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 Battery Terminals Clamp Set for Marine Car Boat RV Vehicles (1 Pair)

Ampper Brass Battery Terminal Connectors, Top Post Battery Terminals Clamp Set for Marine Car Boat RV Vehicles (1 Pair)

Product ID: 283879956

Details

Colour
1 Set
Connector type
clamp
Contact material
Brass
Insulation material
Non-Insulated
Terminal
Ring Terminal

⚡Standard top post fit (19mm+/17mm-)

🔩Brass construction for durability

🛠️Tool-free, direct-fit installation

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Description

🔋 Power Up Your Ride with Ampper’s Brass Battery Terminals — Reliable, Ready, and Rust-Free!

VERSATILE CONNECTIVITY - Supports battery extension, parallel & ground connections
EFFORTLESS INSTALLATION - No modifications needed—get connected in minutes
UNIVERSAL COMPATIBILITY - Fits cars, boats, RVs with standard top post batteries
PRECISION MARKED POLARITY - Clear + and - labels eliminate installation errors
CORROSION RESISTANT BRASS BUILD - Engineered for marine-grade strength and longevity

Ampper Brass Battery Terminal Connectors offer a robust, corrosion-resistant solution for top post batteries in cars, boats, and RVs. Crafted from durable brass with clearly marked polarity, these clamps ensure a secure, direct-fit installation without any modifications. Ideal for battery extension, parallel, and ground connections, this pair delivers professional-grade performance trusted by thousands.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#99,364 in Automotive ( See Top 100 in Automotive ) #202 in Car Battery Terminals
Brand Name	Ampper
Color	1 Set
Connector Gender	Male
Connector Type	clamp
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (1,200)
Insulation Material Type	Non-Insulated
Item Weight	4 Ounces
Manufacturer	Ampper
Material Type	Brass
Model	Am-CBT0805
Number of Items	2
Part Number	Am-CBT0805
Terminal	Ring Terminal
Unit Count	1.0 Count

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