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Lock Nuts（Page3）

Category page for Lock Nuts/Non-Loosening Nuts. For MISUMI, you can select from M1 to 64, 5 types of material and 10 types of surface processing.
Selection is also possible based on loosening prevention method (friction ring/spring/nylon, etc.).

[Lock Nuts/Non-Loosening Nuts]
These products prevent bolts from loosening by adding a locking mechanism to the nut body. Mechanism and characteristics of the loosening prevention mechanism differ depending on the brand.

110 items

: 30; 45; 60

Days to Ship	All Same day 3 Day(s) or Less 4 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less 9 Day(s) or Less 11 Day(s) or Less 12 Day(s) or Less

Fine, Small E-Lock Nut

SUNCO

[Materials]Steel "Surface Treatment" trivalent chromate "Thread type" metric fine

Standard Price:	SGD 0.79
Days to Ship:	3 Day(s) or more

GU Nut

FUJI SEIMITSU

The 270° friction ring (special spring) shape allows for even better loosening prevention. Standard for the next generation loosening prevention.

Standard Price:	SGD 1.08-
Days to Ship:	4 Day(s) or more

Type 1 U-Nut (SUS316L)

FUJI SEIMITSU

Prevailing torque type lock nut with "metal ring anti-loosening function".
[Features]
·A locking nut that can be reused and exhibits a stable locking function.
·Prevents early disengagement even when the axial force is reduced. An all-metal product with excellent heat and cold resistance.
·Tightening is easy, and neither skilled techniques nor special tools are required.
·Since it exerts a self-locking effect by itself, parts management becomes easier and installation errors are prevented.
[Applications]
·It is used in a wide range of industries, from steel structures such as railways and bridges to automobiles, motorcycles, and industrial machinery.
·In addition to its anti-loosening performance, it continues to evolve in terms of durability and vibration resistance, and works reliably in any operating environment.

Standard Price:	SGD 3.97-
Days to Ship:	3 Day(s) or more

U Nut Type 1 (Fine Details)

U Nut Type 1 (Fine Details)【1-65 Pieces Per Package】

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 0.85-
Days to Ship:	3 Day(s) or more

U Nut Type 2

U Nut Type 2【1-600 Pieces Per Package】

FUJI SEIMITSU

[Materials] SCM435 Threaded
[Type]Metric coarse, Application/Function: Loosening prevention, Detailed loosening prevention, U nuts
[Nominal Thread (M)] 6 8 10 12 14 16 18 20 22 24 27 30 33 36
[Sales unit] Individual (Available for Purchase as 1pc) Box and Packaging.
[Surface treatment](Detailed) trivalent white, uni-chromate plating, chrome plating - Hex nut standard: Type 2
[Pitch (mm)] 1 1.25 1.5 1.75 2 2.5 3 3.5 4

Standard Price:	SGD 45.33-
Days to Ship:	4 Day(s) or more

Left-Handed U-Nut

Left-Handed U-Nut【1-3,000 Pieces Per Package】

FUJI SEIMITSU

The definitive locking nut that incorporates a "metal ring locking function". (Left-Handed Screw)
[Features]
·In addition to its anti-loosening performance, it continues to evolve in terms of durability and vibration resistance, and works reliably in any operating environment.
[Applications]
·It is used in a wide range of industries, from steel structures such as railways and bridges to automobiles, motorcycles, and industrial machinery.

Standard Price:	SGD 0.71-
Days to Ship:	3 Day(s) or more

Specialized U-Nut Pitch of 1.5

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 1.34-
Days to Ship:	3 Day(s) or more

Small U-Nut

Small U-Nut【1-1,400 Pieces Per Package】

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 0.84-
Days to Ship:	3 Day(s) or more

U Nut Thin Special Pitch P=1.5

FUJI SEIMITSU

[Nominal Thread (M)] 12
[Materials] Steel Thread
[Type]Metric fine, Application/Function, Locking
[Sales unit] Minimum Quantity (Available for Purchase from 1 pc), Locking for Detail, U-nut
[Pitch (mm)] 1.5
[Surface treatment](Details) Bright Chromate Plating

Standard Price:	SGD 2.01
Days to Ship:	3 Day(s) or more

Fine Welded U-Nut

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 1.53-
Days to Ship:	3 Day(s) or more

U Nut

U Nut【1-20 Pieces Per Package】

TRUSCO NAKAYAMA

[Features]
- The metallic friction ring makes contact with the thread on the bolt, increasing torque on the thread and preventing loosening. - Heat resistant, usable in locations with vibration, and reusable.

