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Lock Nuts（Surface Treatment：Chromate Plating）
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.
Configure
Specification/Dimensions
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Nominal of Thread (M)
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Material
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Applications, Functions
- Standard
- Lock
- For Welding
- Fall-off Prevention
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Thread Type
- Metric, Coarse
- Metric, Coarse (Left)
- Metric, Fine
- Unified, Coarse (UNC)
- Unified, Fine (UNF)
- Whit, Coarse
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Surface Treatment
- Not Provided
- Electroless Nickel Plating
- Trivalent Chromate
- Bright Chrome Plating
- Zinc Plating
- Chromate Plating
- Nickel Plating
- Chrome Plating
- Parkerizing
- Polishing
- Painting, Coating
- Passivated
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Sales Unit
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Locking Details
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Nominal of Thread (inch)
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Surface Treatment (Details)
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Hex Nut Type
Brand |
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- 27 items
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025U Nut Class 1 and 2 (Steel/SUS304)【1-1,000 Pieces Per Package】
FUJI SEIMITSU
Definitive edition of Locking NutsFrom: ฿ 21.29 Special Price Days to Ship: 
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Nylon Nut Type 1【1-3,000 Pieces Per Package】
SUNCO
[Shape]
· Nylon ring is caulked on the outlet side of the nut.
· Nylon material is 66 nylon.
[Features]
· When the nut is tightened, a male thread is made on the nylon ring, and the friction of that part creates a locking effect.
· There is little torque drop even after repeated use.
· Because it is nylon, it will not damage the bolt.
· Can be used at -40 °C to 120 °C
[Materials] S45C, Equivalent to steel SWCH, SUS303, Titanium, Brass.
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate plating, nickel plating
[Nominal designation of screw (M)] 1/2/2.6/3/4/5/6/8/10/12/14/16/16/18/20/22/24/27/30/33/36
[Application/Function] Prevents loosening
[Type of screw thread] Metric coarse.
[Details of locking] Nylon nutFrom: ฿ 3.10 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Self-Locking Nut【50 Pieces Per Package】
KST
The friction ring swaged on the top of the nut engages with the thread of the bolt, providing a high-performance loosening prevention function. Since no special tool is required for linking, workability is excellent.From: ฿ 2,986.67 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Hardlock Nut (Thread-Lock Nut)
HARDLOCK INDUSTRY
Some sizes are no longer available as they have been redesigned as a rimmed type. Please see the rimmed type if the size you are looking for is not available.
[Features]
・ Anti-loosening effect recognized by the world.
・ Torque and axial force control is possible.
・ Can be used repeatedly.
・ Workability is simple and good.
・ Contributes to significant cost reduction.From: ฿ 82.86 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Lead Lock Nut【80-7,000 Pieces Per Package】
SUNCO
If necessary, it can be removed when required, and it does not become loose even it is shaken intensely during use, the lead lock nut is a product that resolves this contradictory duality well.From: ฿ 2,709.68 Special Price Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
Nylon Nut (Type 1) (Iron / Brass)【1-3,000 Pieces Per Package】
TOMOE KOGYO
Frictional force generated between the nylon ring and the screw part of the bolt reduces shock and vibration, and prevents the screw from loosening.From: ฿ 5.80 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Flanged Lead Lock Nut【400-1,500 Pieces Per Package】
SUNCO
Lead lock nut which is easy to remove while remaining secure even when subjected to strong shaking force.From: ฿ 3,870.97 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Nylon Nut (Type 2)【1-2,000 Pieces Per Package】
TOMOE KOGYO
Frictional force generated between the nylon ring and the screw part of the bolt reduces shock and vibration and prevents the screw from loosening.From: ฿ 6.77 Special Price Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025SUNCO
[Materials] Equivalent to SWCH, Equivalent to SUS304.
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate plating, nickel plating.
[Nominal designation of screw (M)] 5/6/8/10/12/12.
[Application/Function] Prevents loosening.
[Type of screw thread] Metric coarse.
[Details of locking] Nylon nut.From: ฿ 6.72 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Nylon Nut Class 1 Fine【1-200 Pieces Per Package】
SUNCO
[Materials] Steel S45C SWCH equivalent SUS304 equivalent
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate platingFrom: ฿ 34.06 Special Price Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
Nylon Nut Class 1 Small【500 Pieces Per Package】
SUNCO
[Materials] Equivalent to SWCH, Equivalent to SUS304
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate platingFrom: ฿ 2,601.15 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Nylon Nut (Type 1, Fine Details)【1-200 Pieces Per Package】
TOMOE KOGYO
Frictional force generated between the nylon ring and the screw part of the bolt reduces shock and vibration and prevents the screw from loosening.From: ฿ 89.53 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025SUNCO
Thin U nut with metal ring locking function.
