DIN 1587 A2 Stainless Steel Hex Dome Cap Nuts M4–M12

ID 1401865

$ 89.87

1-2 weeks delivery time

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DIN 1587 hexagonal dome cap nuts are manufactured from A2 stainless steel and feature a closed, rounded dome that covers the exposed end of a threaded fastener. Their hexagonal body allows tightening with a suitable wrench or socket, while the domed top provides a neat, finished appearance and covers the protruding bolt end. Available in six metric thread sizes — M4, M5, M6, M8, M10 and M12 — these corrosion-resistant cap nuts are suitable for indoor and outdoor fastening applications. All variants are specified according to DIN 1587 and supplied under individual FNI part numbers.

Description
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DIN 1587 A2 Stainless Steel Hex Dome Cap Nuts M4–M12

DIN 1587 hex dome cap nuts, also known as hexagonal domed blind nuts or acorn nuts, are designed for threaded fastening connections where a closed, rounded nut is required. The domed top covers the exposed end of a bolt or threaded stud, providing a finished appearance and helping reduce direct contact with exposed threads.

These cap nuts are manufactured from A2 stainless steel, offering corrosion resistance for general indoor and outdoor applications. Their hexagonal body allows installation and removal using a suitable wrench or socket.

The range includes six nominal metric thread sizes: M4, M5, M6, M8, M10 and M12. Each size corresponds to a separate FNI product reference.

Technical Specifications

Product Type	Hexagonal Dome Cap Nut / Blind Nut
Standard	DIN 1587
Material	A2 Stainless Steel
Nut Design	Closed Dome / Acorn Nut
Drive Type	External Hexagon
Thread Type	Metric
Available Sizes	M4, M5, M6, M8, M10, M12
Number of Variants	6
Applications	General indoor and outdoor threaded fastening

Features and Applications

Manufactured from corrosion-resistant A2 stainless steel.
DIN 1587 hexagonal dome cap nut design.
Closed domed top covers the exposed end of a threaded fastener.
Provides a neat, finished appearance for visible connections.
External hexagonal profile for tightening with a wrench or socket.
Suitable for bolts and threaded studs of the corresponding metric size.
Available in six nominal sizes from M4 to M12.

Available Sizes and Part Numbers

Thread Size	FNI Part No.
M4	Y15874
M5	Y15875
M6	Y15876
M8	Y15878
M10	Y158710
M12	Y158712

Size Selection

Select the cap nut according to the nominal thread size of the corresponding bolt or stud. Ensure that the bolt's protruding threaded length is compatible with the internal depth of the selected closed dome nut.