Take advantage of our Ideal Counter Days to unlock additional incentives on Lightning Deals! Find Counter Day >

- Log In
  
  User Name
  
  Password
  
  Remember Me
  
  Forgot Password?
- Register

Home
Services and Solutions
Services
Brands
Promotions
Events
Resources
Locations
About Us
Lighting Center
Log In

Products

Adhesives, Chemicals & Lubricants Conduit, Raceway & Strut Control & Automation Rockwell Automation Data & Communication Electric Vehicle Charging Electrical Fittings Electrical Boxes & Covers Electric Utility & Outside Plant Products Enclosures Fasteners & Hardware Heat, Ventilation & Builder Products Lighting Office & Packaging Supplies Power Distribution Power Sources & Motors Safety Products Solar Products Tools & Instruments Welding & Soldering Wire Termination & Supplies Wire, Cords & Cables Wiring Devices

Adhesives, Chemicals & Lubricants

Adhesives

Anti-Oxidant Joint Compound

Duct Seal Compounds

Electrical Sealing Compounds

Fire Barrier Sealants and Foam

Gasket Sealants

View All

Chemicals

Aerosol Dusters

Anti-Seize

Cleaners & Degreasers

Corrosion Inhibitors

Insecticides

View All

Cleaning Supplies

Paper Products

Rags

Restroom Supplies

Oils & Lubricants

Lubricants

Oils

Paints & Coating

Coating

Paints

Tape & Pads

Corrosion Protection Tapes

Double-Sided Tapes

Duct Tapes

Electrical Color Code Tapes

Mastic Pads

View All

Conduit, Raceway & Strut

Cable Tray & Accessories

Cable Tray

Cable Tray Ladders

Cable Tray Fittings & Accessories

Conduit

Metallic Conduit

Non-Metallic Conduit

Raceway Systems

Overfloor

Raceway Pre-Wired

Surface Raceway

Strut & Accessories

Single-Sided Strut

Double-Sided Strut

Strut Fittings & Accessories

Angles

Rooftop Support Blocks

Wireways, Fittings & Accessories

Wireways

Wire Troughs

Wireway Fittings & Accessories

Wiring Ducts, Fittings & Accessories

Wiring Ducts

Wiring Duct Fittings & Accessories

Control & Automation

Alarms & Signaling

Alarms

Beacons

Combination Light & Sound Devices

Door Holders

Door Openers

View All

Automation Control Connectivity Devices

Bridges

Control System Cable & Connector Accessories

Control System Connection Cables

Control System Passive Distribution Boxes

Control System Receptacles

View All

Contactors & Starters

Contactors

Drive Accessories

Drive Miscellaneous Parts & Accessories

Line and Load Reactors

Line Filters

Motor Drive Keypads & Accessories

Drives

AC Drives

Servo Drives

Machine Safety

Light Curtains

Safety Control Modules

Safety Switches

Motor Controls & Accessories

Contactors & Starters

Encoders

Linear Actuators

Motor Control Parts & Accessories

Passive & Active Devices

Diodes

Pilot Devices

Contact Blocks

Emergency Stop Devices

Indicator Pilot Lights

Joystick Operators

Legend Plates

View All

PLCs & HMI

HMI

PLC

Software

Training & Manuals

Relay & Timers

Relays

Timers

Sensors & Switches

Sensors

Switches

Terminal Blocks & Connectors

Din Rail Terminal Blocks

Panel Mount Terminal Blocks

PCB Pluggable Connectors

PCB Terminal Blocks

Terminal Block Accessories

Signal Conditioners

Signal Isolators & Converters

Rockwell Automation

Cordsets & Field Attachables

Cordsets

Field Attachables

Junctions & Splitters

Miscellaneous Accessories

Raw Cable Spools

View All

Drives

Architecture Class Drives

Component Class Drives

DC Drives

Drive Communications

Drive Input - Line Reactors

View All

Encompass Partners

Prosoft

Spectrum

Graphic Terminals

MobileView

Panel View Plus 6

Panel View Plus 7

PanelView 5000

