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Lock Nuts（Hex Nut Type：Class 1）
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.
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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
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- 24 items
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Until 31/03/2025
Until 31/03/2025U Nut Class 1 and 2 (Steel/SUS304)【1-125 Pieces Per Package】
FUJI SEIMITSU
Definitive edition of Locking NutsFrom: ฿ 56.13 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 31/03/2025Nylon Nut (Type 1)【1-12 Pieces Per Package】
LOCKFASTENER
The included nylon ring is fitted with a male screw to prevent loosening due to rotation applied from various directions, direct vibration, and shock.From: ฿ 24.00 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.
From: ฿ 17.20 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 31/03/2025Lead Lock Nut【80 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: ฿ 2,299.11 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.
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.
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.From: ฿ 104.90 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 31/03/2025Nylon Nut Class 1 Fine【1-500 Pieces Per Package】
SUNCO
[Materials] Steel S45C SWCH equivalent SUS304 equivalent
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate platingFrom: ฿ 7.90 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.
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 cablesFrom: ฿ 4,283.69 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
A hexagonal nylon nut with a unified UNC unified screw.
[Features]
· Nylon is attached to the top of the hexagon nut to fulfill the loosening prevention function and can be used repeatedly without damaging the mating material.
[Applications]
· Ideal for American cars and motorcycles.
[Materials] Equivalent to SWCH, Equivalent to SUS304.
[Surface treatment] None, bright chromate plating.From: ฿ 6.58 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.
Nylon Nut Class 1 Small【1-500 Pieces Per Package】
SUNCO
[Materials] Equivalent to SWCH, Equivalent to SUS304
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate platingFrom: ฿ 7.50 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: ฿ 16.30 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 (UNF / Unified Fine Threads)
TOMOE KOGYO
UNF (Unified fine threads), hex nylon nut. [Materials]Steel "Surface Treatment" bright chromate plating "Screw thread type" unified fine UNFFrom: ฿ 36.19 Days to Ship:
6 Day(s)
6 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:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Nylon Nut (Class 1) (Small) (Fine) Pitch 1.25 mm
LOCKFASTENER
Frictional force generated between the nylon ring and the thread section of the bolt reduces shock and vibration, and prevents the screw from getting loose.From: ฿ 128.39 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)【1-500 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: ฿ 19.05 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
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 cablesFrom: ฿ 4,113.63 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 Unified (UNF)【1-250 Pieces Per Package】
SUNCO
[Materials] Equivalent to SWCH, Equivalent to SUS304
[Surface treatment] None, bright chromate platingFrom: ฿ 6.60 Days to Ship:
5 Day(s)
5 Day(s)
-
You can add up to 6 items per a category to the compare list.
V-Lock Nut【1-90 Pieces Per Package】
KISHU FASTENER
Double Locking Nut - Definitive Edition Mainly used for light electrical appliances, housing, fences, buildings, etc.From: ฿ 43.81 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【1-120 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: ฿ 137.03 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)【1-500 Pieces Per Package】
LOCKFASTENER
When the internal nylon ring mates with a male screw, loosening as a result of rotation in any direction, linear vibration, or shock is avoided.From: ฿ 125.18 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)
LOCKFASTENER
The included nylon ring is fitted with a male screw to prevent loosening due to rotation applied from various directions, direct vibration, and shock.From: ฿ 77.81 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 / 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.
