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

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Lock Nuts（Locking Details：Hard Lock Nut）

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.

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Brand	(2) (0) ESCO (0) FORTUNE BRIGHT (0) FUJI SEIMITSU (0) HARDLOCK INDUSTRY (6) KFC (0) KHI (0) KISHU FASTENER (0) KST (0) LOCKFASTENER (0) NABEYA BI-TECH (0) SAIMA CORPORATION (0) SAKAMURA (0) SATO RASHI (0) SOHWA SEISAKUSHO (0) SUNCO (5) TOMOE KOGYO (0) TRUSCO NAKAYAMA (1) YAHATA (0)
CAD	2D 3D
Days to Ship	All Same day 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less Others

14 items

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: 30; 45; 60

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Double Locking Nut - Hard Lock Nut

MISUMI

[Features]
[Materials] SS400 equivalent, SUS304 equivalent, S45C equivalent, SCM435 equivalent.
[Surface treatment] Trivalent chromate.
[Height (mm)] 8, 10.6, 13.2, 16, 18.5, 20.

Volume Discount

CAD ：: 2D / 3D

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
6 ～ 16	Stainless Steel ～ Steel	Lock	Metric, Coarse	Not Provided / Trivalent Chromate	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Not Provided / Trivalent Chromate	-

From: ₹ 39.93
Days to Ship: Same day or more

Same day or more

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Fine Hard Locking Nut

HARDLOCK INDUSTRY

Nut that uses the principle of the wedge. Bolts and nuts are integrated, and any kinds of vibration and shock are kept away.

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
8 ～ 36	Stainless Steel ～ Steel	Lock	Metric, Fine	Not Provided / Trivalent Chromate	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Not Provided / Trivalent Chromate	-

From: ₹ 160.80
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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H-1 Rimmed Hard Locking Nut【1-300 Pieces Per Package】

HARDLOCK INDUSTRY

A new standard in hard lock nuts. Mountability greatly improved by stopping concave nuts using the rim shape (flange).

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
5 ～ 30	Stainless Steel ～ Steel	Lock	Metric, Coarse	Trivalent Chromate / Parkerizing / Painting, Coating	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Hard Lock Nut	-	Seizure-Against Coating / Not Provided / Trivalent Chromate / Hot Zinc Plating / Parkerizing	-

From: ₹ 59.36
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Thin Hard Locking Nut

HARDLOCK INDUSTRY

Nut that uses the principle of the wedge. Bolts and nuts are integrated, and any kinds of vibration and shock are kept away.

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
16 ～ 36	Stainless Steel ～ Steel	Lock	Metric, Coarse	Not Provided / Trivalent Chromate	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Not Provided / Trivalent Chromate	-

From: ₹ 322.35
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Hard Locking Bearing Nuts (Thin)

SUNCO

[Material] Steel/S45C/Stainless Steel
[Surface Processing] Trivalent White / Molten Zinc Plating / Parkerizing (Phosphate Coating) / None
[Nominal of Thread (M)] 16/20/22/24/27/36
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse / Metric Fine
[Loosening Prevention Details] Hard Lock Nut

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
16 ～ 36	Stainless Steel ～ Steel	Lock	Metric, Coarse / Metric, Fine	Trivalent Chromate / Zinc Plating / Parkerizing	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Other Special Treatment / Trivalent Chromate / Hot Zinc Plating	-

From: ₹ 379.20
Days to Ship: 6 Day(s) or more

6 Day(s) or more

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HARDLOCK Nut (Fine Thread)

SUNCO

[Material] Stainless steel/S45C
[Surface Processing] None / Trivalent White / Parkerizing (Phosphate Coating)
[Nominal of Thread (M)] 10/14/16/18/20/24/30
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Fine
[Loosening Prevention Details] Hard Lock Nut

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
10 ～ 30	Stainless Steel ～ Steel	Lock	Metric, Fine	Trivalent Chromate / Parkerizing	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Other Special Treatment / Trivalent Chromate	-

From: ₹ 188.80
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Hard Lock Nut【1-200 Pieces Per Package】

SUNCO

[Shape] Upper nut (convex type) and lower nut (concave type) are available.
· The top nut is perfectly circular with respect to the bolt, but the bottom nut has been eccentrically machined off-center with respect to the bolt.
[Features] Since the lower nut is eccentric, tightening the upper nut will apply a lateral force due to the wedging action. Friction to this male thread prevents loosening.
· Can be manually tightened to your desired position.
· Can be used repeatedly.

