Does the lock nut need to be greased?

Lubricant is required for both tightening and loosening. If the hardness of the fixed shaft is relatively low, please use a grease with high lubricity.

Precautions when fixing

In order to ensure the maximum effect of the lock nut, please expose at least 2 inches of the threaded part when fixing. Standard type lock nut is a round nut, with four small slots around its outer perimeter, which can be tightened on the stud body using a crescent wrench. The lock nut should be equipped with a shaft washer, which allows the small slot on the stud body to be fixed relative to its peripheral small slot, preventing its loosening.

Differences between a standard nut and a lock nut (1)

1. Vibration resistance is not the same Standard nut: inferior relative to the lock nut Lock nut: superior anti-vibration performance. When the thread is tightened, the top of thread of the bolt closely enters the 30° wedge-shaped slope of the nut to be clamped, and the normal force exerted on the wedge-shaped slope forms an angle of 60° with the axis of the bolt instead of The included angle of 30°. Therefore, the normal force generated when the locknut is tightened is much greater than that of the standard nut, and it has a great anti-loosening and anti-vibration ability.

Differences between a standard nut and a lock nut (2)

2. Wear resistance and shear resistance are not the same Standard nut: poor abrasion resistance and shear resistance; Lock nut: excellent wear resistance and shear resistance. The 30° inclined surface of thread bottom of the nut can make the nut locking force evenly distributed on all the threads of each ridge. Since the compression force on the thread surface of each ridge is evenly distributed, the nut can better solve the thread wear and shear deformation problem.

Differences between a standard nut and a lock nut (3)

3. The reutilization rate is not the same Standard nut: low reutilization rate; Lock nut: high reutilization rate. Extensive use shows that after repeated tightening and disassembly of the anti-loosening nut, its locking force is still not reduced, and the original locking can be maintained.

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Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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C-FM12

Nominal of Thread M type CAD Days to Ship

Specification/Dimensions

Nominal of Thread M
M12X1.5

M15X1.0

M17X1.0

M20X1.0

M20X1.5

M24X1.5

M25X1.5

M30X1.5

M35X1.5

M40X1.5

M45X1.5

M50X1.5

M55X2.0

M60X2.0
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Bearing Lock Nuts F Type 60-degree Clamping

Name: Bearing Lock Nuts F Type 60-degree Clamping
Brand: MISUMI
Availability: InStock

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Check FAQ of this product (5 items)

Brand :

MISUMI

MiSUMi Economy

MISUMI

Part Number :

C-FM12

Order Qty :
Total Price :

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Days to ship :

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CAD Download

Economy Bearing Lock Nuts F Type 60-degree Clamping

Clamping Stable Reliable

- The Economy Series Bearing Lock Nuts deliver high performance at a budget-friendly price.

- Choose from a broad range of thread sizes for versatility in various applications.

- Made from strong materials with a locking pin, engineered to withstand demanding conditions.

- The clamping design provides a strong grip and stability, managing vibrations.

- Enjoy fast shipping and extensive inventory for timely delivery.

Economy Compact Precision Bearing Lock Nuts

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product Overview of Fulcrum Pins

Fulcrum Pins, Lock nut is widely used in machinery and other industries. Its working principle is self-locking by the friction between the nut and the bolt. But the reliability of this self-locking is reduced in dynamic loads. In some important occasions, we will take some anti-loosening measures to ensure the reliability of nut locking. The working principle of the nut is self-locking by the friction between the nut and the bolt. But the reliability of this self-locking is reduced in dynamic loads.