From: ฿ 25.72 Days to Ship:
5 Day(s)
5 Day(s)
| Brand |
|---|
| 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.  | 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.  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.  | |
| Brand | FUJI SEIMITSU | SUNCO | LOCKFASTENER | FUJI SEIMITSU | SUNCO | TOMOE KOGYO | FUJI SEIMITSU | SUNCO | KFC | SUNCO | SUNCO | TOMOE KOGYO | TOMOE KOGYO | SUNCO | LOCKFASTENER | TOMOE KOGYO | KFC | SUNCO | KISHU FASTENER | SOHWA SEISAKUSHO | LOCKFASTENER | LOCKFASTENER | TOMOE KOGYO | FUJI SEIMITSU |
| Product Series | U Nut Class 1 and 2 (Steel/SUS304)【1-125 Pieces Per Package】 | Nylon Nut (Type 1) (Iron / Brass)【1-3,000 Pieces Per Package】 | Iron and Stainless Steel Stable Nut【1-120 Pieces Per Package】 | |||||||||||||||||||||
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| From | ฿ 56.13 Special Price On Sale Until 31/03/2025 | ฿ 3.10 Special Price On Sale Until 31/03/2025 | ฿ 24.00 Special Price On Sale Until 31/03/2025 | ฿ 17.20 | ฿ 2,299.11 Special Price On Sale Until 31/03/2025 | ฿ 5.80 | ฿ 104.90 | ฿ 7.90 Special Price On Sale Until 31/03/2025 | ฿ 4,283.69 | ฿ 6.58 Special Price On Sale Until 31/03/2025 | ฿ 7.50 | ฿ 16.30 | ฿ 36.19 | ฿ 10.60 Special Price On Sale Until 31/03/2025 | ฿ 128.39 | ฿ 19.05 | ฿ 4,113.63 | ฿ 6.60 | ฿ 43.81 | ฿ 137.03 | ฿ 125.18 | ฿ 77.81 | ฿ 27.62 | ฿ 25.72 |
| Days to Ship | Same day | Same day | Same day | 5 Day(s) | Same day | 5 Day(s) | 5 Day(s) | Same day | 5 Day(s) | Same day | 5 Day(s) | 5 Day(s) | 6 Day(s) | Same day | 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) |
| Nominal of Thread (M) | 4 ～ 60 | 2 ～ 36 | 2 ～ 36 | 8 ～ 20 | 16 | 2 ～ 30 | 4 ～ 30 | 8 ～ 20 | 5 ～ 16 | - | 8 ～ 10 | 8 ～ 24 | - | 10 ～ 12 | 10 | 8 | 5 ～ 24 | - | 4 ～ 24 | 14 ～ 20 | 8 ～ 12 | 8 | 10 ～ 12 | - |
| Material | Stainless Steel ～ Steel | Brass ～ Titanium | Stainless Steel ～ Titanium | Stainless Steel ～ Steel | Steel | Brass ～ Steel | Stainless Steel | Stainless Steel ～ Steel | Stainless Steel ～ Steel | Stainless Steel ～ Steel | Stainless Steel ～ Steel | Steel | Steel | Stainless Steel ～ Steel | Stainless Steel | Steel | Stainless Steel ～ Steel | Stainless Steel ～ Steel | Stainless Steel ～ Steel | Steel | Stainless Steel | Stainless Steel | Steel | Stainless 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 |
| Thread Type | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Unified, Coarse (UNC) | Metric, Coarse | Metric, Fine | Unified, Fine (UNF) | Metric, Fine | Metric, Fine | Metric, Coarse | Metric, Coarse | Unified, Fine (UNF) | Metric, Coarse | Metric, Coarse | Metric, Fine | Metric, Coarse | Metric, Fine | Whit, Coarse |
| Surface Treatment | Not Provided / Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Painting, Coating | Not Provided / Bright Chrome Plating | - | Not Provided / Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating | - | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Zinc Plating | Bright Chrome Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Bright Chrome Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Zinc Plating | Bright Chrome Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating | Not Provided | Not Provided | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided |
| 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.) ～ 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.) | 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. | - | - | 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.) | - | Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg. |
| Locking Details | U Nut | Nylon Nut | Nylon Nut | U Nut | Friction Nut | Nylon Nut | U Nut | Nylon Nut | Other Special Shapes | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | Nylon Nut | Friction Nut | Nylon Nut | Friction Nut | Friction Nut | Nylon Nut | Nylon Nut | Nylon Nut | U Nut |
| Nominal of Thread (inch) | - | - | - | - | - | - | - | - | - | 1/2 ～ No. 10 | - | - | 1/2 ～ 3/8 | - | - | - | - | 1/2 ～ 5/16 | - | - | - | - | - | 1 ～ 7/8 |
| Surface Treatment (Details) | Not Provided / Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Bright Chrome Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating | Other Special Treatment / Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating | Not Provided | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Hot Zinc Plating | Bright Chrome Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Bright Chrome Plating | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Hot Zinc Plating | Bright Chrome Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating | Not Provided / Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating | Not Provided | Not Provided | Trivalent Chromate / Bright Chrome Plating / Chromate Plating | Not Provided / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating |
| Hex Nut Type | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 | Class 1 |
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