DIN 985 A2 Stainless Steel Self-Locking Hex Nuts M4–M16

ID 1402382

$ 16.52

1-2 weeks delivery time

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DIN 985 self-locking hex nuts are made from A2 stainless steel and designed to resist loosening in threaded fastening connections exposed to vibration and movement. Their hexagonal shape allows installation using a suitable wrench or socket, while the self-locking design provides additional resistance to unintentional rotation. The A2 stainless steel construction offers corrosion resistance for general mechanical, equipment and assembly applications. Available in eight metric thread sizes — M4, M5, M6, M8, M10, M12, M14 and M16.

Description
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DIN 985 A2 Stainless Steel Self-Locking Hex Nuts M4–M16

DIN 985 self-locking hex nuts are manufactured from A2 stainless steel and designed for threaded connections where resistance to loosening is required. Their self-locking construction helps maintain the fastening connection when exposed to vibration or movement.

These nuts feature a hexagonal external profile for tightening with a suitable wrench or socket. The internal metric thread is designed for use with compatible bolts, machine screws and threaded studs. Unlike standard hex nuts, DIN 985 self-locking nuts incorporate a prevailing-torque locking feature that creates additional resistance to rotation.

The A2 stainless steel body provides corrosion resistance for general indoor and outdoor applications where this material grade is suitable. These nuts can be used in mechanical equipment, fittings and general assembly applications requiring a locking fastener.

The range includes eight nominal metric thread sizes from M4 to M16. Each version is identified by an individual FNI part number.

Technical Specifications

Product Type	Self-Locking Hex Nut
Standard	DIN 985
Catalogue Designation	985 ATB A2
Body Material	A2 Stainless Steel
Nut Shape	Hexagonal
Locking Type	Self-Locking / Prevailing Torque
Thread Type	Internal Metric Thread
Available Thread Sizes	M4, M5, M6, M8, M10, M12, M14, M16
Number of Variants	8
Supplier	Forniture Nautiche Italiane (FNI)

Features and Applications

Manufactured with an A2 stainless steel body for corrosion resistance.
DIN 985 self-locking hexagonal nut design.
Self-locking feature helps resist loosening caused by vibration and movement.
Internal metric thread for compatible bolts, machine screws and studs.
Hexagonal profile for installation with a wrench or socket.
Suitable for general mechanical and equipment assembly applications.
Available in eight metric thread sizes from M4 to M16.

Available Thread Sizes and Part Numbers

Thread Size	FNI Part No.
M4	Y9854
M5	Y9855
M6	Y9856
M8	Y9858
M10	Y98510
M12	Y98512
M14	Y98514
M16	Y98516

Size Selection

Select the required metric thread size to match the corresponding bolt, machine screw or threaded stud. Ensure that the selected nut is appropriate for the operating conditions and that the locking mechanism is suitable for the intended application.