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 Connector Battery Cable Ends for Marine Car Boat RV Vehicles (1 Pair)

Product ID: 228580791

Details

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

⚡Supports 12V standard top post batteries

🔩Brass construction for ultimate durability

⏱️Tool-free, direct-fit installation

S$21

Duties & taxes included

In stock

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Description

🔋 Power Up Your Ride with Ampper’s Brass Battery Terminals – Connect Like a Pro!

VERSATILE CONNECTIVITY - Perfect for battery extension, parallel wiring, and grounding to keep your power system optimized.
CLEARLY MARKED POLARITY - Positive (+) and Negative (-) terminals are laser-etched for foolproof, fast connections every time.
EFFORTLESS INSTALLATION - No modifications needed—flange nuts and direct-fit design get you connected in minutes, not hours.
UNIVERSAL COMPATIBILITY - Fits standard 19mm positive and 17mm negative top post batteries across cars, boats, RVs, and more.
CORROSION RESISTANT BRASS BUILD - Engineered for long-lasting strength and reliability in marine and automotive environments.

Ampper Brass Battery Terminal Connectors offer a robust, corrosion-resistant solution for 12V top post batteries. Crafted from premium brass with clearly marked polarity, these connectors ensure quick, hassle-free installation without modifications. Compatible with cars, boats, RVs, and marine vehicles, they provide reliable performance for battery extension, parallel connections, and grounding, making them a must-have upgrade for any power system enthusiast.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#29,241 in Automotive ( See Top 100 in Automotive ) #86 in Automotive Replacement Battery Terminals & Ends
Brand Name	Ampper
Color	1 Set
Connector Gender	Male
Connector Type	Top Post Battery Terminal
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (1,267)
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	4"L x 0.6"W x 2.5"H
Item Weight	4 ounces
Manufacturer	Ampper
Material Type	Brass
Maximum Voltage	12 volts
Model	Am-CBT0805
Number of Items	1
Number of Packs	1
Part Number	Am-CBT0805
Terminal	Post Terminal
Unit Count	1 Count

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