The following Product Service Codes (PSCs) are commonly associated with NAICS 221121, Electric Bulk Power Transmission and Control

PSC 5210 Measuring Tools, Craftsmen's

Products
Federal Category 5.3: Industrial Products & Services Hardware & Tools

Includes
Calipers; Levels; Micrometers; Plumb Bobs; Precision Tapes; Squares; Angle Gages; Center Gages; Depth Gages; Draw Gages; Drill Point Gages; Fillet and Radius Gages; Glaziers' Gages; Height Gages (Vernier); Planer Gages; Rivet Selector Gages; Saw Tooth Set Gages; Screw Pitch Gages; Surface Gages; Telescoping Gages; Thickness Gages; Tube Bead Gages; Tube Flare Gages; Twist Drill Gages; Twist Drill and Rod Gages; Twist Drill and Tap Gages; Taper-Wire-Thickness Gages; Wire Gages; Tool Setting Planer and Shaper Gages; Gage Blocks.

Notes
This class does not include special inspection gages, which are classified in class 5220.

Possible NAICS Codes
333991 – Power-Driven Handtool Manufacturing
444140 – Hardware Retailers

PSC 6150 Miscellaneous Electric Power and Distribution Equipment

Products

PSC 5963 Electronic Modules

Products
Federal Category 13.3: Electronic & Communication Equipment Electrical & Electronics Equipment

Excludes
Microcircuits; Electronic Test Equipment Plug-In Units.

Notes
The term "electronic module" as used in this class designates an electronic component designed for use in various equipment or end item applications, and capable of controlling voltage and/or current to produce gain, oscillation, switching or similar integral electronic functions. It consists of a collection of miniaturized electronic parts and/or elements in a single replaceable package with plug-in mounting which will also complete the required electrical connections. It is not normally subject to disassembly as distinguished from such items as CIRCUIT CARD ASSEMBLY and ELECTRONIC COMPONENTS ASSEMBLY. These modules conform to industry or government specifications/standards that define all physical dimensions and electrical parameters required to promote commonality and ensure proper operational performance.

Possible NAICS Codes
334111 – Electronic Computer Manufacturing
334413 – Semiconductor and Related Device Manufacturing
334418 – Printed Circuit Assembly (Electronic Assembly) Manufacturing
541519 – Other Computer Related Services
334419 – Other Electronic Component Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
423610 – Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
334417 – Electronic Connector Manufacturing
444180 – Other Building Material Dealers

PSC 6130 Converters, Electrical, Nonrotating

Products
Federal Category 13.3: Electronic & Communication Equipment Electrical & Electronics Equipment

Includes
Complete Battery Charging Equipment, Nonrotating; Power Sup-plies, Multiapplication.

Excludes
Rectifying Tubes; (FSC 5960); Rectifying Crystals (FSC 5961); Rotating Equipment (FSC 6125); Transformers (FSC 5950); and Semiconductor Devices and Associated Hardware (FSC 5961).

Notes
This class includes devices employing a means other than mechanical rotation for changing electrical energy from one form to another (i.e., AC to AC, DC to DC, AC to DC, and DC to AC).

Possible NAICS Codes
335999 – All Other Miscellaneous Electrical Equipment and Component Manufacturing
335931 – Current-Carrying Wiring Device Manufacturing
334416 – Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing
335312 – Motor and Generator Manufacturing
333310 – Commercial and Service Industry Machinery Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336611 – Ship Building and Repairing
333241 – Food Product Machinery Manufacturing
334412 – Bare Printed Circuit Board Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing