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Hygienic Cap Nuts with Collar USIT® 316 Stainless Steel black

Material

Kit - Cap Nut with Collar and Hygienic USIT® Seal and Shim Washer.

Cap Nut- Stainless Steel 1.4404, Polished.

Washer - Stainless Steel 1.4404, Polished.

Seal Ring - 75 EPDM 295 (black)

From £9.85 £8.21

SKU

WDS 7565

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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.	D	D1	D2	H	H1	T	Across Flats (A/F)	Weight	Finish	Stock Guaranteed	D3	Size of Thread
M4 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M4 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 7565-M4 Company Code	M4	11	9.7	9	1	4.8	7	0.01	Polished	< 10	4.1	M4	£9.85 £8.21 Unit Price 1 + £9.85 £8.21 25 + £9.36 £7.80 Saving 5% 50 + £8.87 £7.39 Saving 10% 100 + £7.88 £6.57 Saving 20% Total:
M5 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M5 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 7565-M5 Company Code	M5	12	10.7	11	1	6	8	0.01		< 10	5.1	M5	£10.44 £8.70 Unit Price 1 + £10.44 £8.70 25 + £9.91 £8.26 Saving 5% 50 + £9.40 £7.83 Saving 10% 100 + £8.35 £6.96 Saving 20% Total:
M6 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M6 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 7565-M6 Company Code	M6	14	13.1	13	1	7.2	10	0.01		< 10	6.1	M6	£11.06 £9.22 Unit Price 1 + £11.06 £9.22 25 + £10.51 £8.76 Saving 5% 50 + £9.96 £8.30 Saving 10% 100 + £8.84 £7.37 Saving 20% Total:
M8 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M8 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 7565-M8 Company Code	M8	18	16.9	16	1	9.6	13	0.02		< 10	8.1	M8	£15.00 £12.50 Unit Price 1 + £15.00 £12.50 25 + £14.26 £11.88 Saving 5% 50 + £13.50 £11.25 Saving 10% 100 + £12.00 £10.00 Saving 20% Total:
M10 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M10 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 7565-M10 Company Code	M10	22	21.2	20	1.5	12	16	0.03		< 10	10.1	M10	£17.78 £14.82 Unit Price 1 + £17.78 £14.82 25 + £16.90 £14.08 Saving 5% 50 + £16.01 £13.34 Saving 10% 100 + £14.23 £11.86 Saving 20% Total:
M12 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M12 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 7565-M12 Company Code	M12	27	25.5	23	1.5	14.4	18	0.04		< 10	12.1	M12	£26.53 £22.11 Unit Price 1 + £26.53 £22.11 25 + £25.20 £21.00 Saving 5% 50 + £23.88 £19.90 Saving 10% 100 + £21.23 £17.69 Saving 20% 250 + £21.22 £17.68 Saving 20% Total:
M16 Hygienic Cap Nut with Collar USIT® 316 Stainless Steel black 7565-M16 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 7565-M16 Company Code	M16	35	33.9	30	1.5	19.2	24	0.09		< 10	16.1	M16	£41.93 £34.94 Unit Price 1 + £41.93 £34.94 25 + £39.83 £33.19 Saving 5% 50 + £37.73 £31.44 Saving 10% 100 + £33.54 £27.95 Saving 20% Total:

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Product Info

SKU

WDS 7565

What are Cap Nut and Seal Washer Sets for Hygienic USIT® Applications?

Cap Nut and Seal Washer Sets for Hygienic USIT® Applications are complete, pre-configured sanitary fastening kits that combine a stainless steel collar cap nut with a matching Hygienic USIT® seal and shim washer. Supplied as an all-in-one assembly system, these kits are engineered to cover exposed threads while simultaneously sealing the fastening point.

To achieve a true cavity-free seal, the specialized collar cap nut must be paired with its corresponding sealing components. You can find the full selection of individual matching hardware options within the official WDS Stainless Nuts and Washers. When tightened together, the collar compresses the elastomer sealing ring flush against the mounting surface, eliminating open threads, gaps, and dead spaces where harmful bacteria, product residue, and aggressive cleaning fluids could otherwise collect.

Key Features

All-In-One Hygienic System: Bundles the correct matching collar cap nut and USIT® washer together, removing the risk of purchasing incompatible components.
EHEDG Certified Design: Meets strict European Hygienic Engineering & Design Group standards to guarantee optimal cleanability and contamination control in sterile environments.
Dead-Space Free Sealing: Completely seals the thread entry and caps the exposed stud, converting a standard fastening point into a smooth, hygienic surface.
Premium 316 Stainless Steel: The cap nut and washer are forged from marine-grade 316 Stainless Steel (1.4404) with a high-gloss polished finish to resist pitting from harsh sanitizers.

Advanced Seal Material Options:

Black 75 EPDM 295 / White 70 EPDM 253815: Highly durable synthetic rubbers for everyday sanitary sealing.
Blue 75 Fluoroprene® XP 45: A specialist elastomer engineered for extreme temperature and elevated chemical process resistance.

Industrial Applications

These certified sealing kits are purpose-built for exposed fastening positions on cleanrooms, process machinery, and washdown housings:

Food, Beverage & Dairy Processing: Exposed structural bolts on open-frame process gear, product sorting lines, and packaging machinery covers.
Pharmaceutical & Chemical Production: Cleanroom enclosure panels, sterile laboratory cabinets, and chemical mixing vessel frames.
Sanitary Machinery Fabrication: Capping dangerous exposed threads on stainless steel guards, removable machine covers, and washdown assemblies.

Alternative Industry Names

Hygienic Cap Nut Sets / Sanitary Dome Nut Sets
Acorn Nut Washer Sets / Cavity-Free Nut Kits
Stainless Steel Sealing Nut Sets / Hygienic USIT Nut Sets
Closed-End Hygienic Fastening Kits

Technical Specifications

More Information
Material	Stainless Steel
Unit Type	Metric
Stock Guaranteed	No