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 Hydraulic Grease Fitting Kit, 110 Piece Assortment (SAE Sizes) | Includes Straight and Angled Zerk Fittings

Product ID: 467331264

Details

Material
Plastic
Size
Straight and
Pin type
Straight
Brand
Neiko
Colour
Silver

🔩110-piece comprehensive kit

🧰Durable metal with polished finish

⚙️Multiple SAE sizes & angles

€ 58.48

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Description

⚙️ Grease like a pro — never miss a spot!

PRECISION ANGLED FITTINGS - Includes 45° and 90° fittings for hard-to-reach lubrication points
VERSATILE SAE NPT SIZES - Covers 1/4-28 and 1/8" NPT fittings for maximum compatibility
PREMIUM POLISHED METAL BUILD - Durable, corrosion-resistant finish ensures long-lasting performance
COMPLETE 110 PIECE ASSORTMENT - All essential straight & angled Zerk fittings for every hydraulic grease need
ORGANIZED PORTABLE STORAGE CASE - Keep your fittings neatly sorted and ready for any job on the go

The Neiko 50463A Hydraulic Grease Fitting Kit offers a professional-grade 110-piece assortment of straight and angled Zerk fittings in SAE and NPT sizes. Crafted from polished metal for durability, this kit ensures precise lubrication access in any hydraulic or automotive application. Packaged in a sleek, organized storage case, it’s the ultimate toolset for maintenance pros who demand quality and convenience.

Specifications

ASIN	B0020MRLV2
Best Sellers Rank	#41,033 in Automotive ( See Top 100 in Automotive ) #100 in Automotive Fuel Transfer & Lubrication
Item model number	50463A
Manufacturer	Neiko
Product Dimensions	21.01 x 11.3 x 3 cm; 453.59 g

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€ 58.48

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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