411 WORKS 1" Steel Cups with Steel Bungs

The 411 WORKS 1" Steel Cups with Steel Bungs are precision-machined fabrication components designed for custom automotive, motorsport, and general fabrication projects. Both the cups and bungs are manufactured in-house in the USA on HAAS CNC machines using high-quality North American 1018 steel. Three cup configurations and four bung thread options allow fabricators to select the combination that best suits their project. Both the 1" cups and matching steel bungs measure an actual 0.90" in diameter for consistent fitment during fabrication. 1018 Steel Construction: Both the cups and bungs are manufactured from high-quality North American 1018 steel. Three Cup Configurations: Choose from Deep, Shallow, or Scallop cup designs depending on the mounting and fabrication requirements of your project. Four Bung Thread Options: Available with M6x1.0, M8x1.25, 1/4-20, or 5/16-18 threads. 0.90-Inch Actual Diameter: Both the 1" cups and matching bungs measure an actual 0.90" in diameter. Matched Fabrication Components: The cup and bung combination provides a purpose-built starting point for creating custom mounting solutions. CNC-Machined Construction: Precision machined in-house using HAAS CNC equipment for consistent dimensions and quality. Made in the USA: Manufactured in-house by 411 WORKS using North American-sourced 1018 steel. Available Cup Options Deep Shallow Scallop Available Bung Thread Options M6x1.0 M8x1.25 1/4-20 5/16-18 What's Included (1) 411 WORKS 1" Steel Cup in selected configuration (1) 411 WORKS 1" Steel Bung in selected thread configuration Vehicle Fitment Universal fabrication application Suitable for custom automotive and motorsport fabrication Final compatibility depends on the mounting location, hardware requirements, dimensions, and intended application Specifications Brand: 411 WORKS Product Type: Fabrication Cup and Bung Cup Material: 1018 Steel Bung Material: 1018 Steel Cup Diameter: 0.90" Bung Diameter: 0.90" Cup Options: Deep / Shallow / Scallop Bung Thread Options: M6x1.0 / M8x1.25 / 1/4-20 / 5/16-18 Manufacturing Process: CNC Machined CNC Equipment: HAAS Material Origin: North America Manufacturing Location: USA Fitment: Universal Spec Drawings M6 Deep Cup Spec Drawing M8 Deep Cup Spec Drawing M6 Shallow Cup Spec Drawing M8 Shallow Cup Spec Drawing Bung Spec Drawing Important Notes This product includes one cup and one steel bung in the selected configurations. This is a universal fabrication product and is not vehicle specific. Select Deep, Shallow, or Scallop for the cup configuration. Select M6x1.0, M8x1.25, 1/4-20, or 5/16-18 for the bung thread. Both the 1" cup and bung have an actual outside diameter of 0.90". Specification drawings are provided for the Deep and Shallow cup configurations and the bung. Verify dimensions, thread requirements, hardware, mounting location, and clearance before beginning fabrication. Welding or additional fabrication is required depending on the application. Use appropriate welding procedures for 1018 steel. Professional fabrication is recommended for structural, suspension, steering, or other safety-critical applications. Why Choose 411 WORKS? 411 WORKS manufactures its cups and bungs in-house using HAAS CNC equipment with an emphasis on precision, quality, and reliability. Both components are machined from North American 1018 steel, giving fabricators a matched set of components for custom mounting and fabrication projects. With three cup configurations and four bung thread options, the 411 WORKS 1" Steel Cups with Steel Bungs provide multiple combinations for custom automotive and motorsport fabrication.