Includes
Door Frames; Window Frames; Window Sashes; Eave Troughs (gutters); Gratings; Grilles, Shutters; Fixed Fire Escapes; Mounted Partitions.

Excludes
Plumbing and Associated Components such as Sinks; Wallboard and Items Classified as Furniture.

Notes
Items specified as Wooden are classified in FSC 5520.

Possible NAICS Codes
326122 – Plastics Pipe and Pipe Fitting Manufacturing
444180 – Other Building Material Dealers
332321 – Metal Window and Door Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332311 – Prefabricated Metal Building and Component Manufacturing
321992 – Prefabricated Wood Building Manufacturing
236220 – Commercial and Institutional Building Construction
238290 – Other Building Equipment Contractors
332510 – Hardware Manufacturing

Includes
Ball Bearings; Roller Bearings: Balls; Races.

Excludes
Plain Bearings (FSC 3120); Jewel Bearings (FSC 3120).

Notes
This class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Possible NAICS Codes
332991 – Ball and Roller Bearing Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
336411 – Aircraft Manufacturing
336412 – Aircraft Engine and Engine Parts Manufacturing
333618 – Other Engine Equipment Manufacturing
333998 – All Other Miscellaneous General Purpose Machinery Manufacturing
331523 – Nonferrous Metal Die-Casting Foundries

Includes
Aircraft Arresting Barriers.

Excludes
Airport Runway Marker Lights (see FSC Class 6220).

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
488190 – Other Support Activities for Air Transportation
332312 – Fabricated Structural Metal Manufacturing
313210 – Broadwoven Fabric Mills
333995 – Fluid Power Cylinder and Actuator Manufacturing
339999 – All Other Miscellaneous Manufacturing
332912 – Fluid Power Valve and Hose Fitting Manufacturing