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Clamping Screws Ball Type
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- Volume Discount
- MISUMI offers the C-RSM series of Ball Tips Clamping Screws.
- The main body of the clamping ball screw is made of an equivalent material to 40Cr.
- The ball of the clamping screw is made of SUS440C equivalent.
- The screws are available in five sizes: M3, M4, M5, M6, or M8.
- The thread precision of this product has been verified using commercially available nuts equivalent to GB 6G.
- The front end of the ball is highly hardened, making it resistant to wear. It can be used to clamp the workpiece and adjust its angle.
- RoHS
Part Number
Configured Part Number is shown.
Economy Ball Tip Clamping Screw
- Material: Screw body made of 40Cr equivalent steel, ball made of SUS440C stainless steel.
- Design: Ball-tipped design for versatile clamping and adjustment.
- Size Range: Available in multiple sizes
- Thread Precision: Meets GB 6G standard for accurate fit.
- Hardness: Ball tip hardened to 50-55 HRC for durability.
MISUMI Standard
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Clamping Screws Product Overview
Clamping Screws Product Feature
Feature 2: The angle of the workpiece can be adjusted by adjusting the height of the screw.
Feature 3: The front end ball head of the Economy series Clamping Screws can be rotated.
Feature 4: The hardness of the front end ball head is 50 to 55 HRC, so the workpiece can be repeatedly installed and positioned.
Feature 5: All models are available in stock, allowing same-day shipment.
Clamping Screws Dimensional Drawing
The thread precision of this product has been judged qualified through commercially available nuts equivalent to GB 6G.Clamping Screws Specifications Overview
| Type | Body | Sphere Shape | M | L Selection | |||
| Sphere Shape |  Equivalent material |  Hardness |  Surface Treatment | Material | Hardness | ||
| C-RSM | Equivalent to 40Cr | 48HRC to | Ferroferric Oxide Protective Film | SUS440C | 50 to 55HRC | M3～M8 | 5.2~25.8 |
If there are requirements for rust prevention, give priority to products made of stainless steel SUS304. Please refer to the rust prevention method.Clamping Screws Usage Method
| Product Drawings | Intended Use |
 | Adjust the position movement of the workpiece by adjusting the direction of the Clamping Screws. |
 | Realize the function of guiding and positioning the workpiece through the Clamping Screws. |
Clamping Screws Example of Use
Angle adjustment mechanism using Clamping Screws and steel balls
Mechanism function:
Put the resin case in the inspection position, and check whether the resin case hole is normal through a photoelectric sensor.
The function of the Clamping Screws:
Through the change of the up and down position of the clamping screw, it plays the role of micro-adjusting the emission angle of the photoelectric sensor.
Clamping Screws Related Industries
| Electronic & Electrical Appliances | Smart phone | Medical | ||
 |  |  | ||
| Robotics | Semiconductor | Lithium battery | ||
 |  |  |
Clamping Screws Precautions
② The front end ball head of the Economy series Clamping Screws can be rotated.
③ The corner seat type hemisphere is sometimes spherical instead of flat after rotating. Use tape and magnet when reversed to restore hemisphere rotation. In addition, when you don't want to reverse, please use turning prevention type.
Clamping Screws Related Products
| Adjusting bolt Hex socket on head Knurled knob type | Metal Washers Standard Grade/Precision Grade Custom Size Type | Axle Pin Bolt | ||
 |  |  | ||
| Typical model: AJKTN10-80 | Typical model: FWASB-D15.5-V5.5-T2.6 | Typical model: LMU6 | ||
| Advantages: Positioning by manual adjustment, optional length | Advantages: Matching screws, high precision, multiple types | Advantages: Accurate positioning, high shaft precision |
Clamping Screws Specification Table
■Sphere Shape
| Part Number |  L | d1 | B | ℓ | S | ||||
 Type |  M (Coarse Thread) | ||||||||
| C-RSM Sphere Shape | 3 | 5.2 | 10.2 | 1.5 | 1.5 | 2 | 0.5 | ||
| 4 | 6.5 | 10.5 | 16.5 | 2.38 | 2 | 2.5 | 0.7 | ||
| 5 | 8.6 | 12.6 | 20.6 | 3 | 2.5 | 3 | 0.9 | ||
| 6 | 10.8 | 16.8 | 20.8 | 25.8 | 3.5 | 3 | 3.5 | 1.2 | |
| 8 | 11.2 | 21.2 | 5 | 4 | 5 | 1.7 | |||
Part Number
CAD Data download and 3D preview are not available because the part number has not yet been determined.
- *In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
- Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
| Part Number |
|---|
| C-RSM3-5.2 |
| C-RSM3-10.2 |
| C-RSM4-6.5 |
| C-RSM4-10.5 |
| C-RSM4-16.5 |
| C-RSM5-8.6 |
| C-RSM5-12.6 |
| C-RSM5-20.6 |
| C-RSM6-10.8 |
| C-RSM6-16.8 |
| C-RSM6-20.8 |
| C-RSM6-25.8 |
| C-RSM8-11.2 |
| C-RSM8-21.2 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Thread Dia. | Overall Length L (mm) |
|---|---|---|---|---|---|---|
MYR 1.37 | 1 Piece(s) | Available | 11 Day(s) | 3 | 5.2 | |
MYR 1.52 | 1 Piece(s) | Available | 5 Day(s) | 3 | 10.2 | |
MYR 1.58 | 1 Piece(s) | Available | 5 Day(s) | 4 | 6.5 | |
MYR 1.70 | 1 Piece(s) | Available | 1 Day(s) | 4 | 10.5 | |
MYR 1.95 | 1 Piece(s) | Available | 1 Day(s) | 4 | 16.5 | |
MYR 1.70 | 1 Piece(s) | Available | 1 Day(s) | 5 | 8.6 | |
MYR 1.85 | 1 Piece(s) | Available | 1 Day(s) | 5 | 12.6 | |
MYR 2.09 | 1 Piece(s) | Available | 1 Day(s) | 5 | 20.6 | |
MYR 1.89 | 1 Piece(s) | Available | 1 Day(s) | 6 | 10.8 | |
MYR 1.89 | 1 Piece(s) | Available | 1 Day(s) | 6 | 16.8 | |
MYR 2.42 | 1 Piece(s) | Available | 5 Day(s) | 6 | 20.8 | |
MYR 2.32 | 1 Piece(s) | Available | 1 Day(s) | 6 | 25.8 | |
MYR 2.32 | 1 Piece(s) | Available | 1 Day(s) | 8 | 11.2 | |
MYR 2.74 | 1 Piece(s) | Available | 6 Day(s) | 8 | 21.2 |
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Basic Information
| Screw Type | Full Threaded | Tip Shape | Spherical | Material (Tip) | SUS440C |
|---|---|---|---|---|---|
| Material (Thread) | 40Cr Equivalent |
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: What are the types of locking screws?
- Answer: Depending on the tightening method, it is mainly divided into straight type and bolt type. Depending on the usage method, it can be divided into ball type, angle type and rotation stopper type.
- Question: Does the locking screw have hardness?
- Answer: The ball has hardness and it is more than 55 HRC. Products made of SCM435 material also have hardness at the thread part (38 to 43HRC), and those made of SUS304 material do not have hardness.
- Question: Which parts and components sold by MISUMI are generally used for locking screws?
- Answer: It is recommended to be used in conjunction with nuts, workpiece guide blocks, etc.
- Question: What is the strength class of the locking screw?
- Answer: This product is an adjusting bolt, not a tightening bolt, so there is no strength class.
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