Brass Zerk Grease Fittings — M6 to M16, Straight / 45° / 90°
Brass Zerk Grease Fittings — M6 to M16, Straight / 45° / 90°
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Brass Zerk Grease Fittings — M6 to M16, Straight / 45° / 90°Brass Zerk Grease Fittings — M6 to M16, Straight / 45° / 90°

Brass Zerk Grease Fittings — M6 to M16, Straight / 45° / 90°

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Price:
$1.55 USD
Stock:
In stock (500 units), ready to be shipped

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Description

 

Brass Zerk Grease Fittings — Keep Every Bearing and Joint Properly Lubricated

Mechanics, equipment operators, and serious DIYers know the frustration of a seized bearing or a worn joint caused by missed lubrication — often because the original grease fitting was stripped, corroded, or simply the wrong angle to reach. These brass Zerk grease fittings give you a reliable, thread-matched replacement or upgrade for virtually any metric lubrication port on agricultural equipment, automotive chassis, industrial machinery, and workshop tools.

Each set includes brass Zerk grease nipple fittings machined to metric thread standards, available in sizes M6×1mm through M16×1.5mm (approximately 0.24" to 0.63" thread diameter). Three head configurations are offered — straight, 45°, and 90° — so you can match the fitting to your access angle. Packages are sold in quantities of 1, 2, or 5 pieces depending on the size selected.

Typical use cases include replacing worn grease nipples on tractor and implement pivot points, installing metric Zerk fittings on trailer axle hubs and suspension joints, and retrofitting lubrication ports on conveyor bearings and industrial gearboxes where standard metric thread grease fittings are required.

🔗 Compatibility: Designed for metric-threaded grease ports (M6–M16). Fits standard Zerk-style grease gun couplers. Not compatible with imperial (UNF/UNC) threaded ports without an adapter — verify your thread standard before ordering.

✅ Key Features of These Brass Zerk Grease Fittings

  • 🔩Full Metric Size Range — Available in M6, M8, M10, M12, M14, and M16 thread diameters with pitch options (1.0mm and 1.25mm) to match your exact metric grease port specification.
  • 📐Three Head Angles — Straight, 45°, and 90° configurations let you select the right fitting for tight or recessed lubrication points where a straight nipple won't seat or align properly.
  • 🟡Solid Brass Construction — Brass offers natural corrosion resistance compared to standard carbon steel fittings, making these metric grease nipples suitable for moderately humid and outdoor equipment applications.
  • ⚙️Standard Zerk Ball-Check Design — The internal spring-loaded ball check valve accepts grease under pressure and seals automatically when the gun coupler is removed, preventing contamination from entering the lubrication point.
  • 📦Flexible Pack Quantities — Choose packs of 1, 2, or 5 pieces so you can stock exactly what you need for a single repair or keep spares on hand for fleet or equipment maintenance.
  • 🔄Direct Replacement Fit — Thread dimensions conform to standard metric fastener specifications, making these a straightforward replacement for OEM grease fittings on agricultural, automotive, and industrial equipment with metric lubrication ports.

📐 Technical Specifications — Brass Zerk Grease Nipple Fittings

Material Brass
Fitting Type Zerk (grease nipple / grease fitting)
Thread Standard Metric (M-series)
Available Thread Sizes M6×1mm, M8×1mm, M8×1.25mm, M10×1mm, M12×1mm, M14×1.5mm, M16×1.5mm
Thread Diameter Range M6–M16 (approx. 0.24"–0.63")
Head Configurations Straight, 45°, 90°
Package Quantities 1 pc, 2 pcs, or 5 pcs (see variant options)
Finish Natural brass
Grease Gun Coupler Compatibility Standard Zerk-style coupler (confirm jaw size)
Operating Pressure Rating See variant options / Contact us to confirm
Recommended Applications Agricultural equipment, automotive chassis, industrial machinery, conveyor bearings
Country of Origin See variant options
⚠️ Note: M8 is available in two pitches (1.0mm and 1.25mm). Confirm your port pitch with a thread gauge before ordering to ensure a proper fit.

❓ Frequently Asked Questions

How do I choose the right thread size for my grease fitting?

Match the fitting thread to your equipment's grease port thread. Sizes M6 through M16 are available. Use a thread gauge or consult your equipment manual to confirm both diameter and pitch — for example, M8 is offered in both 1.0mm and 1.25mm pitch. In inches, M6 is approximately 0.24", M8 ≈ 0.31", M10 ≈ 0.39", M12 ≈ 0.47", M14 ≈ 0.55", and M16 ≈ 0.63".

What angle should I choose — straight, 45°, or 90°?

Choose a straight fitting when your grease gun coupler has clear, direct access to the port. Use a 45° fitting when the port is partially obstructed or angled. A 90° fitting is typically the right choice when the port faces a surface or is recessed in a way that makes straight or 45° access impractical.

Are these fittings suitable for outdoor or high-moisture environments?

Brass is generally more corrosion-resistant than standard carbon steel, making these fittings a practical choice for moderately humid or outdoor equipment. For marine or highly corrosive environments, additional protective measures — such as anti-seize compound on the threads — are typically recommended.

What grease gun coupler is compatible with these Zerk fittings?

These are standard Zerk-style grease nipples and are generally compatible with any standard grease gun coupler designed for Zerk fittings. Confirm that the coupler jaw size matches the fitting head before use. Most standard hydraulic grease gun couplers will fit without modification.

How much grease pressure can these fittings handle?

Brass Zerk fittings typically handle the pressure range produced by standard hand-operated and pneumatic grease guns used in automotive and agricultural maintenance. For exact pressure ratings specific to your application, please contact us to confirm before use in high-pressure industrial systems.

Can I use these fittings on imperial (UNF/UNC) threaded ports?

No — these fittings use metric threads (M6–M16) and are not directly compatible with imperial UNF or UNC threaded ports. A thread adapter would be required. Always verify your equipment's thread standard (metric vs. imperial) before ordering.

Do I need thread sealant when installing these fittings?

In most cases, applying PTFE thread tape or a thread sealant compound is recommended to ensure a leak-free seal, particularly in pressurized lubrication systems. Follow your equipment manufacturer's installation guidelines for best results.

🛒 Select your size, angle, and pack quantity above, then add to cart — ships from our US warehouse.

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