Elevator Bolts Manufacturer
MT.BOLTS manufactures Elevator Bolts, which are externally threaded fasteners with a large, flat countersunk or round head and a square neck beneath the head to prevent rotation during tightening. Originally developed for use in conveyor and elevator systems, these bolts are ideal for applications requiring a wide bearing surface to minimize pull-through in soft materials like wood, rubber, and belts. MT.BOLTS provides elevator bolts in various materials, dimensions, and standards to meet the demands of bulk material handling, agricultural equipment, and industrial systems.
- System of Measurement:
Metric (M6–M20) | Imperial (1/4″ to 3/4″) - Length Range:
- Metric: 20 mm to 150 mm
- Imperial: 0.75″ to 6″
- Thread Pitch:
Metric (Coarse) | UNC - Thread Type:
Typically partially threaded for gripping strength - Head Type:
- Flat Countersunk Head
- Shallow Mushroom Head
- Large Diameter Round Head (DIN 15237 style)
- Finish Options:
Plain, zinc-plated, hot-dip galvanized, black oxide, passivated, or custom coatings - Standards:
- DIN 15237 – Elevator bolts for bucket elevators
- ASME B18.5 – Round Head Bolts with square neck (adapted for elevator use)
- Custom / OEM Standards – Available for specialized industrial systems
Elevator Bolts Material Types
MT.BOLTS supplies carbon steel, stainless steel, duplex steel, and nickel-based alloy Elevator Bolts, meeting the demanding requirements of chemical, marine, and high-temperature environments, compliant with various international standards.
| Material Category | Common Grades/Models | Description |
| Carbon Steel | ASTM A307, A325, A490 | High strength and cost-effective, suitable for general structures; requires anti-corrosion coating. |
| Stainless Steel | 304 (A2), 316 (A4), 321, 410 | Excellent corrosion resistance; widely used in food, chemical, and construction industries |
| Duplex Stainless Steel | UNS S31803/S32205 (F51), UNS S32750 (F53) | High strength with superior chloride corrosion resistance; used in seawater, petrochemical, and paper industries |
| Monel Alloys | Monel 400, Monel K500 | Excellent seawater corrosion resistance and mechanical strength; used in marine engineering and pump systems |
| Hastelloy Alloys | Hastelloy C276, C22, B2, X | Excellent resistance to strong acids and oxidizing media; widely used in chemical equipment and flue gas desulfurization |
| Inconel Alloys | Inconel 600, 625, 718 | Resistant to high temperature, pressure, and corrosion; used in heat exchangers, aerospace, and nuclear industries |
| Incoloy Alloys | Incoloy 800, 825, 925 | Ideal for high-temperature acidic environments; widely used in petroleum refining and heat treating systems |
| Nickel Alloys | Nickel 200, 201 | Pure or high-nickel alloys with excellent conductivity and alkali resistance; used in electronics and chemical applications |
Elevator Bolts System of Measurement
- Metric Sizes: M6 to M20
- Imperial Sizes: 1/4″ to 3/4″
- Length Range
- Metric: 20 mm to 150 mm
- Imperial: 0.75″ to 6″
- Thread Pitch
- Metric (Coarse)
- Imperial: UNC
- Thread Type
- Fully threaded or partially threaded depending on application
Elevator Bolts Common Standards
- DIN 15237 – Elevator bolts for bucket elevators
- ASME B18.5 – Round head bolts with square neck (used in elevator bolt applications)
- Custom / OEM Specifications – Available upon request
Elevator Bolts Surface Finishes
- Zinc-plated – Corrosion resistance in indoor environments
- Hot-dip galvanized – Excellent protection in outdoor/marine use
- Black oxide – Mild corrosion resistance, often for aesthetic or indoor use
- Passivated – Used on stainless steel bolts to improve corrosion resistance
- Custom Coatings (e.g., PTFE) – Non-stick, chemical-resistant for harsh environments
Why Choose MT.BOLTS
- Material Diversity
- Standardized Production
- Ample Inventory
- Competitive Pricing
- Low-MOQ Customization
Benefits and Limitations of Elevator Bolts
Advantages
- Large, flat head offers wide load-bearing surface
- Minimizes pull-through in soft materials like belts and wood
- Square neck prevents bolt rotation during installation
- Ideal for bucket elevators and conveyor systems
Disadvantages
- Not ideal for high-torque or structural applications
- Requires access to the nut side for installation
- Square neck may not lock effectively in hard materials
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Elevator Bolts Applications
- Bucket elevator and conveyor systems
- Agricultural equipment
- Grain silos and feed mills
- Soft material clamping (e.g., rubber, plastic)
- Light-duty structural assemblies requiring flush mounting
FAQ About Elevator Bolts
It spreads the load over a wider area to prevent pull-through in soft materials.
They are not ideal for metal-to-metal unless the mating material is pre-punched to match the square neck.
Yes. MT.BOLTS supplies elevator bolts in 304, 316, and other corrosion-resistant materials.
Flat heads are for flush mounting; shallow mushroom heads provide a larger surface and slightly raised profile.
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