Single Slotted Self Locknut

• Structure: Hexagonal nut with a single slot (castle nut) or multiple slots (hex slotted nut) cut through one face.
• Locking Mechanism: After tightening, a cotter pin is inserted through the slot(s) and a hole in the bolt, preventing the nut from rotating relative to the bolt.
• Reusability: Can be reused as long as the nut and cotter pin are not damaged or deformed.

• Technical Specifications 

Nominal Size (d)	Pitch (P)	s (max)	h (max)	m (min)
M3	0.5	5.5	6.0	2.4
M4	0.7	7.0	7.5	3.2
M5	0.8	8.0	8.2	4.7
M6	1.0	10.0	10.0	5.2
M8	1.25	13.0	13.0	6.8
M10	1.5	16.0	16.0	8.4
M12	1.75	18.0	18.0	10.8
M16	2.0	24.0	24.0	14.8
M20	2.5	30.0	30.0	18.0

Our products are widely used in railways, rail transit, coal mines, new energy and machinery manufacturing, providing reliable support with their dependable quality. Our highly automated production lines, supported by a skilled team and rigorous quality management systems, ensure consistent output and rapid deliver.