PanelView Legacy Products

Industrial Computers and Monitors

Industrial Computer Accessories

Industrial Monitors

Integrated Display Computers

Non-Display Computers

Industrial Controls

Contactors

Control Circuit & Load Protection

Lighting Control

Motor Control, IEC

Motor Control, NEMA

View All

Industrial Sensors & Sensor Accessories

Accelerometers

Float Switches

Limit Switches & Accessories

Photoelectric Sensors & Accessories

Pressure Sensors

View All

Motion Controls

Cables & Connectors

Encoders

Linear Mtr/Actuator

Servo Drives

Servo Motors & Actuators

View All

Networks & Communications

Bridge

Cables

ControlNet

Data Highway Plus

DeviceNet

View All

Peripherals

PLC's, DeviceNet, & I/O

ArmorPoint

CompactLogix

ControlLogix

DeviceNet

Flex Devices

View All

PowerMonitor

PowerMonitor Devices

PowerMonitor Accessories

Safety Components

Presence Sensing Safety Devices

Safety Contactors & Relays

Safety Switches

Services

OnSite Services

Remote Support Services

Training Services

Software & Support

Asset Management Software

Automation Software

Computer Based Training

HMI & Visualization

Information Software

View All

Data & Communication

Audio & Video Systems

A/V Receivers

A/V Transmission Extenders

Audio & Video System Accessories

Speakers

Copper Connectivity

A/V Connectors

Connector Components & Accessories

Input/output Connectors

Modular & Ethernet Connectors

Patch Panels

Faceplates & Boxes

Accessories

Faceplates

Surface Mount Boxes

Wall Outlets

Fiber Optic Connectivity

Fiber Optic Adapters

Networking Hardware

Media Converters

Modems & Gateways

Network Interface Cards

Servers

Wired Networking

View All

Racks, Enclosures & Cable Management

Cable Management Panel Accessories

Cable Management Panels

Data Cable Support Systems

Enclosure & Cabinet Accessories

Fiber Optic Enclosures

View All

Security, Video & Surveillance

Intercoms & Paging Systems

Parts & Accessories

Software

Video Cameras

Electric Vehicle Charging

Electric Vehicle Chargers

Electric Vehicle Charger Accessories

Electrical Fittings

Adapters

ENT Adapters

PVC Adapters

Box Spacers

Bushings

Rigid Conduit Bushings

Grounding Bushings

EMT Conduit Bushings

Reducing Bushings

PVC Bushings

View All

Caps & Plugs

Metallic Conduit Plugs

PVC/Plastic Conduit Caps

PVC/Plastic Conduit Plugs

Clamps, Hangers, Straps & Supports

Beam Clamps

Conduit Clips & Clamps

Conduit Repair Kits

Conduit Spacers

Conduit Supports

View All

Combination Fittings

EMT To Flex. Combination Fittings

EMT To Liquid Tight Combination Fittings

EMT To Rigid Combination Fittings

Rigid To Flex. Combination Fittings

Rigid To Liquid Tight Combination Fittings

Concrete Inserts & Sleeves

Rigid Concrete Inserts

Conduit Bodies, Covers & Gaskets

Metallic Conduit Bodies, Covers & Gaskets

PVC Conduit Bodies, Covers & Gaskets

PVC-Coated Conduit Bodies, Covers & Gaskets

Conduit Hubs

Rigid Conduit Hubs

PVC Coated Rigid Conduit Hubs

Conduit Locknuts

Conduit Plugs

Conduit Unions

Conduit Washers

Reducing Washers

Sealing Washers

Connectors

EMT Connectors

Colored EMT Connectors

Flexible Metallic Conduit (FMC) Connectors

Flexible Non-Metallic Conduit (FNMC) Connectors

Liquidtight Connectors

View All

Cable Grips / Cord Connectors

Strain Relief Grips

Support Grips

Pulling Grips

Cord Connectors - Metallic

Cord Connectors - Non-Metallic

View All

Couplings

EMT Couplings

Colored EMT Couplings

ENT Couplings

Flexible Metallic Conduit Couplings

PVC Couplings

View All

Elbows

