Material
Carbon Steel
Type
Slotted / castellated nut
Size Range
M4–M36
Surface Finish
Plain / Zinc / H.D.G
Class
6 / 8 / 10
Standard
DIN 935 / ISO 7035
Packaging
Carton / Pallet
MOQ
1 piece (sample)
Precision Manufacturing, Batch After Batch
From cold-heading raw steel wire to heat-treated finished bolts, every step runs under strict in-house process control — ensuring the dimensional accuracy and strength grade printed on every head marking.
Product Overview
Application Scenarios
Hex slotted / castle nuts (DIN 935) carry a castellated crown with slots that line up with a cross-drilled hole in the bolt; a split (cotter) pin then passes through both to positively lock the nut against rotation. This makes them the standard choice for axle spindles, wheel hubs, kingpins, tie-rods and any safety-critical joint where a nut must never back off. The pin gives a mechanical, tamper-evident lock independent of friction.
Installation Notes
Tighten the nut to the specified torque, then continue only as far as needed to align a pair of slots with the cross-hole in the bolt (never back off to align). Pass a new split pin through the slots and hole, then bend its legs around the nut to secure it. Always use a fresh cotter pin, and choose the castle-nut and bolt combination so a slot lines up close to correct torque.
Material & Certification
Manufactured from carbon steel to property class 6, 8 or 10 per ISO 898-2 and produced to DIN 935, with a machined castellated crown to take a standard split pin. Every batch is traceable to raw material certificates; each run passes 100% dimensional and thread-gauge inspection; EN 10204 3.1 certificates available on request.
Hex Slotted / Castle Nut
Carbon Steel Slotted / Castle Nut · Class 6 / 8 / 10 · DIN 935
Dimensional Specifications
DIN 935 Standard Reference Dimensions — click a size to locate it below
| Thread Size | Width Across Flats s (mm) | Total Height m (mm) |
|---|---|---|
| M5 | 8 | 6.0 |
| M6 | 10 | 7.5 |
| M8 | 13 | 9.5 |
| M10 | 16 | 12.0 |
| M12 | 18 | 15.0 |
| M16 | 24 | 19.0 |
Reference dimensions per DIN 935 standard. Full size range M4–M36 available on request — contact us for custom specification sheets.
Applications
Construction
Steel structures, bridges, buildings, concrete anchors
Machinery
Heavy equipment, industrial machines, manufacturing
Infrastructure
Railways, towers, pipelines, power transmission
Automotive
Vehicle assembly, chassis, engine components
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