[Material] Steel/S45C/SCM435 (H)
[Surface Processing] Parkerizing (Phosphate Coating) / Trivalent White
[Nominal of Thread (M)] 8/10/12/14/16/18/22/24/30/33/36/39/45/48/52/56/64
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Loosening Prevention Details] Hard Lock Nut

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
14 ～ 18	Steel	Lock	Metric, Coarse	Parkerizing	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Hard Lock Nut	-	Other Special Treatment	-

From: ₹ 300.80
Days to Ship: 6 Day(s) or more

6 Day(s) or more

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[Clean & Pack] Double Locking Nut

MISUMI

Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.

■Part Number for Clean & Pack Products

·Degreasing (Anti-rust single packing)	: Part Number SL-□□
·Precision cleaning (Degassing double packing)	: Part Number SH-□□
·Electrolytic polishing + precision cleaning (Degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.

Volume Discount

CAD ：: 2D / 3D

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
-	Steel	Standard / m / n	Metric, Coarse	-	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	-	-

From: ₹ 241.34
Days to Ship: 10 Day(s) or more

10 Day(s) or more

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Semi-Flat Hard Locking Nut

HARDLOCK INDUSTRY

Nut that uses the principle of the wedge. Bolts and nuts are integrated, and any kinds of vibration and shock are kept away.

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
36 ～ 48	Stainless Steel ～ Steel	Lock	Metric, Coarse	Not Provided / Trivalent Chromate	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Not Provided / Trivalent Chromate	-

From: ₹ 3,164.80
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Hardlock Nut (Thread-Lock Nut)【1-150 Pieces Per Package】

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.

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
6 ～ 64	Brass ～ Steel	Lock	Metric, Coarse	Trivalent Chromate / Nickel Plating / Parkerizing	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Hard Lock Nut	-	Not Provided / Trivalent Chromate / Hot Zinc Plating / Nickel Plating / Parkerizing	-

From: ₹ 209.56
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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HARDLOCK Nut (H-1/with Rim)

SUNCO

[Material] Steel/Stainless Steel
[Surface Processing] Bright Chromate Plating / Trivalent White / None
[Nominal of Thread (M)] 5/6/22/30
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Loosening Prevention Details] Hard Lock Nut

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
24	Steel	Lock	Metric, Coarse	Trivalent Chromate	Low Quantity (Available beginning with 1 pc.)	Hard Lock Nut	-	Trivalent Chromate	-

From: ₹ 2,496.00
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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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

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
6 ～ 20	Steel	Fall-off Prevention	Metric, Coarse	-	-	Hard Lock Nut	-	Trivalent Chromate	-

From: ₹ 68.16
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Whitworth Hard Locking Nut

HARDLOCK INDUSTRY

Nut that uses the principle of the wedge. Bolts and nuts are integrated, and any kinds of vibration and shock are kept away.

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
-	Stainless Steel ～ Steel	Lock	Whit, Coarse	Not Provided / Trivalent Chromate / Zinc Plating	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.	Hard Lock Nut	1 ～ 5/8	Not Provided / Trivalent Chromate / Hot Zinc Plating	-

From: ₹ 164.02
Days to Ship: 5 Day(s) or more

5 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

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

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
-	Steel	Lock	Whit, Coarse	Parkerizing	Box, Pkg.	Hard Lock Nut	1 ～ 7/8	Other Special Treatment	-

From: ₹ 512.00
Days to Ship: 6 Day(s) or more

6 Day(s) or more


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.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	MISUMI	HARDLOCK INDUSTRY	HARDLOCK INDUSTRY	HARDLOCK INDUSTRY	SUNCO	SUNCO	SUNCO	MISUMI	HARDLOCK INDUSTRY	HARDLOCK INDUSTRY	SUNCO	TRUSCO NAKAYAMA	HARDLOCK INDUSTRY	SUNCO
Product Series	Double Locking Nut - Hard Lock Nut	Fine Hard Locking Nut	H-1 Rimmed Hard Locking Nut【1-300 Pieces Per Package】	Thin Hard Locking Nut	Hard Locking Bearing Nuts (Thin)	HARDLOCK Nut (Fine Thread)	Hard Lock Nut【1-200 Pieces Per Package】	[Clean & Pack] Double Locking Nut	Semi-Flat Hard Locking Nut	Hardlock Nut (Thread-Lock Nut)【1-150 Pieces Per Package】	HARDLOCK Nut (H-1/with Rim)	Hex Nut "Hard Lock Nut" (with Rim/Trivalent Chromate)【1-15 Pieces Per Package】	Whitworth Hard Locking Nut	HARDLOCK Nut (Whitworth)【40-100 Pieces Per Package】
CAD	2D / 3D							2D / 3D
From	₹ 39.93	₹ 160.80	₹ 59.36	₹ 322.35	₹ 379.20	₹ 188.80	₹ 300.80	₹ 241.34	₹ 3,164.80	₹ 209.56	₹ 2,496.00	₹ 1,022.36	₹ 164.02	₹ 28,179.20
Days to Ship	Same day or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	6 Day(s) or more	5 Day(s) or more	6 Day(s) or more	10 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	6 Day(s) or more
Nominal of Thread (M)	6 ～ 16	8 ～ 36	5 ～ 30	16 ～ 36	16 ～ 36	10 ～ 30	14 ～ 18	-	36 ～ 48	6 ～ 64	24	6 ～ 20	-	-
Material	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Steel	Stainless Steel ～ Steel	Brass ～ Steel	Steel	Steel	Stainless Steel ～ Steel	Steel
Applications, Functions	Lock	Lock	Lock	Lock	Lock	Lock	Lock	Standard / m / n	Lock	Lock	Lock	Fall-off Prevention	Lock	Lock
Thread Type	Metric, Coarse	Metric, Fine	Metric, Coarse	Metric, Coarse	Metric, Coarse / Metric, Fine	Metric, Fine	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Whit, Coarse	Whit, Coarse
Surface Treatment	Not Provided / Trivalent Chromate	Not Provided / Trivalent Chromate	Trivalent Chromate / Parkerizing / Painting, Coating	Not Provided / Trivalent Chromate	Trivalent Chromate / Zinc Plating / Parkerizing	Trivalent Chromate / Parkerizing	Parkerizing	-	Not Provided / Trivalent Chromate	Trivalent Chromate / Nickel Plating / Parkerizing	Trivalent Chromate	-	Not Provided / Trivalent Chromate / Zinc Plating	Parkerizing
Sales Unit	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.)	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.)	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.	Box, Pkg.
Locking Details	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut	Hard Lock Nut
Nominal of Thread (inch)	-	-	-	-	-	-	-	-	-	-	-	-	1 ～ 5/8	1 ～ 7/8
Surface Treatment (Details)	Not Provided / Trivalent Chromate	Not Provided / Trivalent Chromate	Seizure-Against Coating / Not Provided / Trivalent Chromate / Hot Zinc Plating / Parkerizing	Not Provided / Trivalent Chromate	Other Special Treatment / Trivalent Chromate / Hot Zinc Plating	Other Special Treatment / Trivalent Chromate	Other Special Treatment	-	Not Provided / Trivalent Chromate	Not Provided / Trivalent Chromate / Hot Zinc Plating / Nickel Plating / Parkerizing	Trivalent Chromate	Trivalent Chromate	Not Provided / Trivalent Chromate / Hot Zinc Plating	Other Special Treatment
Hex Nut Type	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Configure

Specification/Dimensions

Nominal of Thread (M)
2

2.6

3

4

5

6

8

10

M10x0.75

12

M12x1.0

14

M15x1.0

16

M17x1.0

18

20

M20x1.0

22

24

M25x1.5

27

30

M30x1.5

33

M35x1.5

36

39

M40x1.5

42

45

M45x1.5

48

M50x1.5

52

56

60

64

M95x2.0

M100x2.0

M105x2.0

M110x2.0

M115x2.0

M120x2.0

M125x2.0

M130x2.0

M135x2.0

M140x2.0

M145x2.0

M150x2.0
Clear

Material
Brass

Brass

Stainless Steel

Steel

Titanium
Clear

Applications, Functions
- Standard
- Lock
- For Welding
- Fall-off Prevention
Clear

Thread Type
- Metric, Coarse
- Metric, Coarse (Left)
- Metric, Fine
- Unified, Coarse (UNC)
- Unified, Fine (UNF)
- Whit, Coarse
Clear

Surface Treatment
- Not Provided
- Electroless Nickel Plating
- Trivalent Chromate
- Bright Chrome Plating
- Zinc Plating
- Chromate Plating
- Nickel Plating
- Parkerizing
- Polishing
- Painting, Coating
- Passivated
Clear

Sales Unit
- Low Quantity (Available beginning with 1 pc.)
- Box, Pkg.
Clear

Locking Details
- U Nut
- Hard Lock Nut
- Friction Nut
- Nylon Nut
- Spring Nut
- Other Special Shapes
Clear

Nominal of Thread (inch)
1

1 1/8

1/2

1/4

No. 2

3/4

3/8

No. 4

5/8

5/16

No. 6

7/8

7/16

No. 8

No. 10

No. 12
Clear

Surface Treatment (Details)
- Not Provided
- Electroless Nickel Plating
- Trivalent Chromate
- Bright Chrome Plating
- Hot Zinc Plating
- Chromate Plating
- Nickel Plating
- Parkerizing
- Barrel, Passivated
- Special Chemical Grinding
- Black Paint
- Seizure-Against Coating
- Other Special Treatment
Clear

Hex Nut Type
Class 1

Class 2

Class 3
Clear

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Lock Nuts（Locking Details：Hard Lock Nut）

Configure

Specification/Dimensions

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

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