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 Connector, Top Post Battery Terminal Clamp Set for Marine Boat RV Vehicle (1 Pair)

Ampper Brass Battery Terminal Connector, Top Post Battery Terminal Clamp Set for Marine Boat RV Vehicle (1 Pair)

Product ID: 761340785

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Details

Color
1 set
Connector Type
Top Post
Contact Material
Brass
Insulation Material
Non-Insulated
Terminal
Screw Terminal

⚡Supports 12V battery systems

🔩Heavy-duty brass build

🛥️Universal fit for cars, RVs & boats

Description

🔋 Power Up Your Ride with Ampper’s Brass Battery Connectors — Strength Meets Simplicity!

COMPACT LIGHTWEIGHT - Slim profile and just 113g for easy handling without bulk or added weight.
VERSATILE APPLICATION - Perfect for battery extension, parallel connections, and grounding across multiple vehicle types.
PRECISION MARKED TERMINALS - Clearly labeled + and - terminals for foolproof, fast installation every time.
PLUG AND PLAY COMPATIBILITY - Direct-fit design requires no modifications—get your battery connected in minutes.
CORROSION RESISTANT BRASS CONSTRUCTION - Engineered for durability and long-lasting performance in marine and automotive environments.

Ampper’s Brass Battery Terminal Connector Set offers a robust, corrosion-resistant solution for 12V top post batteries. Designed for seamless installation on cars, RVs, and boats, this pair of precision-marked terminals ensures reliable electrical connections with enhanced strength and durability. Ideal for battery extensions, parallel setups, and grounding, it’s the smart upgrade every professional needs to keep their vehicle powered and ready.

Specifications

Manufacturer	Ampper
Brand	Ampper
Model	Am-CBT0805
Product Dimensions	10.16 x 1.52 x 6.35 cm; 113.4 g
Item model number	Am-CBT0805
Is Discontinued By Manufacturer	No
Special Features	Brass construction, Fits cars, vehicles, RVs, and boats, For top post batteries, Increases strength and reduces corrosion, Used for car battery systems
Item Dimensions L x W x H	10.2 x 1.5 x 6.4 cm
Voltage	12 Volts
Color	1 set
Item Weight	113 g

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