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Hygienic high head mushroom knobs external thread USIT®

Material

Handle - Stainless Steel 1.4404, Polished.

Washer - Stainless Steel 1.4404.

Sealing Ring: 70 EPDM 291 Black, 70 EPDM 253815 White, Fluoroprene® XP 45 Blue.

These Stainless Steel mushroom knobs let you tighten machinery by hand while keeping things perfectly clean. They feature an extra-tall head for a solid grip, an external thread, and a tight USIT® seal that blocks out dirt and liquids.

From £19.80 £16.50

SKU

WDS 82030

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All prices shown include VAT All prices shown exclude VAT

Trade discounts & delivery options applied at checkout

STOCK GUARANTEED - Please check the table below for the specific item codes in this range that we guarantee.

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Grouped product items
WDS No.	Weight	D	D1	D2	D3	D4	H	H1	L	L1	T	Stock Guaranteed
M4 x 8 mm Hygienic high head mushroom knob threaded USIT® black 82030-90408K0 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90408K0 Company Code	0.04	M4	20	10.8	9.7	4.1	19	8	8	7	1	< 10	£19.80 £16.50 Unit Price 1 + £19.80 £16.50 25 + £18.80 £15.67 Saving 5% 50 + £17.82 £14.85 Saving 10% 100 + £16.82 £14.02 Saving 15% 500 + £15.84 £13.20 Saving 20% Total:
M5 x 10 mm Hygienic high head mushroom knob threaded USIT® black 82030-90510K0 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90510K0 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	10	9	1	< 10	£20.88 £17.40 Unit Price 1 + £20.88 £17.40 25 + £19.84 £16.53 Saving 5% 50 + £18.79 £15.66 Saving 10% 100 + £17.75 £14.79 Saving 15% 500 + £16.70 £13.92 Saving 20% Total:
M6 x 12 mm Hygienic high head mushroom knob threaded USIT® black 82030-90612K0 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90612K0 Company Code	0.06	M6	25	14.2	13.1	6.1	25	12	12	11	1	< 10	£22.86 £19.05 Unit Price 1 + £22.86 £19.05 25 + £21.71 £18.09 Saving 5% 50 + £20.57 £17.14 Saving 10% 100 + £19.43 £16.19 Saving 15% 500 + £18.29 £15.24 Saving 20% Total:
M8 x 16 mm Hygienic high head mushroom knob threaded USIT® black 82030-90816K0 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90816K0 Company Code	0.14	M8	33	18	16.9	8.1	33	15	16	15	1	< 10	£35.89 £29.91 Unit Price 1 + £35.89 £29.91 25 + £34.09 £28.41 Saving 5% 50 + £32.30 £26.92 Saving 10% 100 + £30.50 £25.42 Saving 15% 500 + £28.72 £23.93 Saving 20% Total:
M10 x 20 mm Hygienic high head mushroom knob threaded USIT® black 82030-91020K0 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-91020K0 Company Code	0.23	M10	40	22.3	21.2	10.1	40	19	20	19	1.5	< 10	£38.98 £32.48 Unit Price 1 + £38.98 £32.48 25 + £37.03 £30.86 Saving 5% 50 + £35.08 £29.23 Saving 10% 100 + £33.13 £27.61 Saving 15% 500 + £31.19 £25.99 Saving 20% Total:
M4 x 8 mm Hygienic high head mushroom knob threaded USIT® white 82030-90408K1 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90408K1 Company Code	0.03	M4	20	10.8	9.7	4.1	19	8	8	7	1	< 10	£20.78 £17.32 Unit Price 1 + £20.78 £17.32 25 + £19.74 £16.45 Saving 5% 50 + £18.71 £15.59 Saving 10% 100 + £17.66 £14.72 Saving 15% 500 + £16.63 £13.86 Saving 20% Total:
M5 x 10 mm Hygienic high head mushroom knob threaded USIT® white 82030-90510K1 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90510K1 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	10	9	1	< 10	£21.86 £18.22 Unit Price 1 + £21.86 £18.22 25 + £20.76 £17.30 Saving 5% 50 + £19.67 £16.39 Saving 10% 100 + £18.58 £15.48 Saving 15% 500 + £17.48 £14.57 Saving 20% Total:
M6 x 12 mm Hygienic high head mushroom knob threaded USIT® white 82030-90612K1 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90612K1 Company Code	0.06	M6	25	14.2	13.1	6.1	25	12	12	11	1	< 10	£23.89 £19.91 Unit Price 1 + £23.89 £19.91 25 + £22.69 £18.91 Saving 5% 50 + £21.50 £17.92 Saving 10% 100 + £20.30 £16.92 Saving 15% 500 + £19.12 £15.93 Saving 20% Total:
M8 x 16 mm Hygienic high head mushroom knob threaded USIT® white 82030-90816K1 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90816K1 Company Code	0.14	M8	33	18	16.9	8.1	33	15	16	15	1	< 10	£37.22 £31.02 Unit Price 1 + £37.22 £31.02 25 + £35.36 £29.47 Saving 5% 50 + £33.49 £27.91 Saving 10% 100 + £31.63 £26.36 Saving 15% 500 + £29.77 £24.81 Saving 20% Total:
M10 x 20 mm Hygienic high head mushroom knob threaded USIT® white 82030-91020K1 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-91020K1 Company Code	0.23	M10	40	22.3	21.2	10.1	40	19	20	19	1.5	< 10	£40.58 £33.82 Unit Price 1 + £40.58 £33.82 25 + £38.56 £32.13 Saving 5% 50 + £36.53 £30.44 Saving 10% 100 + £34.50 £28.75 Saving 15% 500 + £32.47 £27.06 Saving 20% Total:
M4 x 8 mm Hygienic high head mushroom knob threaded USIT® blue 82030-90408K2 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90408K2 Company Code	0.04	M4	20	10.8	9.7	4.1	19	8	8	7	1	< 10	£25.09 £20.91 Unit Price 1 + £25.09 £20.91 25 + £23.83 £19.86 Saving 5% 50 + £22.58 £18.82 Saving 10% 100 + £21.32 £17.77 Saving 15% 500 + £20.08 £16.73 Saving 20% Total:
M5 x 10 mm Hygienic high head mushroom knob threaded USIT® blue 82030-90510K2 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90510K2 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	10	9	1	< 10	£26.14 £21.78 Unit Price 1 + £26.14 £21.78 25 + £24.83 £20.69 Saving 5% 50 + £23.52 £19.60 Saving 10% 100 + £22.21 £18.51 Saving 15% 500 + £20.90 £17.42 Saving 20% Total:
M6 x 12 mm Hygienic high head mushroom knob threaded USIT® blue 82030-90612K2 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90612K2 Company Code	0.06	M6	25	14.2	13.1	6.1	25	12	12	11	1	< 10	£28.36 £23.63 Unit Price 1 + £28.36 £23.63 25 + £26.94 £22.45 Saving 5% 50 + £25.51 £21.26 Saving 10% 100 + £24.10 £20.08 Saving 15% 500 + £22.68 £18.90 Saving 20% Total:
M8 x 16 mm Hygienic high head mushroom knob threaded USIT® blue 82030-90816K2 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-90816K2 Company Code	0.14	M8	33	18	16.9	8.1	33	15	16	15	1	< 10	£42.53 £35.44 Unit Price 1 + £42.53 £35.44 25 + £40.39 £33.66 Saving 5% 50 + £38.27 £31.89 Saving 10% 100 + £36.14 £30.12 Saving 15% 500 + £34.02 £28.35 Saving 20% Total:
M10 x 20 mm Hygienic high head mushroom knob threaded USIT® blue 82030-91020K2 Edit the product code below. You need to be associated to a registered company in order to edit this product code, please speak to your company administrator or register Create New Company Account. WDS code 82030-91020K2 Company Code	0.23	M10	40	22.3	21.2	10.1	40	19	20	19	1.5	< 10	£46.75 £38.96 Unit Price 1 + £46.75 £38.96 25 + £44.41 £37.01 Saving 5% 50 + £42.08 £35.07 Saving 10% 100 + £39.74 £33.12 Saving 15% 500 + £37.40 £31.17 Saving 20% Total:

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Product Info

SKU

WDS 82030

What are mushroom knobs with external thread and Hygienic USIT washers?

Hygienic High Head Mushroom Knobs with External Thread and USIT® Washers are complete, pre-configured sanitary fastening assemblies engineered for heavy-duty manual tightening, pulling, pushing, and positioning. Supplied as an all-in-one system, this male-threaded knob comes bundled with a dedicated Hygienic USIT® seal and matching stainless steel shim washer, allowing it to screw directly into tapped holes, threaded inserts, or mating components.

The integrated under-head collar and shaft geometry are engineered to seat perfectly against the USIT® elastomer ring. When tightened, the assembly creates an airtight, cavity-free seal that eliminates product residue build-up, completely isolates the thread entry point from fluid ingress, and helps processing equipment comply with strict sanitary design principles.

Key Features

All-In-One Hygienic System: Supplied complete with a genuine Hygienic USIT® Seal & Shim Washer for immediate, liquid-tight installation.
Dead-Space Free Sealing: The specialised collar compresses the elastomer seal ring flush against the mounting surface, eliminating gaps, micro-crevices, and bacterial growth zones.
Ultra-Smooth Surface Profile: High-gloss polished finish with a surface roughness average significantly below Ra 0.8 µm, making it incredibly difficult for process debris or cleaning fluids to adhere.
Ergonomic High Head Profile: The prominent mushroom head offers a large hand-contact area, providing a secure grip for repeated push, pull, and manual clamping movements without tools.
Premium Marine-Grade Metals: Forged from robust 316 Stainless Steel (1.4404 / A4) to withstand aggressive high-pressure steam cleaning and harsh chemical washdowns without pitting.
Debris-Resistant Geometry: Contoured head geometry features generous radii and smooth, gradual transitions to reduce dirt traps, regardless of the mounting position.

Target Industrial Applications

This unified assembly is purpose-built for cleanrooms, sterile laboratories, and processing equipment subject to strict sanitary inspection:

Food, Beverage & Dairy Processing: Material sliding guides, changeover components, and conveyor access points.

Pharmaceutical & Medical Device Manufacturing: Automated packaging machinery, process equipment lines, and cleanroom inspection panels.

Sanitary Machinery Fabrication: Removable safety covers, machine guards, sliding parts, and tool-free manual clamping points.

Alternative Industry Names

Depending on your industry sector or application layout, this combined assembly may be referenced as:

Hygienic Male Thread Knobs with Seals
Sanitary High Head Hand Knobs
Washdown Operating Knobs with Washers
High Head Stainless Steel Thumb Knobs
Push-Pull Knobs with USIT® Seals

Technical Specifications

More Information
Unit Type	Metric
Material	Stainless Steel
Stock Guaranteed	No