EMT Elbows

Rigid Elbows

PVC Elbows

PVC Coated Elbows

End Bells

Expansion Fittings

EMT Expansion Fittings

Rigid Expansion Fittings

PVC Expansion Fittings

Hazardous Location Fittings

Cable Glands

Capped Pulling Elbows

Conduit Adapters

Conduit Couplings

Conduit Elbows

View All

Knockout Seals & Plugs

Meter Risers

Nipples / Offsets

Closed Nipples

Straight Nipples

Chase Nipples

Offset Nipples

Running Thread

View All

Pennies

Service Entrance Fittings

Mast Kits

Service Entrance Caps

Sill Plates

Wedge Clamps

Wireholders

Stubs

Electrical Boxes & Covers

FS / FD Boxes & Covers

Metallic FS / FD Boxes

Metallic FS / FD Box Covers

Non-Metallic FS / FD Boxes

Non-Metallic FS / FD Box Covers

PVC Coated FS / FD Boxes

Communication & Low Voltage

Countertop Boxes

Electrical Box Extension & Brackets

Electrical Box Brackets

Electrical Box Extensions

Electrical Box Partitions

Fire Rated Poke Through Boxes

Floor Boxes, Covers & Carpet Flanges

Floor Boxes

Floor Box Covers

Flanges

Floor Box Accessories

Junction Boxes & Covers

Junction Boxes

Junction Box Covers & Accessories

Masonry Boxes

Octagon/Round Boxes & Covers

Metallic Octagon Boxes

Metallic Round Boxes

Metallic Round/Octagon Covers

Non-Metallic Octagon Boxes

Non-Metallic Round Boxes

View All

Outlet/Switch Boxes & Covers

Metallic Outlet/Switch Boxes

Metallic Outlet/Switch Covers

Non-Metallic Outlet/Switch Boxes

Non-Metallic Outlet/Switch Covers

Square Boxes & Covers

4" Square Boxes

4" Square Surface Covers

4-11/16" Square Boxes

4-11/16" Square Surface Covers

TV / Specialty Boxes

Utility Enclosures & Covers

Utility Enclosures

Utility Enclosure Covers

Vaportight / Airtight Boxes

Weatherproof Boxes, Covers, & Accessories

Weatherproof Boxes

Weatherproof Covers

Weatherproof Accessories

Box Hardware & Accessories

Gaskets

Grounding Devices & Accessories

Hangers

Supports

Electric Utility & Outside Plant Products

Arrestors & Cutouts

Arresters

Utility Connectors

Distribution/Transmission

Grounding Products

Utility Hardware

Mounts & Brackets

Wireholders

Utility Insulators

Standoff & Bus Support Insulators

Utility Poles & Supports

Pole Accessories

Enclosures

Circuit Breaker Enclosures

Covers, Backplates & Accessories

Current Transformer Cabinets

Disconnect Type Enclosures

Metallic

Non-Metallic

Door Stop Kits

Electrical Console & Consolet Enclosure

Enclosure Data Pockets

Enclosure Interface Ports

Enclosure Panels

Enclosure Pedestal Columns & Bases

Explosion-Proof Enclosures

Metallic

Floor Mount Enclosures

Metallic

Non-Metallic

HMI Enclosures

Latch-Lock & Handles

Mounting Feet & Casters

Pilot Device Enclosures

Metallic

Non-Metallic

Telephone Cabinets

Thermal Management

Coolers & Air Conditioners

Enclosure Dehumidifiers

Enclosure Heaters

Enclosure Thermal Controls

Fan Parts & Accessories

View All

Underground Enclosures & Boxes

Non-Metallic

Wall Mount Enclosures

Metallic

Non-Metallic

Metering Cabinets

Pull Boxes

Splitter Boxes

Splitter Trough Blocks

Splitter Troughs

Fasteners & Hardware

Assortment Kits

Anchor Kit

Bolt, Screw & Stud Kit

Nut & Washer Kit

Other Fastener Kit

Other Hardware Kit

Chain, Cable, Rope & Accessories

Chains

Fittings & Accessories

Ropes

Tie Wires

Tie-Down Straps

Fasteners

Bolts, Screws & Studs

Nuts & Washers

Hardware

Anchors

Braces and Brackets

Clamps

Magnets

Nail Plates

View All

Hose Fittings

Hose Clamps

Miscellaneous Fasteners

Grommets

Powder Fastening Products

Rivets

Staples

PVF (Pipes, Valves, Fittings)

