Stainless Steel Tumble Bolt for 2-Dog & 4-Dog Raised Bolt Hatches (Model #DB-TMBL-SS)

Stainless Steel Tumble Bolt for 2-Dog & 4-Dog Raised Bolt Hatches (Model #DB-TMBL-SS)

The Model #DB-TMBL-SS is a heavy-duty, marine-grade replacement stainless steel tumble bolt (swing bolt) assembly engineered specifically for high-integrity perimeter securement on 2-dog and 4-dog raised commercial hatches. Machined from premium 316 structural stainless steel, this pivoting fastener swings smoothly into notched cover plate slots to deliver unyielding perimeter clamping force. The material's exceptional tensile strength allows it to absorb extreme shear stresses and heavy green water loading while maintaining its structural profile over long service lifecycles.

Key Features

  • High-Tensile 316 Stainless Steel: Delivers maximum load-bearing capability and extreme structural resistance to bending, deformation, and high hydrostatic pressures.
  • Ultimate Saltwater Resistance: Exceptional defense against marine pitting, crevice corrosion, and rust staining on exposed working decks.
  • Precision-Machined Eyelet Pivot: Engineered with exact tolerances to guarantee smooth, unbinding mechanical swing operation during rapid tank access or closure cycles.

Other Applications:

  • Watertight Commercial Doors: Many quick-acting or individually dogged interior and exterior marine doors use these exact 5/8" tumble bolts along the door frame perimeter to clamp the door blade shut.
  • Heavy Deck Storage Lockers: Large, weatherproof steel boxes welded onto work decks (used for storing heavy rigging gear, anchors, or safety equipment) utilize tumble bolts to hold the heavy lids secure in high seas.
  • Machinery Guard Covers & Equipment Shrouds: Heavy-duty industrial enclosures in the engine room or on winch machinery flats use tumble bolts so mechanics can quickly swing the safety guards open for servicing without misplacing loose bolts.
  • Large Sea Chests & Filter Strainers: While smaller ones use the 1/2" size, massive raw-water sea strainers and filtration chest lids use these heavy 5/8" bronze or stainless bolts to maintain tight seals under high vacuum pressure.