DIN 986 Self-Locking Cap Nut, Zinc-Plated
FLOK supplies self-locking cap nuts DIN 986 in sizes M4 to M20, made of zinc-plated steel, stainless steel A2/A4 and brass.
The DIN 986 standard covers cap nuts without a through hole. They provide a closed connection of parts, protected from the ingress of contaminants.
The hemispherical cap shape gives good aesthetic qualities. The nuts are fitted with a nylon ring that prevents self-unscrewing and keeps the connection from loosening under dynamic loads or vibration.
Materials and manufacturing features
The main material is carbon steel of property classes 8 and 10. For corrosion protection, the products are zinc-plated: galvanic zinc plating gives the nuts a shine and protects them from moisture and chemically active environments. Cap nuts made of stainless steels A2 and A4 or of brass are also available — these alloys are not susceptible to corrosion and withstand prolonged environmental exposure.
Standard product sizes:
- Nominal thread diameter — from M4 to M20.
- Width across flats of the nut — from 7 to 30 mm.
- Product height — from 9.6 to 35 mm.
- Height of the hexagonal part of the cap nut — from 2.9 to 16.9 mm.
Application in manufacturing
The main purpose of the fastener is to create closed connections protected from the ingress of contaminants. It is used in mechanical engineering, automotive manufacturing, machine-tool building, instrument making and other industries. The nuts are also used for decorative finishing of closed connections. High strength and corrosion protection ensure long service life.
Where to buy DIN 986 nuts?
The FLOK catalogue features fasteners for various purposes, manufactured in accordance with standards. Browse the product range and place an order: delivery is carried out to any region of Russia and CIS countries. FLOK specialists will help you select analogues of fastener products.
Dimension table of hexagonal self-locking cap nuts DIN 986 in mm:
| d | h | m | r | s |
|---|---|---|---|---|
| M4 | 9.6 | 2.9 | 2.5 | 7 |
| M5 | 10.5 | 4.4 | 3 | 8 |
| M6 | 12 | 4.9 | 3.5 | 10 |
| M8 | 14 | 6.44 | 4.6 | 13 |
| M10 | 18.1 | 8.04 | 5.8 | 17 |
| M12 | 22.5 | 10.37 | 6.8 | 19 |
| M16 | 27.5 | 14.1 | 8.8 | 24 |
Designations:
d - nominal thread diameter
h - nut height
m - height of the hexagonal part of the nut, min.
r - cap radius
s - width across flats
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