M6x1 90° Grease Nipple DIN 71412 for Industrial Lubrication Systems

What is an M6x1 90° Grease Nipple?

The M6x1 90° grease nipple, also known as a 90-degree grease fitting or 90° grease zerk, is a lubrication fitting designed to provide convenient grease access where straight grease nipples cannot be reached. Featuring a 90-degree angled body and a metric M6x1 thread, it allows efficient lubrication of bearings, bushings, pivot points and other moving components installed in confined spaces.

Manufactured in accordance with DIN 71412, the fitting is compatible with most standard manual, pneumatic and battery-powered grease guns. The integrated spring-loaded ball check valve helps prevent dirt, moisture and contaminants from entering the lubrication point while maintaining proper sealing during greasing. The 90° design improves accessibility in applications with limited clearance.

Key Features

The M6x1 90° grease nipple offers:

• 90-degree angled design
• Metric M6x1 thread
• Manufactured according to DIN 71412
• Durable steel construction
• Zinc-plated corrosion protection
• Spring-loaded ball check valve
• Easy access in confined installation spaces
• Compatible with standard grease gun couplers
• Quick installation and replacement
• Long service life in industrial environments

Technical Specifications

Typical Applications

The M6x1 90° grease fitting is widely used in:

• Bearing housings
• Rolling bearings
• Plain bearings
• Bushings
• Pivot joints
• Pins
• Shafts
• Industrial machinery
• Agricultural machinery
• Construction equipment
• Material handling systems
• Automotive applications
• Centralized lubrication systems
• Equipment with restricted access to lubrication points

Why Choose a 90° Grease Nipple?

A 90-degree grease nipple provides easier access when lubrication points cannot be reached using a straight fitting. It allows maintenance technicians to connect a grease gun quickly without dismantling surrounding components, reducing servicing time and improving maintenance efficiency.

What Does M6x1 Mean?

The designation M6x1 indicates a metric thread with:

• Nominal thread diameter: 6 mm
• Thread pitch: 1 mm

This is a common thread size used in industrial machinery, agricultural equipment, construction machines and automotive lubrication systems.

DIN 71412 Standard

The DIN 71412 standard specifies the dimensions and design requirements for grease nipples, ensuring compatibility with standard grease gun couplers used worldwide. The 90° version (Form C) is specifically intended for lubrication points requiring perpendicular access.

Frequently Asked Questions (FAQ)

What is a 90° grease nipple used for?

It is used where lubrication points are difficult to reach with a straight grease fitting, allowing grease to be applied from the side.

Is it compatible with standard grease guns?

Yes. It is compatible with most manual, pneumatic and battery-powered grease guns fitted with standard couplers.

What does M6x1 mean?

It refers to a metric thread with a 6 mm nominal diameter and a 1 mm thread pitch.

Why choose a 90° grease fitting instead of a straight one?

The angled design provides easier access in confined spaces and around machine components where direct access is limited.

Can a damaged grease nipple be replaced?

Yes. It is a threaded component that can be quickly removed and replaced during routine maintenance.

Frequently Asked Questions from Maintenance Engineers

When should a 90° grease nipple be installed?

Whenever a straight grease fitting cannot be accessed due to nearby machine components or restricted installation space.

Why won't grease pass through the fitting?

Possible causes include a blocked ball valve, hardened grease, contamination or a clogged lubrication passage.

Can different grease types be mixed?

Not always. Grease compatibility should be verified before changing lubricant types to maintain proper lubrication performance.

How should a grease nipple be inspected?

Check the thread, ball valve movement, sealing condition and confirm unrestricted grease flow during maintenance.

Why is regular replacement recommended?

Replacing damaged grease nipples helps prevent contamination, ensures reliable grease delivery and extends the service life of bearings and other lubricated components.