Introduction of the NSK washer, type M Reliable screw locking protects against loosening and unscrewing where high vibration is present. Settling effects are offset by the high spring effect. Optimum locking function with elongated hole screw connections. 1. Areas of application Highly stressed and high-strength bolted connections in accordance with VDI 2230-1. Force-fit, static and dynamic transmission of the operating load via the braced components. Strength classes up to and including 8.8. Circular hole connections. 2. Special features Suitable for high preload forces. Defined, constant coefficient of friction. Increases the flexibility of the screw connection. Special spring characteristics / optimum residual spring behaviour for strength classes up to and including 8.8 (Characteristic spring curves shown in M-Design). Locking element to prevent loosening and automatic unscrewing. Complies with standards DIN 267-26, DIN 25201-4, DIN EN 17976. 3. The advantages to you Where high vibrations are present, secures against unscrewing and loss of preload tension. Thanks to its special toothing, no chip formation during fitting. Settling effects are offset by the high spring effect. Low distribution of tightening torques and friction coefficients. Proven screw locking function at low and high preload forces. The broad product portfolio provides a solution for almost all applications, plus economic benefits thanks to standardisation. The development of customer-specific custom solutions is also possible. Screw connections with short clamping length are reliably secured when dynamic loads are present. The locking elements have been designed on the basis of the tightening torques and constructional standards set out in VDI 2230. Reusable (max 3 times). Optimum locking function with elongated hole screw connections (NSK B and NSK L). Available in corrosion-protected special hardened tempered steel or stainless steel. Special materials or surfaces available on request. Protects the backing (the NSK washer does not turn during assembly). Easy assembly, as it is a single-part locking element. 4. Applications Railway Supply Industry Elevators Agricultural Equipment Machine Building Electrical Engineering Power Engineering
Introduction of the NSK washer, type M Reliable screw locking protects against loosening and unscrewing where high vibration is present. Settling effects are offset by the high spring effect. Optimum locking function with elongated hole screw connections. 1. Areas of application Highly stressed and high-strength bolted connections in accordance with VDI 2230-1. Force-fit, static and dynamic transmission of the operating load via the braced components. Strength classes up to and including 8.8. Circular hole connections.
2. Special features Suitable for high preload forces. Defined, constant coefficient of friction. Increases the flexibility of the screw connection. Special spring characteristics / optimum residual spring behaviour for strength classes up to and including 8.8 (Characteristic spring curves shown in M-Design). Locking element to prevent loosening and automatic unscrewing. Complies with standards DIN 267-26, DIN 25201-4, DIN EN 17976.
3. The advantages to you Where high vibrations are present, secures against unscrewing and loss of preload tension. Thanks to its special toothing, no chip formation during fitting. Settling effects are offset by the high spring effect. Low distribution of tightening torques and friction coefficients. Proven screw locking function at low and high preload forces. The broad product portfolio provides a solution for almost all applications, plus economic benefits thanks to standardisation. The development of customer-specific custom solutions is also possible. Screw connections with short clamping length are reliably secured when dynamic loads are present. The locking elements have been designed on the basis of the tightening torques and constructional standards set out in VDI 2230. Reusable (max 3 times). Optimum locking function with elongated hole screw connections (NSK B and NSK L). Available in corrosion-protected special hardened tempered steel or stainless steel. Special materials or surfaces available on request. Protects the backing (the NSK washer does not turn during assembly). Easy assembly, as it is a single-part locking element.
4. Applications