5/16" x 2-1/4" Snap-Off Closet Bolt with Round Washers and Nickel Nuts

5/16″ × 2-1/4″ Closet Bolt — Snap-Off, Brass

Heavy-duty brass closet bolts designed for securing toilets to the floor flange. The snap-off feature allows for easy adjustment and a clean finished installation once the nut is tightened. Corrosion-resistant brass construction ensures long service life in plumbing environments.

• Product type: Closet bolt (toilet bolt), snap-off style
• Bolt diameter: 5/16 inch (nominal shank size)
• Overall length: 2-1/4 inches
• Head style: Flat/slotted head for secure seating in toilet flange slot
• Snap-off design: Bolt shank scored to break off cleanly above nut level after tightening, leaving a flush finish
• Height (threaded section): ~5/16 inch projection above nut when snapped
• Material: Solid brass (resists rust and corrosion in damp environments)
• Finish: Polished brass — smooth finish to reduce galling and provide corrosion resistance
• Thread type: Standard UNC machine screw threads for 5/16″ bolts (typically 18 TPI)
• Typical kit contents (varies by supplier):
  • Two snap-off closet bolts (5/16″ × 2-1/4″)
  • Two matching brass nuts
  • Two brass or stainless flat washers
  • Two plastic washers for floor protection and sealing (optional in some kits)
• Applications:
  • Securing water closets (toilets) to floor flanges in residential or commercial plumbing installations
  • Use in both new toilet installations and toilet replacement/repair jobs
• Performance & durability:
  • Brass construction resists corrosion and seizing better than steel or zinc-plated bolts
  • Snap-off feature simplifies installation and improves finished appearance
  • Compatible with wax rings and flange hardware for standard toilets
• Installation notes:
  • Insert closet bolt head into flange slot and align vertically before setting toilet
  • Place toilet over bolts, install washer and nut, and tighten evenly
  • After tightening, snap off bolt above nut at scored line to create flush, snag-free finish
  • Do not overtighten — overtightening may crack porcelain toilet base

Technical & Performance Notes

• Brass bolts provide long-term corrosion resistance, especially in bathrooms with high humidity.
• Snap-off style reduces need for hacksaw cutting, making installation cleaner and faster.
• Standard 5/16″ size is compatible with most modern toilet flanges and bases.
• Recommended torque: hand-tighten first, then snug with wrench (approx. 25–30 in-lbs), ensuring toilet base is secure without rocking.