Bridgeport Fittings Galvanized Steel Reducing Washers 3-1/2" with Raised Flanges for Knockout Hole Reduction
Professional knockout hole reduction solution for electrical enclosures
Bridgeport Fittings Galvanized Steel Reducing Washers provide reliable knockout hole size reduction for electrical boxes and enclosures. These 3-1/2" washers feature galvanized steel construction for corrosion protection and raised flanges for positive seating in knockout holes. Used in pairs, these washers deliver professional-grade performance for electrical installations requiring precise hole sizing.
Professional Features & Benefits
- Galvanized Steel Construction: Provides superior corrosion protection for long-term durability in any environment
- Raised Flange Design: Ensures positive seating in knockout holes for secure, professional installation
- 3-1/2" Size: Accommodates specific knockout hole reduction requirements for electrical enclosures
- Pair Application: Designed to work in pairs for effective knockout hole size reduction
- UL Listed: Meets UL-514B standards for electrical safety and performance compliance
- CSA Certified: Approved under CSA file LR39354 for Canadian electrical applications
- NEMA FB-1 Rating: Meets professional electrical enclosure fitting standards
Technical Specifications
- Country Of Origin: United States
- Csa File Number: LR39354
- Department: Electrical
- Dimensions A: 4/1/02
- Dimensions B: 8-Jul
- Dimensions C: 3.5
- Division: Electrical H1
- Federal Specification Number: A-A-50553
- Field Application: Galvanized steel reducing washers used in pairs to reduce size of knockout holes in box or enclosur
- Galvanized Steel: The washer is made of galvanized steel which provides corrosion protection for long-term use in any
- Nema Rating: FB-1
- Nema Standard: FB-1
- Positive Seating: The galvanized steel washers have raised flanges that allow for positive seating in the knockout
- Primary Materials: Steel
- Product Finish: Galvanized
- Product Material: Steel
- Product Size: 3-1/2"
- Reduce Knockout Hole Size: Reducing washers are used in pairs to reduce the size of knockout holes
- Standard Package Quantity: 25
- Sub Division: Electrical-E H2
- Ul File: E11259
- Ul File Number: E11259
- Ul Standard: UL-514B
- Unspsc: 31161809
Installation & Operation
- Mount the washers in pairs at the knockout hole location with appropriate clearance and access for connections.
- Position the first washer on the interior side of the enclosure at the knockout hole.
- Install the second washer on the exterior side according to the manufacturer's pairing instructions.
- Ensure raised flanges seat properly in the knockout hole for secure positioning.
- Verify proper hole size reduction and secure fit before proceeding with electrical connections.
- Complete final inspection following applicable electrical installation standards.
Professional Applications
- Electrical Panel Modifications
- Commercial Electrical Enclosures
- Industrial Control Boxes
- Residential Electrical Panels
- Utility Meter Enclosures
- Electrical Equipment Housings
- Professional Electrical Installations
Why Choose Bridgeport Fittings Quality?
Bridgeport Fittings delivers reliable electrical components with UL-514B listing and CSA certification for professional compliance. The galvanized steel construction and NEMA FB-1 rating ensure long-term durability and corrosion resistance for demanding electrical applications.
Manufacturer Resources
Product Specs
- Country Of Origin:
- United States
- Csa File Number:
- LR39354
- Department:
- Electrical
- Dimensions A:
- 4/1/02
- Dimensions B:
- 8-Jul
- Dimensions C:
- 3.5
- Division:
- Electrical H1
- Federal Specification Number:
- A-A-50553
- Field Application:
- Galvanized steel reducing washers used in pairs to reduce size of knockout holes in box or enclosur
- Galvanized Steel:
- The washer is made of galvanized steel which provides corrosion protection for long-term use in any
- Nema Rating:
- FB-1
- Nema Standard:
- FB-1
- Positive Seating:
- The galvanized steel washers have raised flanges that allow for positive seating in the knockout
- Primary Materials:
- Steel
- Product Finish:
- Galvanized
- Product Material:
- Steel
- Product Size:
- 3-1/2"
- Reduce Knockout Hole Size:
- Reducing washers are used in pairs to reduce the size of knockout holes
- Standard Package Quantity:
- 25
- Sub Division:
- Electrical-E H2
- Ul File:
- E11259
- Ul File Number:
- E11259
- Ul Standard:
- UL-514B
- Unspsc:
- 31161809