Skip to the beginning of the images gallery

Hygienic high head mushroom knobs internal 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.

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 internal thread, and a tight USIT® seal that blocks out dirt and liquids. They are perfect for washdown-safe setups in food, medical, and pharmaceutical plants.

From £19.90 £16.58

SKU

WDS 82030

Select Your Sizes

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.

Scroll or use landscape mode on your device if you are unable to see all measurements.

Grouped product items
WDS No.	Weight	D	D1	D2	D3	D4	H	H1	H2	T	Stock Guaranteed
M4 Hygienic high head mushroom knob threaded USIT® black 82030-904K0 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 82030-904K0 Company Code	0.02	M4	20	10.8	9.7	4.1	19	8	1	10	< 10	£19.90 £16.58 Unit Price 1 + £19.90 £16.58 25 + £18.90 £15.75 Saving 5% 50 + £17.90 £14.92 Saving 10% 100 + £16.91 £14.09 Saving 15% 500 + £15.91 £13.26 Saving 20% Total:
M5 Hygienic high head mushroom knob threaded USIT® black 82030-905K0 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 82030-905K0 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	1	12	< 10	£20.34 £16.95 Unit Price 1 + £20.34 £16.95 25 + £19.32 £16.10 Saving 5% 50 + £18.31 £15.26 Saving 10% 100 + £17.29 £14.41 Saving 15% 500 + £16.27 £13.56 Saving 20% Total:
M6 Hygienic high head mushroom knob threaded USIT® black 82030-906K0 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 82030-906K0 Company Code	0.05	M6	25	14.2	13.1	6.1	25	12	1	12	< 10	£22.30 £18.58 Unit Price 1 + £22.30 £18.58 25 + £21.18 £17.65 Saving 5% 50 + £20.06 £16.72 Saving 10% 100 + £18.96 £15.80 Saving 15% 500 + £17.84 £14.87 Saving 20% Total:
M8 Hygienic high head mushroom knob threaded USIT® black 82030-908K0 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 82030-908K0 Company Code	0.13	M8	33	18	16.9	8.1	33	15	1	16	< 10	£33.85 £28.21 Unit Price 1 + £33.85 £28.21 25 + £32.16 £26.80 Saving 5% 50 + £30.47 £25.39 Saving 10% 100 + £28.78 £23.98 Saving 15% 500 + £27.07 £22.56 Saving 20% Total:
M10 Hygienic high head mushroom knob threaded USIT® black 82030-910K0 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 82030-910K0 Company Code	0.22	M10	40	22.3	21.2	10.1	40	19	1.5	20	< 10	£36.80 £30.67 Unit Price 1 + £36.80 £30.67 25 + £34.96 £29.13 Saving 5% 50 + £33.12 £27.60 Saving 10% 100 + £31.28 £26.07 Saving 15% 500 + £29.44 £24.53 Saving 20% Total:
M4 Hygienic high head mushroom knob threaded USIT® white 82030-904K1 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 82030-904K1 Company Code	0.02	M4	20	10.8	9.7	4.1	19	8	1	10	< 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:
M5 Hygienic high head mushroom knob threaded USIT® white 82030-905K1 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 82030-905K1 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	1	12	< 10	£21.32 £17.77 Unit Price 1 + £21.32 £17.77 25 + £20.26 £16.88 Saving 5% 50 + £19.19 £15.99 Saving 10% 100 + £18.13 £15.11 Saving 15% 500 + £17.06 £14.22 Saving 20% Total:
M6 Hygienic high head mushroom knob threaded USIT® white 82030-906K1 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 82030-906K1 Company Code	0.05	M6	25	14.2	13.1	6.1	25	12	1	12	< 10	£23.33 £19.44 Unit Price 1 + £23.33 £19.44 25 + £22.16 £18.47 Saving 5% 50 + £21.00 £17.50 Saving 10% 100 + £19.84 £16.53 Saving 15% 500 + £18.66 £15.55 Saving 20% Total:
M8 Hygienic high head mushroom knob threaded USIT® white 82030-908K1 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 82030-908K1 Company Code	0.13	M8	33	18	16.9	8.1	33	15	1	16	< 10	£35.18 £29.32 Unit Price 1 + £35.18 £29.32 25 + £33.42 £27.85 Saving 5% 50 + £31.66 £26.38 Saving 10% 100 + £29.90 £24.92 Saving 15% 500 + £28.14 £23.45 Saving 20% Total:
M10 Hygienic high head mushroom knob threaded USIT® white 82030-910K1 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 82030-910K1 Company Code	0.22	M10	40	22.3	21.2	10.1	40	19	1.5	20	< 10	£38.41 £32.01 Unit Price 1 + £38.41 £32.01 25 + £36.49 £30.41 Saving 5% 50 + £34.57 £28.81 Saving 10% 100 + £32.64 £27.20 Saving 15% 500 + £30.72 £25.60 Saving 20% Total:
M4 Hygienic high head mushroom knob threaded USIT® blue 82030-904K2 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 82030-904K2 Company Code	0.02	M4	20	10.8	9.7	4.1	19	8	1	10	< 10	£25.19 £20.99 Unit Price 1 + £25.19 £20.99 25 + £23.93 £19.94 Saving 5% 50 + £22.67 £18.89 Saving 10% 100 + £21.41 £17.84 Saving 15% 500 + £20.15 £16.79 Saving 20% Total:
M5 Hygienic high head mushroom knob threaded USIT® blue 82030-905K2 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 82030-905K2 Company Code	0.03	M5	21	11.8	10.7	5.1	21	10	1	12	< 10	£25.60 £21.33 Unit Price 1 + £25.60 £21.33 25 + £24.31 £20.26 Saving 5% 50 + £23.04 £19.20 Saving 10% 100 + £21.76 £18.13 Saving 15% 500 + £20.47 £17.06 Saving 20% Total:
M6 Hygienic high head mushroom knob threaded USIT® blue 82030-906K2 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 82030-906K2 Company Code	0.05	M6	25	14.2	13.1	6.1	25	12	1	12	< 10	£27.79 £23.16 Unit Price 1 + £27.79 £23.16 25 + £26.40 £22.00 Saving 5% 50 + £25.02 £20.85 Saving 10% 100 + £23.63 £19.69 Saving 15% 500 + £22.24 £18.53 Saving 20% Total:
M8 Hygienic high head mushroom knob threaded USIT® blue 82030-908K2 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 82030-908K2 Company Code	0.13	M8	33	18	16.9	8.1	33	15	1	16	< 10	£40.49 £33.74 Unit Price 1 + £40.49 £33.74 25 + £38.46 £32.05 Saving 5% 50 + £36.43 £30.36 Saving 10% 100 + £34.42 £28.68 Saving 15% 500 + £32.39 £26.99 Saving 20% Total:
M10 Hygienic high head mushroom knob threaded USIT® blue 82030-910K2 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 82030-910K2 Company Code	0.22	M10	40	22.3	21.2	10.1	40	19	1.5	20	< 10	£44.58 £37.15 Unit Price 1 + £44.58 £37.15 25 + £42.35 £35.29 Saving 5% 50 + £40.12 £33.43 Saving 10% 100 + £37.88 £31.57 Saving 15% 500 + £35.66 £29.72 Saving 20% Total:

Total

Cad content menu

Please Login to see select CAD

Product Info

SKU

WDS 82030

What are Hygienic High Head Mushroom Knobs Internal Thread with USIT® Seal & Shim Washer?

Hygienic High Head Mushroom Knobs with USIT® Seal & Shim Washers are complete, pre-configured sanitary fastening assemblies engineered for high-precision manual tightening, pulling, and positioning. Supplied as an all-in-one system, this female-threaded knob comes bundled with a dedicated Hygienic USIT® seal and matching stainless steel shim washer, allowing it to mount flawlessly onto existing threaded equipment studs.

The integrated under-head collar is engineered to seat perfectly against the USIT® elastomer ring. When tightened, the assembly creates an airtight, cavity-free seal that prevents product residue build-up, completely isolates the internal thread from fluid ingress, and meets strict contamination control regulations on washdown machinery.

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 panel, eliminating dead spaces, 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, preventing dirt, process fluids, and harsh chemical sanitizers from adhering.
Premium 316 Stainless Steel: Built from marine-grade 316 Stainless Steel (1.4404 / A4) to withstand aggressive high-pressure steam cleaning and chemical washdowns without pitting.
Debris-Resistant Geometry: Contoured head geometry features generous radii and smooth, gradual transitions, ensuring easy cleaning regardless of mounting orientation.

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 sorting guides, changeover components, and conveyor access points.
Pharmaceutical & Bio-Chemical Manufacturing: Automated bottling blocks, mixing vessel ports, and cleanroom enclosure panels.
Sanitary Machinery Fabrication: Removable safety shields, guard door locks, and high-frequency manual adjustment lines.

Alternative Industry Names

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

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

Technical Specifications

More Information
Unit Type	Metric
Material	Stainless Steel
Stock Guaranteed	No