Valves

Pipe Hanger

Tubing Fittings

Tube Fittings

Heat, Ventilation & Builder Products

Air Circulators

Air Conditioner Parts & Accessories

Air Conditioners

Axial Fans

Blowers, Motors & Accessories

Ceiling Fans

View All

Central Vacuum Systems

Central Vacuum Packages & Kits

Hoses & Accessories

Inlets & Fittings

Power Units

Tools & Attachments

View All

Controls & Thermostats

Fan Controls & Switches

Non-Programmable Thermostats

Programmable Thermostats

Thermostat Accessories

Doorbells & Chime Kits

Ducting & Venting

Duct Clamps

Duct Fittings

Flexible Ducts

Rigid Ducts

Roof Flashings

View All

Electric Heating

Convection Heaters

Fan Forced Heaters

Floor Warming

Heater Parts & Accessories

Ice & Snow Melting

View All

Exhaust & Ventilation

Air Filters

Attic Ventilators

Bathroom Fan

Housing & Grill Assembly

In-Line Ventilation Fans

View All

Lighting

Ballasts, Starters & Capacitors

Ballast Accessories

Ballast Kits

Capacitors

Fluorescent Ballasts

HID Ballast Igniters

View All

Fixtures

Emergency Lighting & Exit Sign

Hanging Chains & Stems

Hazardous Location & Vapor Tight Fixtures

Indoor Lighting Fixtures

Outdoor Lighting Fixtures

View All

Flashlights & Multi-Location Lights

Combo Flashlights

Flashlights & Multi-Location Light Accessories

Handheld Flashlights

Headlamps

Strip/Rope Lights

View All

Lamps

Compact Fluorescent Lamp (CFL)

