Euro Bolts
Elevator Bolts made to approx. DIN 15237
EURO elevator bolts have a concave head and two lugs on the underside to help prevent rotation when tightening. The Euro elevator bolts are intended for the attachment of pressed steel elevator buckets incorporating recessed bolt holes. The recessed area surrounding the bolt hole is intended to accommodate the similarly domed surface under the bolt head.
- For steel elevator buckets with recessed holes - use Euro Bolt with large domed washer
- For steel buckets with flat holes - use Euro Bolt and small flat washer
- For plastic elevator buckets - use Euro Bolt and large flat washer
- Steel / Stainless steel 304 & 316
- Actual min core hardness 90-95 Rockwell B
- ISO grade 5.8 (exceeds DIN 15237)
- Large bolt head diameter
- Fully threaded
- Zinc plated as standard or stainless
- Bolt types: M6, M7, M8, M10, M12
- Cruciform head available on request
| Euro bolts | Size (mm) | Head Diameter (mm) | Max. Torque (Nm) | Package Quantity | Package Weight (kg) |
|---|---|---|---|---|---|
| M6 x 20 | 21 | 8 | 100 | 1.28 | |
| M6 x 25 | 21 | 8 | 100 | 1.38 | |
| M6 x 30 | 21 | 8 | 100 | 1.50 | |
| M7 x 20 | 23 | 13 | 100 | 1.82 | |
| M7 x 22 | 23 | 13 | 100 | 1.94 | |
| M7 x 25 | 23 | 13 | 100 | 2.10 | |
| M7 x 30 | 23 | 13 | 100 | 2.16 | |
| M7 x 35 | 23 | 13 | 100 | 2.22 | |
| M8 x 20 | 28 | 20 | 100 | 2.98 | |
| M8 x 22 | 28 | 20 | 100 | 2.00 | |
| M8 x 25 | 28 | 20 | 100 | 3.00 | |
| M8 x 30 | 28 | 20 | 100 | 3.02 | |
| M8 x 35 | 28 | 20 | 100 | 3.37 | |
| M8 x 40 | 28 | 20 | 100 | 3.72 | |
| M8 x 45 | 28 | 20 | 100 | 3.88 | |
| M8 x 50 | 28 | 20 | 100 | 3.94 | |
| M10 x 25 | 35 | 36 | 100 | 5.42 | |
| M10 x 30 | 35 | 36 | 100 | 5.43 | |
| M10 x 35 | 35 | 36 | 100 | 5.44 | |
| M10 x 40 | 35 | 36 | 100 | 5.84 | |
| M10 x 45 | 35 | 36 | 100 | 6.02 | |
| M10 x 50 | 35 | 36 | 100 | 6.18 | |
| M12 x 40* | 42 | 65 | 100 | 9.24 | |
| M12 x 50* | 42 | 65 | 100 | 4.96** | |
| M12 x 60* | 42 | 65 | 100 | 5.36** | |
| M12 x 70* | 42 | 65 | 100 | 5.60** |
* Not available in stainless steel.
FAQ - Elevator Bolts
How long of an elevator bolt do I need?
When installing buckets on an elevator belt, use this simple formula:
(belt thickness + bucket back thickness + washer thickness + nut thickness + 1/4 inch)
What grade are 4B elevator bolts?
4B elevator bolts meet or exceed ISO Grade 5.8 / SAE Grade 2 standards. The bolt grade guide below is for bolt diameters of 6mm (1/4") to 12mm (1/2"):
BOLT GRADE GUIDE:
| ISO Grade | SAE Grade | Min. Tensile Strenghth (psi) |
|---|---|---|
| 5.8 | 2 | 74000 |
| 8.8 | 5 | 120000 |
| 10.9 | 8 | 150000 |
What torque setting should I use?
An ideal installation will result in the elevator bolt head fitting snuggly just below the surface of the belt after tightening (Image B). However, never exceed the maximum recommended torque as shown in the tables below:
MAXIMUM RECOMMENDED TORQUE FOR 4B ELEVATOR BOLTS METRIC ISO GRADE 5.8
| Bolt Dia. | in. lbs. | ft. lbs. | nm |
|---|---|---|---|
| M6 | 72 | 6 | 8 |
| M7 | 115 | 10 | 13 |
| M8 | 168 | 14 | 19 |
| M10 | 336 | 28 | 38 |
| M12 | 588 | 49 | 66 |
MAXIMUM RECOMMENDED TORQUE FOR 4B ELEVATOR BOLTS SAE GRADE 2 OR 302 STAINLESS STEEL
| bolt dia. | in. lbs. | ft. lbs | nm |
|---|---|---|---|
| 1/4" | 72 | 6 | 8 |
| 5/16" | 156 | 13 | 18 |
| 3/8" | 276 | 23 | 31 |
| 1/2" | 684 | 57 | 77 |
How do you install an elevator bolt?
The head of the elevator bolt should lie against the inside surface of the elevator belt with the nuts and washers on the inside of the elevator bucket. An ideal installation will result in the elevator bolt head fitting snuggly just below the surface of the elevator belt.
Do you have any maintenance recommendations?
After initial installation, it is recommended that the bucket elevator be run for approximately four hours. After which the bolts should be re-tightened to ensure that there are no loose parts. Periodic inspections are always recommended to check for any issues that may occur during the life of the elevator, including checks for loose or damaged elevator bolts.
