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: 228580791

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Details

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

⚡Corrosion-resistant clamps

🔋12V power compatibility

🛠️Brass construction for durability

Description

⚡ AmpperBrass: Power Up with Precision and Style!

DUAL PURPOSE POWER - Supports battery extension, parallel connections, and grounding for versatile electrical setups.
BUILT TO LAST BRASS - Premium brass material ensures maximum strength and longevity, resisting corrosion even in marine environments.
CLEARLY MARKED POLARITY - Positive and negative terminals are distinctly labeled, eliminating installation errors and boosting safety.
UNIVERSAL COMPATIBILITY - Perfectly engineered for standard top post batteries (19mm positive, 17mm negative) across cars, RVs, boats, and more.
PLUG PLAY INSTALLATION - Direct-fit design with flange nuts means no modifications—get your battery connected faster and hassle-free.

AmpperBrass Battery Terminal Connectors are a robust pair of top post clamps crafted from corrosion-resistant brass, designed for 12V standard batteries. Engineered for easy installation without modifications, they fit cars, boats, RVs, and more, delivering reliable electrical connections with clearly marked polarity for safe, efficient power management.

Specifications

Color	1 Set
Connector Type	Top Post Battery Terminal
Contact Material	Brass
Insulation Material	Non-Insulated
Terminal	Screw Terminal
Material	Brass
Brand	Ampper
Product Dimensions	4"L x 0.6"W x 2.5"H
Unit Count	1.0 Count
Manufacturer	Ampper
Model	Am-CBT0805
Item Weight	4 ounces
Item model number	Am-CBT0805
Is Discontinued By Manufacturer	No
Manufacturer Part Number	Am-CBT0805
Special Features	Used for car battery systems, compatible for Car, Vehicle, RV and Boat, for top post battery, increased strength and reduced corrosion, made of brass
Voltage	12 Volts

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127.60 DT

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

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

Details

Description

Specifications

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