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Hexagon Slotted and Castle Nut

DIN 935 (Current)

Material
Stainless Steel, Carbon Steel
Property Class
A2-70, A4-80, 6, 8 and more
Finish
Passivated, Plain, Zinc Plated, Hot Dip Galvanized and more
Size range
M4–M36
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Select sizes and quantities — 11 confirmed sizes to DIN 935

Material
Grade
Stainless SteelCarbon Steel
Finish
dNominal Diameter (mm)PThread Pitch (mm)sWidth Across Flats (max) (mm)eWidth Across Corners (min) (mm)mNut Height (mm)NSlot Width (mm)MOQQuantity and inquiry
M40.777.6651.21000
M50.888.7961.41000
M611011.057.521000
M81.251314.389.52.5600
M101.51718.9122.8600
M121.751921.1153.5400
M1622426.75194.5400
M202.53032.95224.5200
M2433639.55275.5200
M303.54650.85337200
M3645560.79387200

Showing 11 of 11 sizes

M4 × 0.7 × 7 × 7.66 × 5 × 1.2 × 3.2 × 1×10

dNominal Diameter (mm)M4
PThread Pitch (mm)0.7
sWidth Across Flats (max) (mm)7
eWidth Across Corners (min) (mm)7.66
mNut Height (mm)5
NSlot Width (mm)1.2
MOQ1000

M5 × 0.8 × 8 × 8.79 × 6 × 1.4 × 4 × 1.2×12

dNominal Diameter (mm)M5
PThread Pitch (mm)0.8
sWidth Across Flats (max) (mm)8
eWidth Across Corners (min) (mm)8.79
mNut Height (mm)6
NSlot Width (mm)1.4
MOQ1000

M6 × 1 × 10 × 11.05 × 7.5 × 2 × 5 × 1.6×14

dNominal Diameter (mm)M6
PThread Pitch (mm)1
sWidth Across Flats (max) (mm)10
eWidth Across Corners (min) (mm)11.05
mNut Height (mm)7.5
NSlot Width (mm)2
MOQ1000

M8 × 1.25 × 13 × 14.38 × 9.5 × 2.5 × 6.5 × 2×16

dNominal Diameter (mm)M8
PThread Pitch (mm)1.25
sWidth Across Flats (max) (mm)13
eWidth Across Corners (min) (mm)14.38
mNut Height (mm)9.5
NSlot Width (mm)2.5
MOQ600

M10 × 1.5 × 17 × 18.9 × 12 × 2.8 × 8 × 2.5×20

dNominal Diameter (mm)M10
PThread Pitch (mm)1.5
sWidth Across Flats (max) (mm)17
eWidth Across Corners (min) (mm)18.9
mNut Height (mm)12
NSlot Width (mm)2.8
MOQ600

M12 × 1.75 × 19 × 21.1 × 15 × 3.5 × 10 × 3.2×22 × 17

dNominal Diameter (mm)M12
PThread Pitch (mm)1.75
sWidth Across Flats (max) (mm)19
eWidth Across Corners (min) (mm)21.1
mNut Height (mm)15
NSlot Width (mm)3.5
MOQ400

M16 × 2 × 24 × 26.75 × 19 × 4.5 × 13 × 4×28 × 22

dNominal Diameter (mm)M16
PThread Pitch (mm)2
sWidth Across Flats (max) (mm)24
eWidth Across Corners (min) (mm)26.75
mNut Height (mm)19
NSlot Width (mm)4.5
MOQ400

M20 × 2.5 × 30 × 32.95 × 22 × 4.5 × 16 × 4×36 × 28

dNominal Diameter (mm)M20
PThread Pitch (mm)2.5
sWidth Across Flats (max) (mm)30
eWidth Across Corners (min) (mm)32.95
mNut Height (mm)22
NSlot Width (mm)4.5
MOQ200

M24 × 3 × 36 × 39.55 × 27 × 5.5 × 19 × 5×40 × 34

dNominal Diameter (mm)M24
PThread Pitch (mm)3
sWidth Across Flats (max) (mm)36
eWidth Across Corners (min) (mm)39.55
mNut Height (mm)27
NSlot Width (mm)5.5
MOQ200

M30 × 3.5 × 46 × 50.85 × 33 × 7 × 24 × 6.3×50 × 42

dNominal Diameter (mm)M30
PThread Pitch (mm)3.5
sWidth Across Flats (max) (mm)46
eWidth Across Corners (min) (mm)50.85
mNut Height (mm)33
NSlot Width (mm)7
MOQ200

M36 × 4 × 55 × 60.79 × 38 × 7 × 29 × 6.3×63 × 50

dNominal Diameter (mm)M36
PThread Pitch (mm)4
sWidth Across Flats (max) (mm)55
eWidth Across Corners (min) (mm)60.79
mNut Height (mm)38
NSlot Width (mm)7
MOQ200

Product details

Description
The hexagon slotted and castle nut to DIN 935 provides a positive mechanical lock when used with a cotter pin. The nut features a standard hexagon body and a raised cylindrical section with slots that align with a hole in the mating bolt or stud. After tightening, a cotter pin is inserted through the slots and the bolt hole to prevent rotation. This design is suited for joints subject to vibration. The nut is supplied in carbon steel and stainless steel, with grade options 6, 8, 10, A2-70, and A4-80. Available finishes include zinc plated, hot dip galvanized, Dacromet, phosphate, blackened, plain, and passivated. Sizes range from M4 to M64. For quotation, specify diameter, material, grade, finish, and quantity.
Features
Hexagon body with slotted cylindrical top section for cotter pin insertion · Threaded through the full nut height · Installed with a standard wrench and secured by a cotter pin · Available in M4–M64, carbon steel grades 6, 8, 10 and stainless steel A2-70, A4-80
Applications
Joints subject to vibration, Machinery and moving equipment, Automotive and vehicle assembly

Order assurance

Confirmed for the quoted product and order.

Reports & inspection

Agreed in the quotation.

  • EN 10204 3.1 material certificate
  • Dimensional inspection report
  • Certificate of conformity
  • Mechanical test report
  • Chemical analysis report
  • Coating inspection report
  • Batch and lot traceability

Packaging & delivery

Options we supply.

  • Bulk carton packing
  • Small boxes with outer cartons
  • Palletized shipment
  • Fumigation-free pallets
  • Inner poly bags
  • Buyer branding and labels

Product questions

What sizes of Hexagon Slotted and Castle Nut do you supply?

Execution standard: DIN 935. The confirmed specification table covers M4–M36 diameters. Use the specification table to select the exact variant required for quotation.

Which materials, grades and finishes can I order?

Material: Stainless Steel, Carbon Steel; Property class: A2-70, A4-80, 6, 8, 10; Finish: Passivated, Plain, Zinc Plated, Hot Dip Galvanized, Dacromet, Phosphate, Blackened. Availability should be confirmed against the selected specification and order quantity.

Where are these locking nuts typically used?

Typical applications include Joints subject to vibration, Machinery and moving equipment, Automotive and vehicle assembly. Final suitability depends on the selected material, grade, finish and operating conditions.

Quote Hexagon Slotted and Castle Nut

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