Do these have any lead in them and where are they made?

I think I purchased these battery terminal approx a year ago for use on my 31 hp Yanmar tractor and I did take a look at them approx a month ago and they still looked brand new. I do not know if they have any lead in them. They appear to be all brass with the exception of the clamp fasteners and the post and it's fastener. I am happy with the connectors I received and they seemed to be better quality than the similar connectors I've seen in "big box" stores

can the stud to contact the battery cable be removed and/or replaced?

Yes, the "stud" is just a normal hex bolt. In fact there is nothing holding the hex part of the bolt from dropping by gravity. But the hex part is inside a hex slot so no need to have 2 tools to tighten it. Note also the stud size is 10mm so be sure your cable lug size is big enough. The nut's size should be compatible with the 5/16" stud nut so no need for another size socket to tighten the cable.

Is the stud made of steel or is it stainless steel?

I don’t think they are stainless. Zinc plated mild steel probably. I’ve had these on my truck for over two years and they still look like new. Very happy and would buy again. Hope this helps.

Is the negative terminal opening smaller than the positive?

Yes, because the battery negative post is small than battery positive post.

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Ampper Brass Battery Terminal Connectors, Top Post Car Battery Cable Ends

Ampper Brass Battery Terminal Connectors, Top Post Car Battery Cable Ends

Product ID: 440017154

Details

Colour
1 Set
Connector Type
Clamp
Contact Material
Brass
Insulation Material
Non-Insulated
Terminal
Clamp Terminal

⚡Supports 12V standard top post batteries

🔩Brass construction for durability

🛠️Tool-free, direct-fit installation

S$22

Duties & taxes included

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Description

🔋 Power up with confidence—connect like a pro, wherever the road or waves take you!

VERSATILE CONNECTIVITY - Ideal for battery extension, parallel connections, and grounding to power your adventures without compromise.
EFFORTLESS INSTALLATION - Direct-fit design with flange nuts means no modifications or extra tools required—get connected faster.
UNIVERSAL COMPATIBILITY - Fits standard 19mm positive and 17mm negative top post batteries across cars, RVs, boats, and more.
PRECISION MARKED POLARITY - Clearly labeled + and - terminals to eliminate installation errors and save time.
CORROSION RESISTANT BRASS BUILD - Engineered for long-lasting strength and reliability in any environment.

Ampper Brass Battery Terminal Connectors offer a robust, corrosion-resistant solution for 12V top post batteries. Crafted from durable brass with clearly marked polarity, these connectors ensure quick, tool-free installation and universal compatibility with cars, RVs, and boats. Perfect for extending battery life, parallel setups, and grounding, they deliver reliable performance for professionals and enthusiasts alike.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#75,316 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #44 in Terminals (Car & Motorbike)
Brand Name	Ampper
Colour	1 Set
Connector Gender	Male
Connector Type	Clamp
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (1,229)
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	10.2L x 1.5W x 6.4H Centimeters
Item Highlight	Car Top Post Battery Clamps, Battery Terminals Connector, For Car Boat RV, Increased Strength and Reduced Corrosion, 1 Pair
Item Weight	4 Ounces
Manufacturer	Ampper
Material Type	Brass
Maximum Voltage	12 Volts
Model Number	Am-CBT0805
Number of Items	1
Number of Packs	1
Part Number	Am-CBT0805
Terminal Type	Clamp Terminal
Unit Count	1.0 Count

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