check monitoring, both supported by the Bolt Reader mobile app. Traditional fasteners represent nearly half the business, complemented by specialty manufactured large-diameter bolts, construction products, safety equipment, tools, and industrial supplies. The company provides value-added services including Vendor Managed Inventory (VMI), kitting and assembly, sequencing and logistics, global supply chain management, and in-house heat treatment—all supported by 30+ branches operating on a unified ERP system.

Differentiator

Problem solved

Functional benefit

Brands

• BoltSense®: A solution-focused product family providing tools to diagnose and define bolting procedures, featuring Load Monitoring Fastener technology for real-time tension data.
• LMF+® (Load Monitoring Fastener+)
• LIF (Load Indicating Fastener)
• BOLTSENSE® PRODUCTS

Products and services

• BoltSense® A solution-focused product family providing tools to diagnose and define bolting procedures, featuring real-time tension data for achieving critical joint strength in assembly and repair of key infrastructure. Aimed at industrial buyers across construction, energy, and mining.
• Load Monitoring Fastener+® (LMF+®) A wireless, accurate, and automatic load monitoring fastener system that allows users to continually observe and record the true tension of fasteners during installation and while equipment is in operation, with automated alerts when tension exceeds or falls below predetermined thresholds. Features Bluetooth connectivity, IP65 water resistance, ASTM F2482 ±5% accuracy, and cloud-based Global Data Network transmission. Targets industrial operations where bolt failure causes unplanned downtime.
• Load Indicating Fastener (LIF) A fastener with the same base as LMF+ but without the continuous transmitting cap; includes a stainless steel dust cap and readings are taken with a clip-on reader for spot-check monitoring. Provides data-informed tension verification at lower cost than continuous monitoring.
• Bolt Reader App A mobile application for iOS devices that connects via Bluetooth to LMF+ and LIF bolts to display real-time bolt tension readings and monitoring information for field technicians and maintenance crews.
• BOLTIQ+ Mobile App A mobile application for Android and iOS devices that provides bolt torque and tension calculations using generalized assumptions and user-supplied inputs for fastener engineering and field use.
• BoltSense Mobile App A mobile application for Android and iOS devices designed to provide real-time bolt tension monitoring and performance visibility for mission-critical infrastructure, with Bluetooth connectivity to monitoring devices and sensors.
• Fasteners Traditional fastener products including bolts, cap screws, nuts, washers, socket products, construction screws, rivets, pins, structural products, kits, assortments, small screws, threaded rod, studs, and metric, stainless, and non-ferrous options. Represents nearly half of company revenue and is sold to industrial buyers across all served sectors.
• Construction Products Construction-specific products including anchors, powder actuated pins and loads, Caddy products, firestop, strut and accessories. Sold to construction contractors and steel fabricators.
• Safety & PPE Personal protective equipment and safety products including fall protection, safety vests, extension cords, gloves, tool lanyards, hard hats, respirators, safety glasses, and industrial supplies.
• Tools & Accessories Hand tools, power tools, drill bits, hole saws, saw blades, laser tools, taps, dies, diamond blades, pneumatic tools, and abrasives.
• Specialty Manufactured Parts In-house manufactured large diameter bolts and custom fasteners including 12-point flange bolts, shoulder bolts, load monitoring bolts, anchor bolts, plow bolts, mill liner bolts, and specialty forged head bolts. Manufactured in an ISO 9001:2015 certified Phoenix facility specializing in hot-forged products from 1/2" to 4" diameter.
• Vendor Managed Inventory (VMI) Hands-on inventory management services where Copper State specialists manage and stock customer facilities with daily, weekly, or monthly replenishment to eliminate overstock or stockout issues. Includes emergency after-hours service and JIT shipments with 24/7 automated vending machine options.
• Kitting and Assembly Custom sorting, grouping, and packaging of items to customer specifications for specific tasks, with pre-assembly capabilities. Used heavily for production lines and renewable energy construction projects.
• Sequencing and Site Logistics Product organization and palletization techniques that arrange products in point-of-use order prior to delivery to reduce loss and save space onsite, achieving under 1% total site loss on energy production projects.
• Global Supply Chain Services Sourcing products from domestic and overseas suppliers with kitting, packaging, assembly, special quality inspections, and secondary processing at origin. Direct shipments to 6 continents with local resources in East Asia overseeing the supply chain.
• Commercial Heat Treatment In-house commercial heat treatment capabilities including neutral through hardening, age hardening, oil quenching, normalizing, stress relieving, and solution annealing. Available since 2016 to support manufactured parts and customer work.

Quantifiable outcome

• $12M annual savings in one mine site due to eliminated unplanned downtime
• +3 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Transmission DynamicscoreTechnology or IntegrationPartnership for BoltSense technology development and support. Transmission Dynamics and Copper State together have decades of experience in critical fastener applications, mechanical engineering, sensor hardware/software design, and advanced data analytics. Transmission Dynamics is a global leader in combining these skill sets to help identify and resolve root causes to reduce maintenance costs and extend asset life.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Fastenal: Fastenal is the largest US B2B fastener and industrial supply distributor with on-site VMI (bin stock), national branch network, and growing IoT/smart vending offerings. It is the most direct competitor to Copper State's branch-based fastener distribution + VMI model, though at significantly larger scale.
• Lawson Products: Lawson Products is a specialty distributor of fasteners, fittings, and maintenance products sold through a direct-sales model to industrial customers. Closest scale and model analog to Copper State in the public fastener distribution space.
• McMaster-Carr: McMaster-Carr is a private, catalog/e-commerce leader in industrial supplies including a deep fastener assortment. Same core product category and same broad industrial customer base, but with a fundamentally different digital-first, no-sales-rep GTM model.
• MSC Industrial Direct: MSC Industrial is a major US metalworking and MRO fastener distributor serving manufacturers, with national distribution and a strong e-commerce platform. Directly comparable to Copper State's Manufacturers and Facility Maintenance verticals.
• Würth Industry North America: Würth Industry is the industrial division of the Würth Group, focused on fastener supply, vendor-managed inventory (CPS), and supply-chain solutions for manufacturers. Highly comparable VMI-led, manufacturing-customer business model.

Emerging players

• Nord-Lock Group: Nord-Lock specializes in bolt-securing solutions and has expanded into bolt monitoring / digital joint integrity (e.g., Leakage Detection Sensors). Directly comparable to BoltSense as a smart-bolting technology competitor.

Regional players

• Birmingham Fastener & Supply: Birmingham Fastener is a regional fastener manufacturer-distributor in the US Southeast, including structural bolts and specialty fasteners. Comparable product mix and manufacturing-distribution hybrid, but concentrated in a different geography than Copper State.

Broad incumbents

• Hilti Group: Hilti manufactures and sells tools, fasteners, anchors, and software/services for the construction industry, including connected fastening tools. Comparable in construction-customer overlap, with adjacent proprietary fastening technology.
• W.W. Grainger: Grainger is the largest US industrial MRO distributor, with KeepStock VMI, branch network, and broad product portfolio that includes fasteners as a subset. Comparable in channel and customer overlap but operates at much broader scale and category breadth.
• Applied Industrial Technologies: Applied Industrial Technologies distributes bearings, power transmission, fluid power, and industrial products with strong service/support depth. Overlaps with Copper State's fluid-sealing and industrial MRO offering, but is broader in category and larger in scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/copper-state-bolt-nut-company

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Copper State Bolt & Nut Company