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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.

112 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

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:	4 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

U Nut Type 2 (Fine Details)

U Nut Type 2 (Fine Details)【1-120 Pieces Per Package】

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 2.53-
Days to Ship:	Same day 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:	4 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:	4 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:	4 Day(s) or more

U Nut Type 3

U Nut Type 3【1-4,000 Pieces Per Package】

FUJI SEIMITSU

Thread
[Type]Metric coarse, Application/Function, Locking, Locking for detail, U-nut
[Nominal Thread (M)] 4 5 6 8 10 12 14 16 20
[Materials] Steel, Stainless steel
[Sales unit] Minimum Quantity (Available for Purchase from 1 pc) Box and Pkg.
[Surface treatment](Details) non-trivalent chromate, trivalent black, trivalent white, bright chromate plating, chromate plating, black chromate
[Pitch (mm)] 0.7 0.8 1 1.25 1.5 1.75 2 2.5

Standard Price:	SGD 0.51-
Days to Ship:	4 Day(s) or more

Fine Welded U-Nut

FUJI SEIMITSU

Definitive edition of Locking Nuts

Standard Price:	SGD 1.53-
Days to Ship:	4 Day(s) or more

Wedge Nut Type A (Stainless Steel) (Pack Product)

YAHATA

The special shape with a wedge face makes a wedge effect and locks the target bolt tightly.
For mounting on bicycles, vibrating machinery, tools, casters, etc.
Sold in small boxes. When placing an order, please enter the number of pieces in the quantity column.

Standard Price:	SGD 1.02-
Days to Ship:	9 Day(s) or more

Wedge Nut Type F (Iron/Trivalent Chromate) (Pack Product)

YAHATA

The special wedge face shape locks the target bolt tightly.
For mounting onto bicycles, vibrating machinery, tools, casters, etc.
Fits into small boxes. When placing an order, please enter the number of pieces in the quantity column.

Standard Price:	SGD 0.62-
Days to Ship:	9 Day(s) or more

Hex Nut "Hard Lock Nut" (with Rim/Trivalent Chromate)

Hex Nut "Hard Lock Nut" (with Rim/Trivalent Chromate)【1-15 Pieces Per Package】

TRUSCO NAKAYAMA

[Features]
● Almost completely eliminates bolt rotation, resulting in near perfect anti-loosening properties
● Firmly fixes male screws in place, even mid-thread
● Reusable
● Protects bolts from bending, and can extend the service life of the fastening
● Optimal for fastening differing materials (wood, plastic, etc.) that may cause vibration

Standard Price:	SGD 14.25
Days to Ship:	8 Day(s)

Hex Nut “Hyper Load Nut”

Hex Nut “Hyper Load Nut”【1-7 Pieces Per Package】

TRUSCO NAKAYAMA

[Features]
● The nut’s built-in spring prevents loosening and falling.
● Mounting is easy as it can be used in the same manner as a standard nut.
● Performance is maintained even if it is repeatedly used.
● Perfect for fastening points on soft materials such as resin and rubber.

Standard Price:	SGD 14.25
Days to Ship:	8 Day(s)

K Nut with Washer

K Nut with Washer【80-1,000 Pieces Per Package】

KFC

[Features]
● Friction rings apply firm pressure on the screw threads when tightening, with an excellent anti-loosening effect
● Simplifies work processes and material management
● Passes tests specified in NASA standards NAS3350 and NAS3354

[Applications]
● Locations subject to constant vibration, such as roads and railroads
● Hanging ceiling bolts and ceiling racks
● Mounting support brackets for cables

Standard Price:	SGD 166.40-
Days to Ship:	4 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:	4 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 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

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

Anti-Loosening Hyper Load Nut EA949LV-512

Anti-Loosening Hyper Load Nut EA949LV-512【4 Pieces Per Package】

ESCO

【Product Specifications】
・Material-Iron (trivalent chromium)
・Size(mm)-M12
・Qty. per unit-4 pcs

Standard Price:	SGD 18.94
Days to Ship:	8 Day(s) or more

Anti-Loosening Hyper Load Nut EA949LV-516

Anti-Loosening Hyper Load Nut EA949LV-516【2 Pieces Per Package】

ESCO

【Product Specifications】
・Material-Iron (trivalent chromium)
・Size(mm)-M16
・Qty. per unit-2 pcs

Standard Price:	SGD 15.80
Days to Ship:	7 Day(s) or more

Anti-Loosening Hyper Load Nut EA949LV-520

Anti-Loosening Hyper Load Nut EA949LV-520【2 Pieces Per Package】

ESCO

【Product Specifications】
・Material-Iron (trivalent chromium)
・Size(mm)-M20
・Qty. per unit-2 pcs

Standard Price:	SGD 22.60
Days to Ship:	7 Day(s) or more

W Pull Screw

W Pull Screw【50-100 Pieces Per Package】

OHSATO

Stainless Steel Nylon Nut

Standard Price:	SGD 21.05-
Days to Ship:	11 Day(s)