Fluorescent Tubes

Halogen Bulbs

HID Bulbs

Incandescent Bulbs

View All

Lighting Controls & Accessories

Dimming Modules

Lighting Control Switches

Load Controllers

Motion Sensors

Parts & Accessories

View All

Office & Packaging Supplies

Office Supplies

Clocks

Computer Equipment

Food and Beverage

Markers

Power Distribution

Busway & Accessories

Bus Plugs

Busway Accessories

Busway Fittings

Busways

Circuit Breakers

Low Voltage Power Circuit Breakers

Medium Voltage Power Circuit Breakers

Miniature Circuit Breakers

Remote Operated Circuit Breakers

Residential Circuit Breakers

View All

Disconnect & Safety Switches

Fusible Safety Switches

Non-Fusible Safety Switches

Safety Switch Accessories

Transfer Switches

Fuses

Automotive Fuses

British & IEC Fuses

Current-Limiting Fuses

Fuse Accessories

Fuse Blocks & Holders

View All

Grounding & Bonding Products

Busbars

Busbar Spacers & Accessories

Flexible Braid Connectors

Ground Rods

Ground/Neutral Bars

View All

Load Centers

Load Center Accessories

Load Center Covers

Single Phase Convertible Load Centers

Single Phase Main Breaker Load Centers

Single Phase Main Lug Load Centers

View All

Metering

Meter Parts & Accessories

Metering Sockets

Meters

Terminal/Tap Boxes

Panelboards & Accessories

Main Breaker Kits

Main Lug Kits

Panelboard Enclosures

Panelboard Interiors

Panelboard Parts & Accessories

View All

Surge Protection

Circuit Breaker SPD

External Load Center SPD

Switchboards & Accessories

Switchboards

Terminal Blocks, Taps & Strips

Terminal Block Accessories

Terminal Block Marker

Terminal Blocks

Terminal Strips

Transformers

Buck Boost Transformers

Constant Voltage Transformers

Control Power Transformers

Current Transformers

Encapsulated Transformers

View All

Power Sources & Motors

Batteries & Chargers

Battery Accessories

Non-Rechargeable Batteries

Product-Specific Batteries

Rechargeable Batteries

Generators & Accessories

Inverter Generators

Portable Generators

Standby Generators

Generator Cable

Generator Accessories

Motors & Accessories

Motor Accessories

Motors

Power Supplies

DC Power Supplies

Power Conditioners

Power Inverters

Uninterruptible Power Supplies

Safety Products

Electrical Safety

Insulating Blankets

Fire Safety

Alarms and Suppression Systems

Carbon Monoxide Alarms

CO & Smoke Combination Alarms

Fire Barriers

Firestop and Fire Protection System Accessories

View All

First Aid & Wound Care

Face Masks

First Aid Kits

Insect and Pest Control

Insect and Animal Repellents

Lockout/Tagout

Cable Lockouts

Electrical Lockouts

Lockout Hasps

Lockout Kits

Lockout Tags

View All

Machine Safety

Safety Edges

Safety Mat Trim Kits

Safety Mats

Personal Protective Equipment

Boots, Shoes, & Foot Protection

Ergonomic Support Aids

Eye Protection & Accessories

Fall Protection

Gloves & Hand Protection

View All

Coolers, Tumblers & Hydration

Coolers & Accessories

Bottled Water & Sports Drinks

Cup Dispensers & Disposable Cups

Drink Tumblers

Safety Apparel

Flame Resistant & Arc Flash Clothing

High-Visibility Clothing

Workwear

Safety Signs & Labels

Label Printers

Labels and Markers

Signs and Tags

Safety Storage Cabinets & Containers

Key Storage

Traffic Control Products

Barriers and Safety Tapes

Solar Products

Balance of Systems

Combiner Box

Connectors

Pass Through Boxes

Surge Protection

System Monitoring

View All

Inverters

Accessories

Cloud Connect Kits

Microinverters

Optimizer

Single Phase

Off Grid

Communication

PV Modules

60-Cell Panels

72-Cell Panels

Racking

Ballasted

Clamp

Grounding

Ground Mounts

Hardware

View All

Tools

Racking Tools

Photovoltaic Wires (PV)

Tools & Instruments

Abrasives

Abrasive Rolls

Brushes

Handheld Brushes

Cleaning Tools

Vacuum Cleaners

Dispensing Tools

Dispensing Equipment Accessories

Fish Tapes & Conduit Tools

Conduit Bender Accessories

Conduit Heaters

Fish & Glow Rods

Fish Tape Accessories

Fish Tapes

View All

Hand Tools

Automotive Specialty

Bottle Openers

Cable Tie Tools

Caulking Gun

Digging & Destruction Tools

View All

Ladders, Platforms and Scaffolding

Ladders

Metal Forming Tools

Hand Notchers

Power Tools & Attachments

Attachments

Corded Power Tools

Cordless Power Tools

Gas Power Tools

Hydraulic Tools

View All

Storage & Material Handling

Casters & Wheels

Hose and Tubing

Lifting & Rigging

Storage

Testing Instruments

Circuit Tracers

Clamp Meters

Distance Meters

Equipment Cases

GFCI/Receptacle Circuit Testers

View All

Tool Kits & Reference Manuals

Reference Manuals

Tool Kits

Workholding

Clamping Hardware

Welding & Soldering

Exothermic Welding

Controller Accessories

Controllers

Welding Accessories

Welding Cable Connectors, Grounds, & Accessories

Cable Lugs

Welding Consumables

Weld Materials

Welding Supplies

Flint Ignitors

Welding Links & Clamps

Wire Termination & Supplies

Bundling & Securing

Cable Clips, Clamps & Straps

Cable Hooks, Hangers & Stackers

Cable Staples

Cable Tie Mounting Bases

Cable Ties

View All

Cold & Heat Shrink

Cold Shrink

Heat Shrink Boots

Heat Shrink Kits

Heat Shrink Tubing

Grounding Products

Grounding Bridges

Grounding Clips

Lugs & Connectors

Compression Lugs

Compression Sleeves

Insulation Piercing Connectors

Mechanical Lugs

Multi-Tap Connectors

View All

Marking & Labeling

Heat Shrink Wire Markers

Label Printers

Printer Label Cartridges

Wire Marker Dispensers

Wire Markers

Small Crimp & Wire Connectors

Butt Connectors

Crimp Connectors

Crimp Contacts

Disconnects

Ferrules

View All

Splicing & Terminating Kits

Resin Splices

Splice Kits

Welded Connections

Molds - Cable to Cable

Molds - Cable to Ground

Molds - Cable to Surface

Wire, Cords & Cables

Aluminum Building Wires & Cables

RHH/RHW/USE Underground Service Entrance Cables

SER Service Entrance Cables

SEU Service Entrance Cables

UD Underground Distribution Cables

URD Underground Rural Distribution Cables

View All

Copper Building Wires & Cables

Bare Copper Wire

Heating Cables

NM Non-Metallic Sheathed Cables

Photovoltaic Wires (PV)

