Precision Fluid Management Solenoid Actuators

Beyond Reliable Valves & Solenoid Actuators

Critical devices for fluid management, such as solenoids, actuators, and valves, are used in various automotive applications including transmissions, variable valve timing, and braking systems, as well as in many other pneumatic and hydraulic systems. NN Inc’s precision machining capabilities enable us to achieve tolerances in the micron and sub-micron ranges.

With extensive experience in producing solenoid components such as armatures, pole pieces, and plungers, as well as precision valve components including spools, valve seats, sleeves, housings, and fittings, NN Inc ensures top-notch quality.

In addition to machining and grinding, NN Inc’s manufacturing capabilities encompass deburring, surface finishing, and honing to achieve tight tolerances on critical component features. Our proven capability to produce quality components at scale provides our customers with the best value.

Solenoid Actuators What We Build

NN Inc has extensive experience in producing solenoid components such as armatures, pole pieces, and plungers, as well as precision valve components including spools, valve seats, sleeves, housings, and fittings.

ABS Valve Sleeve & Seat

VVT Sleeve Pin Guide

Transmission Solenoid Spool

Transmission Actuator Tube

Oil Pressure Control Valve

Valve Sleeves

Braking Actuators Pins

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Valve Spools, Sleeves and Tubes


NN Inc’s precision manufacturing capabilities enable us to meet critical tight tolerances for Hole IDs, Cylindricity, Surface Finishes, Burr Control, and many other features. We are committed to providing the best value while upholding the highest quality standards.

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Actuator Pin Assembly

Idle Speed Valve Comp

Transmission Valve Comp

Pole Pieces

Hydraulic Lock Pin & Spring Seat

VVT Plunger Assembly

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Solenoid Armatures, Plungers, and Pole Pieces


NN Inc’s precision manufacturing capabilities enable us to meet critical tight tolerances for O.D.s, including Cylindricity and Surface Finishes, among other features. We are dedicated to providing the best value while maintaining the highest quality standards.

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ABS Seats

Pump Fittings

Hydraulic Lock Pin & Spring Seat

Nozzle & Sensor Fittings

Valve Tappet Components

Park Lock Control Housing

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Valve Seats and Bodies and Fittings


NN Inc’s precision manufacturing capabilities enable us to meet critical tight tolerances for O.D.s, including Cylindricity, Threads, Surface Finishes, and many other features. We are committed to providing the best value while upholding the highest quality standards.

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VVT Rotor and Drive Gear

Transmission Actuator Components

Brake Rods

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System Components


NN Inc’s precision machining capabilities and expertise enable us to produce components for entire systems, including braking, transmission, and variable valve timing systems. These are just a few examples of NN Inc’s ability to provide precision components for complete systems.

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How We Build

NN Inc. has extensive engineering experience with precision machining, grinding, and a diverse group of secondary processes that are well suited to the manufacture of the injector, solenoid, and spool valve components.

Precision Machining Capabilities


  • CNC Sliding Headstock
  • CNC Fixed Stock
  • Cam Automatic Multi-Spindle
  • CNC Multi-Spindle
  • Rotary Transfer Machining
  • OD Toler. +/- 0.010 mm
  • ID Toler. +/- 0.010 mm
  • Concentricity: 0.020mm
  • Angular Position 0.050mm
  • OD Size Range 8 – 50mm
  • Length Range: 60 – 170mm

Precision Grinding Capabilities


  • Thru-Feed OD
  • In Feed OD
  • Between Center OD
  • Centerless
  • ID Grinding
  • OD Toler. +/- 0.002 mm
  • ID Toler. +/- 0.005 mm
  • Roundness <0.001 mm
  • Surface Finish: Rz 0.5
  • Flatness 0.0003 – 0.0020 mm

Quality Capabilities


  • Metrology Equipment
    • Optical Scanners
    • Precision Runout
    • Surface Finish Profilometer
    • Custom Hard Gaging
  • Automated inspection systems
  • Quality Certifications
    • IATF-16949:2016
    • ISO 9001:2015
    • ISO 14001:2015

Secondary Operation Capabilities


  • Hard Turning
  • CNC Chucker
  • CNC Milling
  • ID Honing
  • Diamond Bore Sizing
  • System Assembly
  • Ultrasonic Cleaning
    • Particle Counting
    • Gravimetric Analysis
  • Heat treating
  • Induction Heat Treating

Contact Us and See What We Can Create Together

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