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  1. Home
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  5. CONDUIT-CABLE-FITTINGS

Conduit & Cable Fittings

Summary: Conduit & Cable Fittings

ProAV Small Parts and Accessories for Commercial Installations
Reliable connections and clean cable management are critical to professional audio-visual systems. Windy City Wire supplies a focused selection of ProAV accessories that pair with our low-voltage wire to help integrators and electrical contractors deliver consistent results across conference rooms, auditoriums, broadcast spaces, digital signage networks, and other commercial AV environments. As a B2B manufacturer serving commercial and industrial customers, we provide product-driven solutions that support efficient installation, signal protection, and long-term system performance.

What You’ll Find in This ProAV Category
This section features small parts and cabling accessories used during AV infrastructure installation and cable routing. These components support conduit terminations, protect conductors at knockouts, and secure cable runs in walls, ceilings, and racks.

  • Insulating bushings and knockout bushings for protecting conductors at metal edges and pass-throughs:
    • 1/2", 3/4", 1", and 2-1/2" plastic insulating bushings
    • Threaded plastic insulating bushings (1/2", 3/4")
    • Rubber/split-open knockout insulating bushings for 1/2" knockout openings
    • Plastic knockout insulating bushings for 1/2", 3/4", and 1-1/2" knockout openings
  • Connectors and fittings to terminate and secure EMT, BX/MC, and flexible metal conduit:
    • 1/2" insulated, zinc-plated steel set screw connector
    • 3/4" uninsulated, zinc-plated steel compression connector
    • 3/4" die-cast zinc screw-in connector with insulated throat
    • 3/8" double-snap straight and duplex connectors for BX/MC cable
  • Clamps, straps, and supports for routing and strain relief:
    • 1" two-piece EMT conduit strut clamp
    • 3/4" universal two-piece EMT or rigid conduit strut clamp
    • 1/2" and 3/4" one-hole conduit straps
    • Stud wall cable supports

Why These Parts Matter in ProAV
Professional AV systems rely on stable mechanical terminations and protected pathways to maintain signal integrity and reduce rework. Using the right bushings, connectors, and supports helps safeguard low-voltage conductors, minimizes EMI risks associated with sharp edges or improper terminations, and streamlines installation in tight spaces and finished environments.

  • Protects conductors at conduit entries and knockout points (insulated throats and bushings)
  • Supports code-compliant best practices for commercial AV installations
  • Speeds up rough-in and trim-out phases with right-sized, application-matched hardware
  • Improves consistency across multi-site rollouts with standardized accessories

Built for Commercial AV Environments
From racks and enclosures to pathway transitions and device terminations, these accessories are designed to meet the demands of commercial AV infrastructure. Options include zinc-plated steel for durability, die-cast zinc for secure mechanical engagement, and plastic or rubber bushings to protect low-voltage cable jackets during pulls and after installation.

  • Sizes commonly used in ProAV: 3/8", 1/2", 3/4", 1", and up to 2-1/2"
  • Connector types: set screw, compression, screw-in, insulated throat, threaded plastic
  • Conduit compatibility: EMT, BX/MC, and rigid applications

How Windy City Wire Adds Value to Your Project
We do not sell services—our focus is on high-quality products and practical solutions. Our ProAV accessories are selected to complement our low-voltage wire portfolio, making it easier to build a complete and consistent bill of materials for commercial AV jobs.

  • Project-ready assortments of frequently used AV installation hardware
  • Consistency and availability that helps simplify procurement across multiple sites
  • Clear specification support for selecting the right connector, bushing, or clamp by size and material
  • B2B-focused fulfillment for integrators, electrical contractors, and distributors

Typical Use Cases

  • Conference rooms and collaboration spaces: clean conduit terminations and cable protection behind displays and at table boxes
  • Auditoriums, training centers, and houses of worship: secure cable pathways over long runs with strut clamps and one-hole straps
  • Broadcast and production spaces: reliable BX/MC terminations with double-snap connectors
  • Digital signage and retail: fast, standardized installations using knockout bushings and insulated throat connectors

Summary: Dependable ProAV Accessories from a Low-Voltage Manufacturer
Choosing Windy City Wire for ProAV small parts means you can source low-voltage wire and the essential accessories that go with it—from 1/2" plastic insulating bushings to 3/4" compression connectors and universal EMT strut clamps—through a single, B2B-focused partner. The result is smoother installation, protected cabling, and a standardized approach that scales from one room to an entire portfolio of facilities.

Next Step
Build your BOM with the sizes and materials your team prefers, then request a quote. If you need help matching a connector or bushing to your conduit type or knockout opening, our team can guide you to the right product solution for your next ProAV project.

