System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Material Material |
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Thread Spacing Thread Spacing |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Hex Nut Profile Hex Nut Profile |
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| Standard | Extra Wide |
Thread Direction Thread Direction |
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Drive Style Drive Style |
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Locking Type Locking Type |
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 | Cotter Pin |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Thread Fit Thread Fit |
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Pipe Size Pipe Size |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Connection Style Connection Style |
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 | Threaded |
Maximum Temperature Maximum Temperature |
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About Nuts, Materials, and Finishes
More
Metric Fine-Thread Medium-Strength Steel Hex Nuts—Class 8
Class 8 nuts are comparable in strength to Class 8.8 bolts and are suitable for fastening most machinery and equipment.
For technical drawings and 3-D models, click on a part number.
Metric Extreme-Strength Steel Extra-Wide Hex Nuts—Grade 2H
About 10% wider and taller than standard hex nuts, these nuts distribute the load over a large area. They're also known as heavy hex nuts. Grade 2H nuts are comparable in strength to Class 12.9 bolts. They're about 20% stronger than high-strength steel nuts and are used in heavy machinery, such as earth-moving equipment.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
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| Size | Pitch, mm | Spacing | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—ASTM Grade 2H | ||||||||
| M56 | 5.5 | Coarse | 90 | 56 | ASTM A194 | 1 | 000000000 | 000000 |
Metric Medium-Strength Steel Locknuts for use with Cotter Pins—Class 8
Often referred to as castle nuts, secure these by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included.
Steel locknuts are best for dry environments, since moisture will cause them to rust. They are weldable and can be painted or finished.
For technical drawings and 3-D models, click on a part number.
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| Size | Pitch, mm | Wd., mm | Ht., mm | For Cotter Pin Dia., mm | Min. Slot Wd., mm | Min. Slot Dp., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—Class 8 | ||||||||||
| M56 | 5.5 | 85 | 57 | 8 | 9 | 12 | DIN 935 | 1 | 000000000 | 000000 |
Thread Adapters for Drum Openings
Convert drum openings with metric or BSPP threads to a 2 NPT pipe size.