Hex Nut, MS4 Series

FESTO

Standard Price:	SGD 8.60
Days to Ship:	8 Day(s)


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


Brand	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	FUJI SEIMITSU	YAHATA	YAHATA	TRUSCO NAKAYAMA	TRUSCO NAKAYAMA	KFC	KFC	SUNCO	SUNCO	SUNCO	ESCO	ESCO	ESCO	OHSATO	FESTO
Product Series	U Nut Type 1 (Fine Details)【1-65 Pieces Per Package】	U Nut Type 2【1-600 Pieces Per Package】	U Nut Type 2 (Fine Details)【1-120 Pieces Per Package】	Left-Handed U-Nut【1-3,000 Pieces Per Package】	Specialized U-Nut Pitch of 1.5	U Nut Thin Special Pitch P=1.5	U Nut Type 3【1-4,000 Pieces Per Package】	Fine Welded U-Nut	Wedge Nut Type A (Stainless Steel) (Pack Product)	Wedge Nut Type F (Iron/Trivalent Chromate) (Pack Product)	Hex Nut "Hard Lock Nut" (with Rim/Trivalent Chromate)【1-15 Pieces Per Package】	Hex Nut “Hyper Load Nut”【1-7 Pieces Per Package】	K Nut with Washer【80-1,000 Pieces Per Package】	Locking K Nut【25-1,000 Pieces Per Package】	U Nut (Whit)	U Nut (Fine P=1.5)	Stable Nut Thin Type【400 Pieces Per Package】	Anti-Loosening Hyper Load Nut EA949LV-512【4 Pieces Per Package】	Anti-Loosening Hyper Load Nut EA949LV-516【2 Pieces Per Package】	Anti-Loosening Hyper Load Nut EA949LV-520【2 Pieces Per Package】	W Pull Screw【50-100 Pieces Per Package】	Hex Nut, MS4 Series
CAD
Days to Ship	4 Day(s) or more	4 Day(s) or more	Same day or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	4 Day(s) or more	9 Day(s) or more	9 Day(s) or more	8 Day(s)	8 Day(s)	4 Day(s) or more	4 Day(s) or more	7 Day(s) or more	7 Day(s) or more	7 Day(s) or more	8 Day(s) or more	7 Day(s) or more	7 Day(s) or more	11 Day(s)	8 Day(s)
Nominal of Thread (M)	8 ～ 27	10 ～ 36	10 ～ 56	6 ～ 20	12 ～ 27	12	4 ～ 20	10 ～ 12	4 ～ 12	4 ～ 12	6 ～ 20	8 ～ 20	5 ～ 16	5 ～ 24	-	12 ～ 30	10	-	-	-	3 ～ 6	-
Material	Stainless Steel ～ Steel	Steel	Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Stainless Steel ～ Steel	Steel	Stainless Steel	Steel	Steel	Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Steel	Steel	-	-	-	Stainless Steel	-
Applications, Functions	Lock	Lock	Lock	Lock	Lock	Lock	Lock	For Welding	Lock	Lock	Fall-off Prevention	Fall-off Prevention	Lock	Lock	Standard	Lock	Lock	-	-	-	-	-
Thread Type	Metric, Fine	Metric, Coarse	Metric, Fine	Metric, Coarse (Left)	Metric, Fine	Metric, Fine	Metric, Coarse	Metric, Fine	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Whit, Coarse	Metric, Fine	Metric, Coarse	-	-	-	-	-
Surface Treatment	-	-	-	-	-	-	-	-	Not Provided	Trivalent Chromate	-	-	Not Provided / Zinc Plating	Not Provided / Zinc Plating	Bright Chrome Plating / Chromate Plating	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate	-	-	-	-	-
Sales Unit	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.) ～ Box, Pkg.	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.	Box, Pkg.	-	-	Box, Pkg.	Box, Pkg.	Low Quantity (Available beginning with 1 pc.)	Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg.	Box, Pkg.	-	-	-	Box, Pkg.	-
Locking Details	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	U Nut	Other Special Shapes	Other Special Shapes	Hard Lock Nut	Hard Lock Nut	Other Special Shapes	Friction Nut	-	U Nut	Friction Nut	-	-	-	Nylon Nut	-
Nominal of Thread (inch)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-	-	-
Surface Treatment (Details)	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 / Chromate Plating	Not Provided	Not Provided	Trivalent Chromate	Trivalent Chromate	Trivalent Chromate	Not Provided / Hot Zinc Plating	Not Provided / Hot Zinc Plating	Bright Chrome Plating / Chromate Plating	Trivalent Chromate / Bright Chrome Plating	Trivalent Chromate	-	-	-	-	-
Hex Nut Type	Class 1 ～ Class 2	Class 2	Class 2	-	-	-	Class 3	-	-	-	-	-	Class 1	Class 1	Class 1	Class 2	-	-	-	-	-	-