3921 Series Decorative Knob Surface Bolts

3921 Series Decorative Knob Surface Bolts

Trimco’s 3921 Series Decorative Knob Surface Bolts carry a classical design and are offered in various architectural finishes. With multiple standard size and strike options, as well as customization capabilities, these surface bolts are flexible enough for a wide range of applications while maintaining their durability.

  • Healthy Hardware
  • Master Craft

  • Solid bronze or brass construction.
  • Available in various architectural finishes.
  • 8" 12" 28" and 24" standard lengths.
  • Multiple strike options for maximum flexibility.
  • Custom options available.

  • 3921-8 8" Heavy Duty Surface Bolt Decorative Knob
  • 3921-12 12" Heavy Duty Surface Bolt Decorative Knob
  • 3921-18 18" Heavy Duty Surface Bolt Decorative Knob
  • 3921-24 24" Heavy Duty Surface Bolt Decorative Knob

  • 606 Satin Brass, Clear Coated
  • 612 Satin Bronze, Clear Coated
  • 613 Dark Oxidized Satin Bronze, Oil Rubbed
  • 625 Bright Chrome Plated
  • 626 Satin Chrome Plated
  • 630E Stainless Steel Equivalent
  • 706CU Sterose – CuVerro Alloy (upon request)

  • Commercial & Industrial Buildings
  • Government & Military Facilities
  • Hospitality
  • Multifamily & Mixed-Use
  • Office Buildings

  • ADA