Solutions: Conduit & Cable Fittings

Conduit & Cable Fittings for Professional AV
Windy City Wire supports system designers, integrators, and electrical contractors with a full range of small parts that keep low-voltage Pro AV installations protected, organized, and code-compliant. This Conduit & Cable Fittings category includes the everyday essentials—insulating bushings, EMT/rigid connectors, BX/MC connectors, straps, clamps, and stud wall cable supports—that help you build reliable pathways for signal, control, and power-limited circuits in commercial and industrial AV environments.

Where conduit and cable fittings matter in AV integrations
These components are used anywhere AV cabling passes through metal enclosures, transitions into conduit, enters junction or rack boxes, or requires secure support along walls, ceilings, and strut. Proper fittings reduce cable abrasion, maintain bend radius, and support clean cable management that preserves signal integrity in demanding Pro AV deployments, including:

  • Video conferencing and collaboration rooms (camera, mic, DSP, and display cabling)
  • Lecture halls and training centers (projection, interactive displays, assistive listening)
  • Digital signage networks and wayfinding (LED, LCD, media players, control)
  • Broadcast, streaming, and production studios (PTZ, intercom, audio/video tie-lines)
  • Large venues and arenas (scoreboards, distributed audio, IPTV, control networks)
  • Houses of worship (front-of-house, stage patching, distributed video)
  • Command and control rooms (video walls, KVM, AV over IP distribution)
  • Hospitality and retail (background music, signage, POS backhaul, paging)
  • Healthcare (training rooms, telemedicine carts, digital displays)
  • Industrial facilities (process monitoring video, paging, plant-wide PA)

How these small parts support commercial and industrial AV

  • Protect edges and knockouts to prevent jacket damage on low-voltage and control cables
  • Provide secure terminations at enclosures and racks to maintain strain relief
  • Enable neat routing on walls, above ceilings, and on strut for efficient serviceability
  • Support code-compliant installation practices for EMT, rigid, BX/MC, and flexible pathways
  • Help preserve AV signal performance by avoiding abrasion, pinch points, and over-bending

Products and typical use cases

  • Insulating Bushings — Protect conductors and cable jackets as they pass through metal edges and knockouts:
    • Plastic Insulating Bushings in common sizes: 1/2", 3/4", 1", and 2-1/2"
    • Threaded Plastic Insulating Bushings for 1/2" and 3/4" threaded hubs
    • Plastic Knockout Insulating Bushings for 1/2", 3/4", and 1-1/2" knockout openings (e.g., Plastic Knockout Insulating Bushing for 3/4" Knockout, NOW PART #SB8758)
    • Rubber/Split Open Knockout Insulating Bushing for 1/2" openings—ideal for retrofit where the pathway is already populated
  • EMT and Rigid Conduit Connectors — Terminate conduit to boxes and enclosures for solid, code-compliant connections:
    • 1/2" Insulated, Zinc Plated Steel Set Screw Connector for EMT—fast install in dry locations
    • 3/4" Uninsulated, Zinc Plated Steel Compression Connector—robust connection, often preferred in vibration-prone areas
    • 3/4" Die Cast Zinc Screw-In Connector with Insulated Throat—added edge protection at entry points for data bundles
  • BX/MC Cable Connectors — Rapid connections for metal-clad power-limited and support circuits:
    • 3/8" Double-Snap Straight Connector for BX/MC Cable—low-profile termination to junction boxes near racks and displays
    • 3/8" Double-Snap Duplex Connector for BX/MC Cable—run two cables into one entry; useful in dense AV rack layouts
  • Straps, Clamps & Supports — Securely support conduit runs and cable bundles:
    • 1/2" and 3/4" One Hole Conduit Straps—clean wall or stud mounting of EMT
    • 1" and 3/4" Two-Piece EMT Conduit Strut Clamps, plus 3/4" Universal Two Piece EMT or Rigid Conduit Strut Clamp—for trapeze and strut-mounted pathways
    • Stud Wall Cable Supports—organize horizontal runs in framed walls while maintaining separation from power

Application snapshots

  • Conference rooms and collaboration spaces — Use 1/2" or 3/4" plastic insulating bushings at rack and display knockouts, EMT set screw connectors for quick terminations, and stud wall cable supports to maintain clean in-wall pathways from table boxes to displays and codecs.
  • Digital signage corridors — Employ two-piece EMT strut clamps to secure long conduit runs on strut, insulated throat connectors at media player enclosures, and knockout bushings at display junction boxes to protect AV over IP cables.
  • Broadcast and production — Combine compression connectors on EMT for vibration resistance around equipment rooms, duplex MC connectors for power-limited circuits serving racks, and 1" bushings for larger camera and audio snake bundles.
  • Large venue AV — Use heavy-duty strut clamps, 2-1/2" plastic insulating bushings at large rack penetrations, and conduit straps along catwalks to protect and support long-run signaling and intercom cabling.