RHH/RHW/USE Underground Service Entrance Cables

View All

DataComm & Low Voltage Cable

Fire Alarm Cables

Security Wires

Thermostat Wires

Voice, Data & Video Cables

Extension Cords, Cord Reels & Portable Boxes

Appliance / Power Supply Cords

Cord Reels

Indoor & Outdoor Extension Cords

In-Line GFCI Cords

Portable Boxes

View All

Flexible & Portable Cords

Bus Drop Cable

SJE/SJEO/SJEOO/SJEW/SJEOOW Portable Cords

SJO/SJOOW/SJEOW Portable Cord

SJT/SJTW/SJTOW/SJTOOW Portable Cords

SO/SOW/SOOW Portable Cord

View All

Hook-Up, Lead & High Temperature Wires

MTW Machine Tool Wires

TGGT High Temperature Wires

Metal Clad & Armored Cables

Aluminum AC Cables

Aluminum MC Cables

Fire Alarm MC Cables

HCFC Health Care Facilities MC Cables

PCS Power & Control/Signal MC Cables

View All

Tray Cables & Instrumentation Cables

PLTC Power-Limited Tray Cables

Tray Cables-600V

VNTC Vinyl Nylon Tray Cables

Wiring Devices

Combination Devices

Receptacle / Light

Receptacle / Receptacle

Switch / Light

Switch / Receptacle

Switch / Sensor

View All

Daylighting Controls

Fixture Mount

Recessed Mount

Wall Mount

Daylighting Control Accessories

Occupancy & Vacancy Sensors

Ceiling Mount

Fixture Mount

Wall Mount

Wireless Sensors

Accessories

Plugs & Connectors

Flanged Devices

Pin & Sleeve Devices

Single Pole Devices

Straight Blade Devices

Twist Lock Devices

View All

Power Strips & Multi-Outlet Converters

Converters & Adapters

Power Column & Poles

Power Strips

Surge Protective Devices

Surge Protective Device Accessories

Receptacles

GFCI & AFCI

Pin & Sleeve

Receptacle & Switch Wiring Modules

Receptacle Accessories

Single Pole Female Receptacles

View All

Switches

Appliance Switches

Nightlights

Wall Switches

Wall & Switch Plates

Aluminum Wall Plates

Metal Wall Plates

Nylon/Plastic Wall Plates

Stainless Steel Wall Plates

Weatherproof / Dustproof Wall Plates

View All
Services
Brands
Promotions
Events
Resources
Locations
About Us
Lighting Center

Manage Cookies

We use essential cookies to make our site work. With your consent, we may also use non-essential cookies to improve user experience and analyze website traffic. By clicking “Accept All,” you agree to our website's cookie use as described in our Cookie Policy, or you can modify your preferences before proceeding.

Necessary Analytics Preferences Marketing

Knockout Seals & Plugs

Filters (1)

Categories

< Return to Electrical Fittings
Knockout Seals & Plugs (1)

More Filters

3 Inch (1)
1/2 Inch (8)
3/4 Inch (8)
1 Inch (5)
1-1/4 Inch (4)
1-1/2 Inch (4)
2 Inch (4)
4 Inch (1)
- 5 Inch (1)

1 Products found 1 of 1

Results per page

Trade Size: 3 Inch

Product image for Steel Electric Products Co. 537M 3 Inch Steel Threaded Rigid/IMC Penny

Steel Electric Products Co. 537M 3 Inch Steel Threaded Rigid/IMC Penny

Manufacturer: Steel Electric Products

Catalog #: 537M

NorthEast Part #: 99895

$581.50/c (100 ea)

ea

Compare

1 Products found 1 of 1

Results per page

Compare

Customer Tools

Contact Us
(800) 897-1769
After Hours Emergency Access
Credit App
Mobile App
Subscribe
Manage Cookies

Company Info

Careers
About
Terms & Conditions
Privacy Policy

Social

Rockwell Authorized Service Provider

Rockwell Authorized Service Provider