Product Feature of Fulcrum Pins

Structure and features of Fulcrum Pins
Features of Fulcrum Pins
In some important occasions we will take some anti-loosening measures to ensure the reliability of nut locking. Fulcrum Pins, Lock Nut is one of the anti-loosening measures.
Economic type F type lock nut (60° locking) Product Overview

Economic type F type lock nut (60° locking) Product Overview

Fulcrum Pins Locking copper and thread are designed at a 60° angle, and do not bear the axial load on the thread. When the nut is locked, the thread surface will not relieve the axial load

C-FM 60° locking copper design can withstand axial force and radial force at the same time

Dimensional Drawing of Fulcrum Pins

Economic type F type lock nut (60° locking) Dimensional Drawing

Specifications Overview of Fulcrum Pins

Economic type F type lock nut (60° locking) Specifications Overview

Fulcrum Pins, Axial vibration shock test result (Vibration frequency: 0.6cpm, acceleration: 8G)
Economic type F type lock nut (60° locking) Specifications Overview

Example Use of Fulcrum Pins

Economic type F type lock nut (60° locking) Example of use

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
C-FM12
C-FM15
C-FM17
C-FM20
C-FM20-1
C-FM24
C-FM25
C-FM30
C-FM35
C-FM40
C-FM45
C-FM50
C-FM55
C-FM60

Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Nominal of Thread M
₹ 712.40	1 Piece(s)	Available	Same day	10	M12X1.5
₹ 712.40	1 Piece(s)	Available	Same day	10	M15X1.0
₹ 683.80	1 Piece(s)	Available	Same day	10	M17X1.0
₹ 730.60	1 Piece(s)	Available	Same day	10	M20X1.0
₹ 730.60	1 Piece(s)	Available	Same day	10	M20X1.5
₹ 765.70	1 Piece(s)	Available	Same day	10	M24X1.5
₹ 765.70	1 Piece(s)	Available	Same day	10	M25X1.5
₹ 813.80	1 Piece(s)	Available	Same day	10	M30X1.5
₹ 876.20	1 Piece(s)	Available	Same day	10	M35X1.5
₹ 950.30	1 Piece(s)	Available	Same day	10	M40X1.5
₹ 1,063.40	1 Piece(s)	Available	Same day	10	M45X1.5
₹ 1,190.80	1 Piece(s)	Available	Same day	10	M50X1.5
₹ 1,374.10	1 Piece(s)	Available	Same day	10	M55X2.0
₹ 1,457.30	1 Piece(s)	Available	Same day	10	M60X2.0

Basic Information

Type	Lock Nut	Shape	Round Shape	Material	S45C Thermal Refined
Surface Treatment	Phosphate Conversion Coating	Screw Type	Metric (Fine) Thread

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: Does the lock nut need to be greased?: Answer: Lubricant is required for both tightening and loosening. If the hardness of the fixed shaft is relatively low, please use a grease with high lubricity.
Question: Precautions when fixing: Answer: In order to ensure the maximum effect of the lock nut, please expose at least 2 inches of the threaded part when fixing. Standard type lock nut is a round nut, with four small slots around its outer perimeter, which can be tightened on the stud body using a crescent wrench. The lock nut should be equipped with a shaft washer, which allows the small slot on the stud body to be fixed relative to its peripheral small slot, preventing its loosening.
Question: Differences between a standard nut and a lock nut (1): Answer: 1. Vibration resistance is not the same
Standard nut: inferior relative to the lock nut
Lock nut: superior anti-vibration performance. When the thread is tightened, the top of thread of the bolt closely enters the 30° wedge-shaped slope of the nut to be clamped, and the normal force exerted on the wedge-shaped slope forms an angle of 60° with the axis of the bolt instead of The included angle of 30°. Therefore, the normal force generated when the locknut is tightened is much greater than that of the standard nut, and it has a great anti-loosening and anti-vibration ability.
Question: Differences between a standard nut and a lock nut (2): Answer: 2. Wear resistance and shear resistance are not the same
Standard nut: poor abrasion resistance and shear resistance;
Lock nut: excellent wear resistance and shear resistance. The 30° inclined surface of thread bottom of the nut can make the nut locking force evenly distributed on all the threads of each ridge. Since the compression force on the thread surface of each ridge is evenly distributed, the nut can better solve the thread wear and shear deformation problem.
Question: Differences between a standard nut and a lock nut (3): Answer: 3. The reutilization rate is not the same
Standard nut: low reutilization rate;
Lock nut: high reutilization rate. Extensive use shows that after repeated tightening and disassembly of the anti-loosening nut, its locking force is still not reduced, and the original locking can be maintained.

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