Selection tips for Pro AV conduit & cable fittings

  1. Match the fitting to the pathway: Set screw for speed in dry areas, compression for added security or vibration, screw-in connectors when space is tight.
  2. Choose insulated throats and plastic bushings wherever low-voltage data, control, or fiber enters metal to reduce abrasion and maintain cable jacket integrity.
  3. Use split or knockout bushings for retrofit scenarios where conductors are already in place.
  4. Size correctly: 1/2" and 3/4" are common for display drops and device boxes; 1" or larger for multi-cable bundles and rack penetrations.
  5. Support properly: One-hole straps for direct-to-stud runs, strut clamps for trapeze systems and long horizontal spans, and stud wall supports for neat in-wall management.

Best practices for code-compliant AV pathways

  • Protect every metal edge and knockout with an insulating bushing to minimize jacket wear on low-voltage cables.
  • Separate power and low-voltage routes and maintain bend radius for category, control, and fiber cables to preserve performance.
  • Use connectors with insulated throats at device boxes and racks for added protection of Pro AV cabling.
  • Follow applicable codes and standards for EMT, rigid, and MC/BX installations and low-voltage circuits (e.g., NEC articles commonly associated with EMT and MC, and power-limited/communications circuits).
  • Plan for serviceability—clear labeling, accessible junctions, and supported pathways reduce downtime and rework.

Working with SmartWire and RackPacks
When you pull labeled SmartWire bundles through EMT protected by plastic insulating bushings and insulated throat connectors, you reduce jacket abrasion and maintain clear identification from end to end. Pairing these fittings with RackPacks helps keep payout controlled at the rack and in the ceiling space, which minimizes twists and snags at connector entry points and speeds installation in commercial AV projects.

Why these details matter to your AV project
Reliable conduit and cable fittings help ensure low-voltage AV systems perform as designed. From signal distribution in a campus-wide AV over IP network to audio DSP and control wiring in a boardroom, the right bushings, connectors, straps, and clamps enable safer, cleaner, and more maintainable installations.

Quick checklist before you order

  • Confirm conduit type and size (1/2", 3/4", 1", or larger) to match connectors and straps
  • Select insulating bushings for all metal pass-throughs and knockouts
  • Choose set screw vs. compression based on environment and vibration
  • Account for special needs: insulated throats for data, duplex MC connectors for dense rack terminations, split bushings for retrofit
  • Plan supports: one-hole straps, stud wall cable supports, and strut clamps to meet spacing and load requirements

Windy City Wire is a B2B partner for commercial and industrial AV projects. Our conduit & cable fittings complement your low voltage wire selections and help you deliver consistent, professional results across conference rooms, campuses, production spaces, and large venues.

Frequently Asked Questions: Conduit & Cable Fittings

  • How do I choose the right insulating or knockout bushing for low-voltage conduit runs?

    Match the bushing to the conduit trade size or the knockout opening: common options include 1/2", 3/4", 1", 1-1/2", and 2-1/2". Use plastic insulating bushings at EMT/rigid terminations to protect AV cable jackets; choose threaded plastic bushings when mating to threaded hubs. For sheet-metal panels, select plastic knockout insulating bushings sized to the KO; for retrofit pulls, a split-open rubber knockout bushing simplifies installation. If cables enter a box through a connector, an insulated-throat connector adds extra abrasion protection. Always verify sizing against the actual conduit or KO and follow local code requirements.

  • What’s the difference between set-screw, compression, and screw-in connectors—and when should I use each?

    Set-screw zinc-plated steel connectors (e.g., 1/2", 3/4") are quick to install and ideal for EMT in dry, indoor ProAV environments. Compression connectors (such as 3/4" uninsulated zinc-plated steel) provide a stronger mechanical bond and better vibration resistance—great for overhead strut, long vertical runs, and equipment rack areas. Screw-in, die-cast zinc connectors with an insulated throat are designed for AC/BX/MC cables entering boxes. For MC/BX whips, use 3/8" double-snap straight or duplex connectors to terminate one or two cables cleanly. Always match the connector type and trade size to the cable/conduit and the knockout.

  • How should I support and secure conduit and cable in walls and on strut for clean ProAV installs?

    Use stud wall cable supports to organize low-voltage bundles, maintain bend radius, and help separate AV from power. On strut, two-piece EMT conduit strut clamps (e.g., 1") and universal two-piece EMT/rigid strut clamps (e.g., 3/4") provide secure, serviceable mounting. For simple surface runs, one-hole conduit straps in common sizes like 1/2" and 3/4" keep conduit tight to the substrate. Pair supports with insulating bushings at every entry/exit point to protect cable jackets and achieve a professional, code-compliant pathway.

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