[Use]
- For locations where bolts can easily loosen.

Standard Price:	SGD 12.00-
Days to Ship:	3 Day(s) or more

Locking K Nut

Locking K Nut【25-1,000 Pieces Per Package】

KFC

[Features]
- Friction rings firmly press screw threads when tightening nuts, preventing them from coming loose.
- Handled like a standard nut; no special tools required.
- Compliant with NASA-standard NAS3350 and NAS3354 testing.

[Use]
- Locations with constant vibration, such as roads and railroads
- Ceiling-hung bolts and racks
- Mounting support brackets for cables

Standard Price:	SGD 159.63-
Days to Ship:	3 Day(s) or more

U Nut (Whit)

SUNCO

[Material] Steel
[Surface Processing] None / Bright Chromate Plating / Chromate Plating / Trivalent White
[Nominal of Thread (inch)] 5/8, 3/4, 7/8, 1, 1 1/8, 1 1/4, 1 3/8, 1 1/2
[Thread Ridge Type] Whitworth Coarse

Standard Price:	SGD 16.38-
Days to Ship:	7 Day(s) or more

U Nut (Fine)

U Nut (Fine)【1-65 Pieces Per Package】

SUNCO

[Material] Steel
[Surface Processing] Trivalent White / Trivalent Black
[Nominal of Thread (M)] 12/20/22/24/30/36/39/42
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Fine
[Loosening Prevention Details] U Nut

Standard Price:	SGD 1.85-
Days to Ship:	7 Day(s) or more

U Nut (Fine P=1.5)

SUNCO

[Material] Steel
[Surface Processing] None / Bright Chromate Plating / Trivalent White / Trivalent Black
[Nominal of Thread (M)] 12/30
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Fine
[Loosening Prevention Details] U Nut

Standard Price:	SGD 1.89-
Days to Ship:	7 Day(s) or more

Iron U-Nut Thin Type (Smooth Cut)

Iron U-Nut Thin Type (Smooth Cut)【1-500 Pieces Per Package】

SUNCO

[Material] Steel
[Surface Processing] None / Bright Chromate Plating / Trivalent White / Trivalent Black
[Nominal of Thread (M)] 8/12/14/16/20/24
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Fine
[Loosening Prevention Details] U Nut

Standard Price:	SGD 1.91-
Days to Ship:	3 Day(s) or more

Stable Nut Thin Type

Stable Nut Thin Type【400 Pieces Per Package】

SUNCO

[Material] Steel
[Surface Processing] Trivalent White
[Nominal of Thread (M)] 10
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Loosening Prevention Details] Friction Nut

Standard Price:	SGD 287.05
Days to Ship:	7 Day(s) or more

V Lock Nut

V Lock Nut【1,500 Pieces Per Package】

SUNCO

[Material] Steel
[Surface Processing] Trivalent Stainless Coating
[Nominal of Thread (M)] 6
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Hex Nut Standard] Type 2
[Loosening Prevention Details] Friction Nut

Standard Price:	SGD 279.32
Days to Ship:	7 Day(s) or more

HARDLOCK Nut (Whitworth)

HARDLOCK Nut (Whitworth)【40-100 Pieces Per Package】

SUNCO

[Material] S45C
[Surface Processing] Trivalent White / Parkerizing (Phosphate Coating)
[Nominal of Thread (inch)] 3/8, 1/2, 5/8, 3/4, 7/8, 1
[Application/Function] Loosening prevention
[Thread Ridge Type] Whitworth Coarse
[Loosening Prevention Details] Hard Lock Nut

