RS PRO Black 4-Arm Clamping Knob, M8
- RS Stock No.:
- 7027724
- Brand:
- RS PRO
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 7027724 |
| Product description | RS PRO Black 4-Arm Clamping Knob, M8 |
| Manufacturer / Brand | RS PRO |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 7027724 |
| Product description | RS PRO Black 4-Arm Clamping Knob, M8 |
| Manufacturer / Brand | RS PRO |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Nov 25, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Country of Origin: CN
Product Details
RS PRO Thermoplastic Cross Knobs
Knobs are used in a wide variety of applications in our day-to-day lives and perform many functions, from being used as fixed handles to being used to tighten, loosen, adjust, clamp and push other components or pieces of equipment. They are used in various applications, from industrial and construction machinery to audio and visual equipment.
These cross-shaped handwheels from RS PRO are an ergonomic shape to ensure user comfort and ease of use. The knob handles are made from impact-resistant thermoplastic bodies and male knobs are fitted with a protruding screw insert (male) of either stainless steel or zinc-plated steel. Female knobs and threaded though knobs have threaded inserts of zinc-plated or stainless steel. Zinc-plated steel and stainless steel both provide wear resistance for the threads to ensure that the threads last throughout general use and are not easily damaged or sheared.
Female Knobs
Zinc-plated steel: M8 x 12 (RS 7027715), M8 x 15 (RS 7027718), M10 x 15 (RS 7027712), M12 x 15 (RS 7027721).
Stainless steel: M8 x 15 (RS 7027740), M10 x 15 (RS 7027759), M12 x 15 (RS 7027752).
Male Knobs
Zinc-plated steel: M6 x 25mm (RS 7027692), M8 x 20mm (RS 7027695), M8 x 30mm (RS 7027699), M8 x 25mm (RS 7027709), M10 x 25mm (RS 7027702), M12 x 30mm (RS 7027706).
Stainless steel: M6 x 25mm (RS 7027737), M8 x 20mm (RS 7027730), M8 x 30mm (RS 7027734), M8 x 25mm (RS 7027743), M10 x 25mm (RS 7027746).
Through-Thread Knobs
Zinc-plated steel: M8 x 12 (RS 7027724), M10 x 15 (RS 7027728).
Stainless steel: M8 x 12 (RS 7027756), M10 x 15 (RS 7027765).
Features & Benefits
- Thermoplastic handles
- Zinc plated steel or stainless steel
- Matte black finish
- Working temperature range of -20°C to +110°C
- Can short term withstand +170°C
- Resistant to most chemicals, UV light and water absorption (1.5% max)
Applications
These cross-shaped knobs are used in a variety of applications, with the shape providing an ergonomic grip for user comfort and added torque to be applied by hand. The stainless steel screw threads will better endure outdoor environments or hygiene-focussed environments, such as medical and food preparation industries. The zinc screws are as strong, but it is not recommended to use them outdoors/near moisture as they are more susceptible to rust and this will effect the performance of the screw.
Common applications include:
- Access doors
- Drawers & panels (domestic and industrial)
- Clamps and fixtures
- Industrial machinery
- Food preparation machinery
- Medical furniture
Specifications
| Attribute | Value |
| Brand | RS PRO |
| Thread | M8 |
| Thread Diameter | 8 mm |
| Hole Length | 24 mm |
| Thread Length | 12 mm |
| Knob Diameter | 40 mm |
| Insert Material | Steel |
| Mounting Type | Threaded Through Hole |
| Colour | Black |
| Knob Shape | 4-Arm |