[Features]
· U nut made from two points: the nut body and friction ring (special spring).
· The friction ring is fixed on the upper surface of the nut by crimping and integrated.
[Applications]
· Active in all industries from steel structures such as railways and connecting bridges to cars, motorcycles, and industrial machinery.
[Materials] Steel
[Surface Processing] Chromate Plating/Trivalent White/Trivalent Black
[Nominal of Thread (M)] 4/10/12/14/16/20/24
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Loosening Prevention Details] U NutFrom: ฿ 61.72 Special Price Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Stable Nut, Thin Type (Friction Nut)【400 Pieces Per Package】
SOHWA SEISAKUSHO
[Materials] SWCH equivalent, SUS304 equivalent.
[Surface treatment] None, Trivalent chromate, bright chromate plating chromate plating.From: ฿ 6,967.74 Days to Ship:
14 Day(s)
14 Day(s)
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Nylon Nut Class 1 Small and Fine【1-150 Pieces Per Package】
SUNCO
[Materials] Equivalent to SWCH/Equivalent to SUS304
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate platingFrom: ฿ 10.60 Special Price Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Triple Lock【90-1,300 Pieces Per Package】
KISHU FASTENER
Prevailing lock nut. Mainly used on automobiles, load-carrying trays, casters, etc.From: ฿ 1,393.55 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Nylon Nut (Type 1, Small Size)【500 Pieces Per Package】
TOMOE KOGYO
Frictional force generated between the nylon ring and the screw part of the bolt reduces shock and vibration and prevents the screw from loosening.From: ฿ 2,601.15 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Spring Nut【100-2,000 Pieces Per Package】
SAKAMURA
A nut in which a spring washer (conical spring washer) is swaged and integrated. It can reduce embedding time.From: ฿ 1,393.55 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
V-Lock Nut【25-4,000 Pieces Per Package】
KISHU FASTENER
Double Locking Nut - Definitive Edition Mainly used for light electrical appliances, housing, fences, buildings, etc.From: ฿ 2,705.42 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
V-Lock Nut (Fine Thread)【200-300 Pieces Per Package】
KISHU FASTENER
The definitive double locking nut with fine threads. Mainly used for light electrical appliances, housing, fences, buildings, etc.From: ฿ 3,479.23 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Small Three Lock【700 Pieces Per Package】
KISHU FASTENER
Small version of prevailing lock nuts. Mainly used on automobiles, load-carrying trays, casters, etc.From: ฿ 5,035.57 Days to Ship:
5 Day(s)
5 Day(s)
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You can add up to 6 items per a category to the compare list.
Small (Fine Thread) Triple Lock【400 Pieces Per Package】
KISHU FASTENER
Small (fine thread) version of prevailing lock nuts. Mainly used on automobiles, load-carrying trays, casters, etc.From: ฿ 2,228.16 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Fine Triple Lock【300 Pieces Per Package】
KISHU FASTENER
Fine-threaded prevailing torque nut. Mainly for automotive use, and for loading platforms and casters, etc.From: ฿ 1,927.34 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Iron and Stainless Steel Stable Nut【50-2,000 Pieces Per Package】
SOHWA SEISAKUSHO
Suitable for the fastening of soft or fragile materials. Capable of performing an intermediate lock. Does not require a spring lock washer, either.From: ฿ 3,580.65 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
Stable Nut, Thin Shape【400 Pieces Per Package】
SOHWA SEISAKUSHO
Suitable for the fastening of soft or fragile materials. Capable of performing an intermediate lock. Does not require a spring lock washer, either.From: ฿ 6,967.74 Days to Ship:
13 Day(s)
13 Day(s)
-
You can add up to 6 items per a category to the compare list.
Nylon Nut (Type 1 / Small / Fine)【1-150 Pieces Per Package】
TOMOE KOGYO
Nut comprises a metal main body together with a nylon ring (Nylon 66) that functions as a locking mechanism. (Fine)
[Features]
· Nylon 66 provides high rigidity, heat resistance and wear resistance, and also possesses excellent elasticity.
· Nylon 66 maintains performance even under conditions that would be extreme for metals, and will not corrode like metals.
· The internal diameter of the nylon ring is designed to standard to be the same dimension as the effective diameter of the nut's screw thread.
· An external thread is formed to adhere closely to the nylon ring by fitting together with the external thread of the bolt, generating fitting friction in that portion.
· This friction generates torque that prevents loosening of the nut caused by rotational vibration, linear vibration and impact, etc. applied from all directions.
[Applications]
· Aircraft, highway sound insulation walls, boats, etc.From: ฿ 27.62 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
SUNCO
A locking nut used in combination with a normal nut. Does not get loose due to vibration and shock.
