One pack / 400 PCS — 1749221 4Hole Rectangular Connector Shell Plugs Key benefits Bulk supply: 400 identical 4hole shell plugs in a single pack for consistent inventory and reduced reordering. Protects contacts and housings: Designed to plug unused cavities, prevent contamination, and reduce damage to connector openings during handling, assembly, or storage. Quick to install and remove: Simple pushfit design enables fast assembly line use and easy access for service or rework. Versatile application: Works wherever a 4hole rectangular connector shell plug is required for sealing, insulating, or protecting connector cavities. What this product is Model: 1749221 Type: 4hole rectangular connector shell plugs Quantity: 1 pack = 400 pieces Purpose: Shell plugs for rectangular 4cavity connectors to protect or block connector openings Key attributes Functionality: Blocks unused cavities, protects mating faces from dust and debris, and helps maintain connector integrity during assembly and storage. Compatibility: Intended for use with rectangular connectors that accept the 1749221 style 4hole shell plug. Verify connector series and cavity layout for proper fit. Size/Configuration: Fourhole / fourcavity rectangular plug configuration as specified by model 1749221. Handling and performance: Suitable for repeated insertion and removal in typical assembly and maintenance scenarios; provides a secure, lowprofile seal for connector openings. Typical applications Cable and harness manufacturing: Use on wiring harnesses and assemblies to protect unused cavities during production, testing, and routing. Electronics and prototyping: Temporarily plug unused connector cavities to prevent contamination and accidental shorting while components are serviced or tested. Storage and transport: Protect connector openings on boards, assemblies, or loose connectors during and storage to reduce the risk of damage or debris ingress. Why customers choose this pack Large quantity for production environments or shops that require consistent, onhand supplies. The 1749221 designation ensures you receive the specific 4hole rectangular plug configuration needed for compatible connector systems. Reduces downtime and waste by keeping connector cavities protected throughout manufacturing, testing, and . Usage tips Confirm fit: Check connector series and cavity dimensions to ensure compatibility with the 1749221 plug. Insert carefully: Push until seated evenly to avoid misalignment of the plug with the connector face. Remove with care: Use a small tool or finger pull as appropriate to avoid damage to the plug or mating connector. Package contents One pack containing 400 pieces of 1749221 4hole rectangular connector shell plugs. For production, maintenance, or prototyping environments that need reliable protection for 4cavity rectangular connectors, this 400piece pack of 1749221 shell plugs provides a practical, readytouse solution.