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30° Flank-LockingUltra-Uniform LockingRadial-LockingAxial-LockingMounting ToolsCustomized LocknutsDownload Brochure
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OverviewLearn about our mission and team.HistoryExplore our key milestones.CertificationsView our ISO and safety awards.
Ultra-Uniform Locking
HKFFull-flangeHKRSlim ring-style
30° Flank-Locking
MFStd flange · PreloadBFWide flange · Heavy-dutyTMFLow-profile · Tight-spaceSFZStd flange · High-vibrationMFZStd flange · Extra-torqueBFZWide flange · Max-torque
Radial-Locking
MRStandard collar · Shaft-stopSRSplit collar · Quick-adjustMRRACompact collar · Tight-spaceMRZStandard collar · Heavy-dutySRZSplit collar · Heavy-dutyMRNNylon collar · Vibration-dampMRSStainless collar · Corrosion-proof
Axial-Locking
MKRStd flange · PreloadMKWWide flange · High-loadMKKLow-profile · Tight-spaceMAMicro nut · Compact
Mounting ToolsCustomized LocknutsDownload Brochure
OverviewMachined, ground & inspected in-house.Precision GrindingISO 4H threads, 0.002 mm run-out.QualityStrict inspection for top standards.
Installation guideFitting steps and tightening sequenceTorque CalculatorTightening torque by series and sizeStatic Axial LoadMaximum load ratings by thread sizeDownloadsCatalogue, datasheets and certificatesFAQFitting, tolerances and materials
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IMTEX 2027 Bangalore international exhibition NIKKI precision locknuts

NIKKI Precision Locknuts at IMTEX 2027 in Bangalore

NIKKI exhibits at IMTEX 2027 at the Bangalore International Exhibition Centre from 21 to 27 January, with the full locking range on the stand.

Jul 12, 2026
TIMTOS 2027 Taipei Machine Tools Exhibition NIKKI precision locknuts

NIKKI Precision Locknuts at TIMTOS 2027 in Taipei

NIKKI exhibits at TIMTOS 2027 in Taipei from 2 to 6 March, with all four locking series, the mounting tools and a factory visit on request.

Jul 5, 2026
EMO Milano 2027 Machine Tools Exhibition NIKKI precision locknuts

NIKKI Precision Locknuts at EMO MILANO 2027

NIKKI exhibits at EMO MILANO 2027 at Fieramilano Rho from 4 to 8 October, with all four locking series and EU compliance paperwork available.

Jun 28, 2026
Ground contact surface on a NIKKI precision locknut

How to Choose Between Grinding Grade and Precision Turning Locknuts

NIKKI locknuts are made in two machining grades, ground at 0.002 mm and precision turned at 0.005 mm. The model code says which one you are quoting.

May 5, 2026

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No.9, Jingke 6th Rd.
Nantun Dist., Taichung City 408, Taiwan (R.O.C.)Get directions →
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