It is easy to attach and remove, reusable, no change in effectiveness.From: ฿ 7.46 Days to Ship:
5 Day(s)
5 Day(s)
| Brand |
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| Product Series |
| CAD |
| From |
| 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 |
You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | FUJI SEIMITSU | SUNCO | KST | HARDLOCK INDUSTRY | SUNCO | TOMOE KOGYO | SUNCO | TOMOE KOGYO | SUNCO | SUNCO | SUNCO | TOMOE KOGYO | SUNCO | SOHWA SEISAKUSHO | SUNCO | KISHU FASTENER | TOMOE KOGYO | SAKAMURA | KISHU FASTENER | KISHU FASTENER | KISHU FASTENER | KISHU FASTENER | KISHU FASTENER | SOHWA SEISAKUSHO | SOHWA SEISAKUSHO | TOMOE KOGYO | SUNCO |
| Product Series | U Nut Class 1 and 2 (Steel/SUS304)【1-1,000 Pieces Per Package】 | Nylon Nut (Type 1) (Iron / Brass)【1-3,000 Pieces Per Package】 | Stable Nut, Thin Type (Friction Nut)【400 Pieces Per Package】 | Iron and Stainless Steel Stable Nut【50-2,000 Pieces Per Package】 | |||||||||||||||||||||||
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| From | ฿ 21.29 Special Price On Sale Until 31/03/2025 | ฿ 3.10 Special Price On Sale Until 31/03/2025 | ฿ 2,986.67 Special Price On Sale Until 31/03/2025 | ฿ 82.86 Special Price On Sale Until 31/03/2025 | ฿ 2,709.68 Special Price On Sale Until 31/03/2025 | ฿ 5.80 | ฿ 3,870.97 | ฿ 6.77 Special Price On Sale Until 31/03/2025 | ฿ 6.72 Special Price On Sale Until 31/03/2025 | ฿ 34.06 Special Price On Sale Until 31/03/2025 | ฿ 2,601.15 | ฿ 89.53 | ฿ 61.72 Special Price On Sale Until 31/03/2025 | ฿ 6,967.74 | ฿ 10.60 Special Price On Sale Until 31/03/2025 | ฿ 1,393.55 | ฿ 2,601.15 | ฿ 1,393.55 | ฿ 2,705.42 | ฿ 3,479.23 | ฿ 5,035.57 | ฿ 2,228.16 | ฿ 1,927.34 | ฿ 3,580.65 | ฿ 6,967.74 | ฿ 27.62 | ฿ 7.46 |
| Days to Ship | Same day | Same day | Same day | Same day | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | Same day | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 14 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 5 Day(s) | 13 Day(s) | 5 Day(s) | 5 Day(s) |
| Nominal of Thread (M) | 6 ～ 45 | 2 ～ 24 | 20 | 10 | 3 ～ 16 | 2 ～ 24 | 5 ～ 8 | 5 ～ 12 | 6 ～ 10 | 10 ～ 16 | 8 | 10 ～ 16 | 14 | 10 | 10 ～ 12 | 6 ～ 16 | 8 | 4 ～ 12 | 4 ～ 24 | 10 ～ 12 | 8 | 10 | 10 | 4 ～ 20 | 10 | 10 ～ 12 | - |
| Material | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel | Steel |
| Applications, Functions | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Lock | Standard |
| Thread Type | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Fine | Metric, Fine | Metric, Coarse | Metric, Coarse | Metric, Fine | Whit, Coarse |
| Surface Treatment | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating |
| Sales Unit | Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg. | Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg. | Box, Pkg. | Low Quantity (Available beginning with 1 pc.) | Box, Pkg. | Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg. | 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. | 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. | Box, Pkg. | - | Box, Pkg. | Box, Pkg. | Box, Pkg. | Box, Pkg. | Box, Pkg. | Box, Pkg. | Box, Pkg. | Box, Pkg. | - | Low Quantity (Available beginning with 1 pc.) |
| Locking Details | U Nut | Nylon Nut | Friction Nut | Hard Lock Nut | Friction Nut | Nylon Nut | Friction Nut | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | U Nut | Friction Nut | Nylon Nut | Other Special Shapes | Nylon Nut | Spring Nut | Friction Nut | Friction Nut | Other Special Shapes | Other Special Shapes | Other Special Shapes | Friction Nut | Friction Nut | Nylon Nut | - |
| Nominal of Thread (inch) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1/2 ～ 5/8 |
| Surface Treatment (Details) | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Other Special Treatment / Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating | Chromate Plating |
| Hex Nut Type | Class 1 ～ Class 2 | Class 1 | - | - | Class 1 ～ Class 2 | Class 1 | Class 2 | Class 2 | Class 2 | Class 1 | Class 1 | Class 1 | - | - | Class 1 | - | Class 1 | - | Class 1 ～ Class 2 | - | - | - | - | Class 1 ～ Class 2 | Class 3 | Class 1 | - |
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