Excellent 4.7 out of 5.

M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel (pack of 5)

Accu Product Code (APC): HSHWM-M8-30-40-29-SS-PP

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M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel (pack of 5)

Accu Product Code (APC): HSHWM-M8-30-40-29-SS-PP

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1 Year Extended Warranty.
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M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel Description

The M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel has the following features:

Metric Metric or Imperial?
M8 (8mm) Thread Size
18mm Shoulder Diameter
40mm Overall Diameter (D)
17mm Head Height
Male Type
Stainless Steel Stud Material
29mm Knob Length (L)
Natural Stud Finish
Black Handwheel Finish
Polypropylene Handwheel Material
Polypropylene Handwheel Material Specification
Lobed Handwheel Shape
5 No. of Lobes
30mm Stud / Insert Length (E)

Discover more about the Threaded Clamping Knobs range.

Threaded clamping knobs are popular fastening components in engineering and manufacturing, designed to provide a secure grip for adjusting, tightening and holding machinery and equipment in place. Their threaded design allows for precise control and near-universal application.

Materials Used in Threaded Clamping Knobs

The choice of materials in manufacturing these fasteners significantly impacts their durability and suitability for specific environments. Common materials include:

Polyamide (Nylon): Known for its high strength and excellent wear resistance, making it suitable for demanding applications.
Polypropylene: A lightweight thermoplastic polymer resistant to chemicals, ideal for various industrial uses.
Stainless Steel: Offers superior strength and corrosion resistance, perfect for harsh environments and providing robust strength.

Thread Size Options

Accu’s Threaded clamping knobs are available in metric thread sizes to accommodate standard project requirements from M4 to M12.

Common Applications

Threaded Clamping knobs are part of Accus Finishing Hardware components and used across a huge number industries and applications:

Adjustable Workholding in CNC Machining: In precision machining workshops, threaded clamping knobs are used to secure workpieces on CNC milling and lathe machines. Operators frequently need to adjust positioning fixtures and hold-down clamps and these knobs provide a quick, tool-free solution for fastening components securely.
Medical Equipment: In hospitals and diagnostic centers, threaded clamping knobs are used to adjust the height and positioning of ultrasound machines. Medical technicians often need to reposition imaging equipment for different patients..

Automotive and Transportation: In long-haul trucking, driver comfort is crucial for reducing fatigue. Many commercial truck armrests and seat controls use threaded clamping knobs to allow for easy adjustment of armrest height and tilt angles.

FAQs

Q: What are clamping knobs used for?

A: Clamping knobs are used to provide a secure grip for adjusting, tightening and holding fixtures, equipment and machinery in place.

Q: What materials are clamping knobs made from?

A: Clamping knobs are commonly made from materials such as plastic, stainless steel, cast iron, steel and aluminum.

Q: What are the different types of clamping knobs?

A: Clamping knobs come in various designs, including threaded-stud knobs, threaded-hole knobs and more.

Q: How do I choose the right clamping knob for my application?

A: Consider factors such as the required thread size, material compatibility with the environment and the specific application's torque requirements when selecting a clamping knob.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

3.26kg

Component History

Product First Available:

Wednesday, August 21, 2019

Stock Last Updated:

10:53 PMWednesday, July 16, 2025

Specification Last Updated:

Wednesday, July 16, 2025

Barcodes

APC (Accu Product Code):

HSHWM-M8-30-40-29-SS-PP

EAN13 (International Article No.):

5063648671013

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Certificate of Conformity Included

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Thread Size

Stud / Insert Length (E)

Overall Diameter (D)

Type

Handwheel Material

Handwheel Finish

Handwheel Material Specification

Handwheel Shape

Head Height

Knob Length (L)

Metric or Imperial?

No. of Lobes

Shoulder Diameter

Stud Finish

Stud Material

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M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel (pack of 5)

M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel M8 x 30mm x 40mm Male Lobe Knobs - Black Polypropylene & Stainless Steel (pack of 5)

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