Standard Price:	SGD 516.08-
Days to Ship:	7 Day(s) or more

On Sale Till 30/04/2025

Hex Nut, MS4 Series

FESTO

Standard Price:	SGD 8.60
	Special Price
Days to Ship:	Quote


Brand
Product Series
CAD
Days to Ship
Nominal of Thread (M)
Material
Applications, Functions
Thread Type
Surface Treatment
Sales Unit
Locking Details
Nominal of Thread (inch)
Surface Treatment (Details)
Hex Nut Type

																				On Sale Till 30/04/2025
Brand	SUNCO	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	TRUSCO NAKAYAMA	KFC	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO	FESTO
Product Series	Fine, Small E-Lock Nut	GU Nut	Type 1 U-Nut (SUS316L)	U Nut Type 1 (Fine Details)【1-65 Pieces Per Package】	U Nut Type 2【1-600 Pieces Per Package】	Left-Handed U-Nut【1-3,000 Pieces Per Package】	Specialized U-Nut Pitch of 1.5	Small U-Nut【1-1,400 Pieces Per Package】	U Nut Thin Special Pitch P=1.5	Fine Welded U-Nut	U Nut【1-20 Pieces Per Package】	Locking K Nut【25-1,000 Pieces Per Package】	U Nut (Whit)	U Nut (Fine)【1-65 Pieces Per Package】	U Nut (Fine P=1.5)	Iron U-Nut Thin Type (Smooth Cut)【1-500 Pieces Per Package】	Stable Nut Thin Type【400 Pieces Per Package】	V Lock Nut【1,500 Pieces Per Package】	HARDLOCK Nut (Whitworth)【40-100 Pieces Per Package】	Hex Nut, MS4 Series
CAD
Days to Ship	3 Day(s) or more	4 Day(s) or more	3 Day(s) or more	3 Day(s) or more	4 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	7 Day(s) or more	7 Day(s) or more	7 Day(s) or more	3 Day(s) or more	7 Day(s) or more	7 Day(s) or more	7 Day(s) or more	Quote
Nominal of Thread (M)	10	8 ～ 16	4 ～ 30	8 ～ 27	10 ～ 36	6 ～ 20	12 ～ 27	8	12	10 ～ 12	4 ～ 20	5 ～ 24	-	12 ～ 42	12 ～ 30	8 ～ 24	10	6	-	-
Material	Steel	Steel	Stainless Steel	Stainless Steel ～ Steel	Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Steel	Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Steel	Steel	Steel	Steel	Steel	Steel	-
Applications, Functions	Lock	Lock	Lock	Lock	Lock	Lock	Lock	Lock	Lock	For Welding	Lock	Lock	Standard	Lock	Lock	Lock	Lock	Lock	Lock	-
Thread Type	Metric, Fine	Metric, Coarse	Metric, Coarse	Metric, Fine	Metric, Coarse	Metric, Coarse (Left)	Metric, Fine	Metric, Fine	Metric, Fine	Metric, Fine	Metric, Coarse	Metric, Coarse	Whit, Coarse	Metric, Fine	Metric, Fine	Metric, Fine	Metric, Coarse	Metric, Coarse	Whit, Coarse	-
Surface Treatment	Trivalent Chromate	-	-	-	-	-	-	-	-	-	-	Not Provided / Zinc Plating	Bright Chrome Plating / Chromate Plating	Trivalent Chromate	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate	Painting, Coating	Parkerizing	-
Sales Unit	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.)	-	Box, Pkg.	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	-
Locking Details	Friction Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	Friction Nut	-	U Nut	U Nut	U Nut	Friction Nut	Friction Nut	Hard Lock Nut	-
Nominal of Thread (inch)	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-	1 ～ 7/8	-
Surface Treatment (Details)	Trivalent Chromate	Trivalent Chromate	Not Provided	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Bright Chrome Plating / Chromate Plating	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Bright Chrome Plating / Chromate Plating	Not Provided	Trivalent Chromate / Bright Chrome Plating	Not Provided / Hot Zinc Plating	Bright Chrome Plating / Chromate Plating	Trivalent Chromate	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate	-	Other Special Treatment	-
Hex Nut Type	-	-	Class 1	Class 1 ～ Class 2	Class 2	-	-	-	-	-	-	Class 1	Class 1	Class 2	Class 2	-	-	Class 2	-	-