are these fine or course thread

As the description states: "[INCLUDES]: Sizes - 30 straight 1/4-28, 20 straight 1/8" pipe grease, 15 45-degree, 1/4-28 and 15 90-degree 1/4-28 for angled grease guns and more. " The standard 1/4 inch thread is 1/4-20 so the 28 thread would be considered 'fine'. As far as the three selections of 1/8 inch pipe thread? That would be the standard NPT (National Pipe Thread) which really doesn't have a 'fine' designation but is a 27 pitch fitting by definition.

What is the difference between a regular grease fitting and a hydraulic grease fitting?

These are just typical grease zerks/fittings. The term Hydraulic must have been included to emphasize under pressure.

I order these because they were listed as stainless steel and they are zinc coated steel. I would like them replaced with the stainless steel ones?

If that the case i want a refund

all these nipples have no hole. Is that intentional?

No. The ones I bought were regular grease fittings with the standard little ball valve. If you got some with no hole it’s a major fluke.

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NEIKO 50463A Grease Fitting Assortment | 110 Piece | SAE | Straight and Angled Zerk Kit | A3 Steel | For Angled Grease Guns, Bearing Housings, Mechanical Component Lubrication

Product ID: 15421513

Details

Brand
NEIKO
Color
Silver
Material
Metal
Pin type
Straight
Size
SAE Grease 110

🔩A3 steel durable fittings

🧰Organized plastic storage case

⚙️110-piece comprehensive kit

¥5279

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Description

⚙️ Grease smarter, not harder — the ultimate zerk kit for pros who demand precision.

NEAT PORTABLE STORAGE - Includes a compartmentalized plastic case with an organization chart to keep your fittings perfectly sorted.
OPTIMIZED COMPATIBILITY - Fits a wide range of vehicles and mechanical components, solving OEM incompatibility issues effortlessly.
COMPLETE 110 PIECE ASSORTMENT - Covers all SAE grease fitting needs with straight, 45°, and 90° zerks for ultimate versatility.
EFFORTLESS HYDRAULIC GREASING - Enables efficient lubrication without disassembly, saving time and boosting maintenance productivity.
PREMIUM A 3 STEEL CONSTRUCTION - Engineered for long-lasting durability and resistance to wear under high-pressure lubrication.

The NEIKO 50463A Grease Fitting Assortment is a 110-piece SAE hydraulic zerk kit crafted from durable A3 steel. Designed for professional-grade lubrication, it includes straight, 45°, and 90° fittings compatible with various vehicles and mechanical parts. Housed in a smart plastic case with an organization chart, this kit streamlines maintenance by enabling efficient grease application without disassembly.

Specifications

ASIN	B0020MRLV2
Best Sellers Rank	#2,215 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #34 in Hydraulic Fittings
Date First Available	December 10, 2007
Item Weight	1 pounds
Item model number	50463A
Manufacturer	Ridgerock Tools Inc.
Product Dimensions	8.27 x 4.45 x 1.18 inches

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¥5279

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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