Military CNC Machining for MIL-SPEC Parts
ITAR Registered | AS9100 and ISO 9001 Certified
Greno Industries provides precision military CNC machining services for MIL-SPEC components and is a trusted manufacturing partner for the U.S. military, defense contractors, and OEMs supporting critical defense programs.
Our flagship product, the GIS Valve, is installed on more than 400 U.S. Navy ships and demonstrates Greno’s ability to manufacture highly engineered components for extreme military environments. F
With our advanced CNC milling, large-diameter turning, deep-hole gun drilling, welding, industrial assembly, and end-to-end manufacturing support, Greno is equipped to support both new and legacy military programs.
The GIS Valve: Military-Grade Engineering
One of the strongest demonstrations of Greno’s military machining capability is the GIS Valve, a high‑performance, high‑pressure steam safety valve originally developed for the U.S. Navy.
The GIS Valve is engineered to withstand:
Pressures up to 3,000 PSI
Temperatures exceeding 1,100°F
Continuous high-cycle operation
Corrosive naval environments
Severe vibration and shock conditions
Features such as remote operation, modular maintenance design, and precision-machined sealing surfaces demonstrate Greno’s ability to manufacture military-grade components requiring the highest levels of reliability and performance.
Today, the same engineering discipline, machining precision, and quality assurance processes used in GIS Valve manufacturing are applied to every MIL-SPEC component produced at Greno Industries.
Why Military Contractors Choose Greno Industries
Greno Industries is certified under MIL-Q-9858 for military parts quality and equipped to bid and supply parts through the TACOM procurement network, serving key arsenals across the country, including Warren, MI, and Watervliet, NY.
Certified Quality for Mission-Critical Components
Our certifications and compliance standards include:
AS9100:2016
ISO 9001:2015
NIST 800-171
DFARS compliance
These systems ensure rigorous process control, documentation, inspection, and traceability throughout production.
Large-Format and Complex CNC Machining
Greno supports both small precision components and large heavy-machined assemblies through capabilities including:
Large-diameter CNC turning
Multi-axis CNC milling
Deep-hole gun drilling
Precision boring and threading
Alloy‑specific industrial welding and fabrication
This allows Greno Industries to produce both small precision components and large, heavy, parts for platforms like military vehicles.
Expertise in High-Performance Alloys
We routinely machine:
Inconel
Titanium
Stainless steels
Alloy steels
High-strength nickel alloys
These materials are commonly used in defense, naval, aerospace, and high-temperature military applications.
Fast Turnaround and Material Availability
Greno maintains a substantial in-house raw material inventory and offers rapid-response manufacturing for urgent defense and military requirements.
End-to-End Manufacturing Support
Beyond machining, Greno Industries provides:
Industrial assembly services
Kitting and packaging
Machined and sourced component integration
Supply chain coordination
Field-ready delivery solutions
This end-to-end manufacturing approach simplifies procurement and improves supply chain efficiency for defense customers.
MIL-SPEC Machining
MIL-SPEC machining requires strict compliance with Department of Defense (DoD) standards governing component performance, durability, and traceability. Military-grade components must meet exact specifications related to:
Dimensional tolerances and geometric accuracy
Material chemistry and mechanical properties
Heat treatment and metallurgical integrity
Surface finish, coatings, and corrosion resistance
Environmental durability under shock, vibration, humidity, salt fog, and temperature extremes
Serialization, inspection documentation, and full traceability
Standards such as MIL‑STD‑810, MIL‑STD‑461, and various MIL‑DTL specifications define how parts must perform in real‑world military environments. Greno’s quality management system ensures that every MIL-SPEC part is produced, inspected, and documented to these requirements.
Tactical and Armored Ground Vehicles
High mobility multipurpose wheeled vehicles (HMMWVs), joint light tactical vehicles (JLTVs), and mine-resistant ambush-protected vehicles (MRAPs) are just some of the platforms we can support. The components we can machine include:
Suspension and steering hardware
Drivetrain and power‑transfer components
Brake system housings and brackets
Structural mounting hardware
High‑strength fasteners and studs
These mission-critical components require exceptional durability, repeatability, and material integrity to perform reliably in combat and field operations.
Artillery, Armament and Fire‑Control Systems
Greno’s large‑diameter turning and gun drilling services support components such as:
Breech and recoil system components
Barrel support hardware
Precision alignment and mounting components
High‑pressure housings and rings
Deep‑hole drilling, one of Greno’s signature capabilities, enables the production of long, straight, high‑accuracy bores essential for weapon‑system performance.
Naval and Marine Support Vehicles
Naval and marine defense systems require components capable of withstanding continuous exposure to corrosive saltwater environments, vibration, and extreme temperatures. Greno’s expertise machining stainless steel, Inconel, nickel alloys, and other corrosion-resistant materials supports long-term reliability in demanding naval applications.
Examples of naval and marine components we manufacture include:
Pump housings
Valve bodies
Shaft components
Structural brackets
High‑strength corrosion‑resistant fasteners
High-pressure fluid system components
As a trusted supplier to U.S. Navy programs, Greno understands the precision and reliability required for mission-critical marine systems.
Ask Greno for Military-Grade Machining
Whether it’s supporting TACOM procurement programs, supplying military arsenals in Warren, Michigan and Watervliet, New York, or partnering with Tier-One defense contractors, Greno Industries has built a reputation for precision, reliability, and long-term manufacturing support.
As military systems continue evolving through electrification, advanced materials, and next-generation defense technologies, Greno continues investing in advanced CNC machining, cybersecurity compliance, quality systems, and manufacturing technology to support the future of American defense manufacturing.