M18 Low castellated nuts DIN937 white zinc plating 25 pcs.
Low castellated nuts M18 DIN 937, steel, white electroplated zinc. Pitch 2,5 mm, tolerance 6H; height m 12,3–13 mm, wrench size s 27 mm. Number of slots: 6. Price for 25 pcs.

Low castellated nuts M18 DIN 937
Low nut with hexagonal body and a narrower slotted crown. The slots allow a split pin to pass through the transverse hole in the bolt or pin, if the joint design provides for this.
Technical specifications
- Dimensional reference: DIN 937
- Catalogue association: PN 82159
- Nut type: Low castellated, with hexagonal body
- Internal thread d: M18
- Thread pitch P: 2,5 mm
- Thread tolerance: 6H
- Height m — nominal and maximum: 13 mm
- Height m — minimum: 12,3 mm
- Solid portion height w — minimum: 7,64 mm
- Solid portion height w — maximum: 8 mm
- Crown diameter de — maximum: 25 mm
- Crown diameter de — minimum: 24,3 mm
- Wrench size s: 27 mm
- Number of slots: 6
- Mechanical properties standard: DIN 267-24 (catalogue requirements)
- Manufacturing accuracy grade: B (ISO 4759-1)
- Material: Steel
- Coating: White electroplated zinc
- Catalogue coating reference: ISO 4042
- Split pin according to the catalogue: DIN 94 / ISO 1234, 4 × 32 mm
- Quantity per pack: 25 pcs.
- Sales unit: pack
Dimensions apply to the specified thread version. References to standards are catalogue information, without declaring test results for a specific batch.

Material and finish
Steel with white electroplated zinc coating, internal thread 6H. Product grade B according to the catalogue.

Diagram dimensions and callouts:
d — thread M18; P = 2,5 mm; tolerance 6H.
m — overall height: from 12,3 to 13 mm.
w — solid portion height: from 7,64 to 8 mm.
de — crown diameter: from 24,3 to 25 mm.
s — wrench size: 27 mm.
The in-house diagram shows the corresponding family of low nuts using only lines and dimensional callouts. It is a catalogue illustration, not manufacturing documentation.
Scope of delivery
The price includes 25 nuts M18 DIN 937, white zinc plating, without split pins.
Product and neutral carton illustrations are illustrative; the number of items in front of the carton does not define the quantity supplied. The table specifies a split pin DIN 94 / ISO 1234 4 × 32 mm. Its fit to the actual hole and joint geometry must be checked during assembly.
Frequently asked questions
How many pieces does the price include?
25 nuts M18.
What thread pitch does this version have?
2,5 mm, tolerance 6H.
What is the height of the nut?
Height m from 12,3 to 13 mm. Solid portion height w from 7,64 to 8 mm.
What wrench size and split pin does the catalogue specify?
Wrench size s 27 mm and split pin DIN 94 / ISO 1234 4 × 32 mm. Split pins are not included in the offer.
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Sales unitpack
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MaterialSteel
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CoatingWhite electroplated zinc
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Source reference9805530443
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Quantity per pack25 pcs
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Wrench size s27 mm
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Thread pitch P2,5 mm
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Thread tolerance6H
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Internal thread dM18
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Nut typeLow castellated, with hexagonal body
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Dimensional referenceDIN 937
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Manufacturing accuracy classB (ISO 4759-1)
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Mechanical properties standardDIN 267-24 (catalogue requirements)
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Coating catalogue referenceISO 4042
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Catalogue linkPN 82159
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Number of grooves6
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Split pin according to catalogueDIN 94 / ISO 1234, 4 × 32 mm
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Height m — nominal and maximum13 mm
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Height m — minimum12,3 mm
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Solid section height w — minimum7,64 mm
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Solid section height w — maximum8 mm
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Crown diameter de — maximum25 mm
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Crown diameter de — minimum24,3 mm
1. Eye protection:
– Always wear safety goggles or a face shield to protect your eyes from sparks, particles and metal fragments.
2. Hearing protection:
– When working in a noisy environment, use ear defenders or earplugs to prevent hearing damage.
3. Respiratory protection:
– When working in dusty surroundings or in the presence of fumes, wear a filtering mask or an appropriate respirator.
– Ensure proper ventilation of the workstation.
4. Hand and skin safety:
– Use protective gloves that protect against mechanical injuries and chemicals.
– Where necessary, use protective creams to prevent irritation and dry skin.
5. Work clothing:
– Work in protective clothing resistant to sparks and splashes.
– Avoid loose clothing, jewellery and loose hair near machinery.
6. Fire risk:
– Keep the workstation free of flammable materials (e.g. paper, fabrics and chemicals).
– Keep a serviceable fire extinguisher close at hand and know how to use it.
7. Electrical hazards:
– Check the condition of cables and electrical equipment before use.
– Do not use electrical devices in damp conditions.
– Disconnect equipment from the power supply during maintenance or repairs.
8. Use of machinery and tools:
– Regularly inspect the technical condition of machines and tools.
– Use equipment in accordance with the manufacturer's instructions.
– Blades and tools should be maintained regularly and kept in good condition.
– Machines should be fitted with appropriate guards and protective devices.
9. Handling materials:
– Use handling equipment to move heavy components.
– Lift and carry using ergonomic practices to avoid injury.
10. Working with chemicals:
– Store chemicals in labelled, safe containers.
– Use substances in accordance with the manufacturer's instructions and occupational health and safety rules.
– Ensure air circulation when using chemicals.
Other important rules:
– Keep the workstation clean and tidy.
– Ensure adequate lighting in the working area.
– Provide occupational health and safety training.
– Carry out regular safety audits and comply with current regulations.

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