M4-12R/SK Equivalent & Substitute Parts

Part Overview

The M4-12R/SK is a ring terminal connector manufactured by 3M under the Scotchlok™ series. This circular terminal is designed for 4 AWG wire with a 1/2 stud connection, utilizing crimp termination for secure electrical connections. The part is currently active in production with 781 pieces in stock. Equivalent and substitute parts may be required due to supply chain considerations, inventory availability, or specific application requirements where alternative manufacturers' offerings meet the same electrical and mechanical specifications.

Substiute Parts

M4-12R/SK

3MIn Stock: 881M4-12R/SK Datasheet

Current PartRFQ

P4-12R-T

Panduit CorpIn Stock: 1060P4-12R-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M4-12R/SK is determined by the following critical parameters that must remain consistent:

• Terminal Type: Circular
• Wire Gauge: 4 AWG
• Stud/Tab Size: 1/2 Stud
• Termination Method: Crimp
• Mounting Type: Free Hanging (In-Line)
• Insulation Type: Non-Insulated

The P4-12R-T from Panduit Corp meets all these core electrical and mechanical requirements. Variations in dimensional parameters (thickness, width, length) and contact material specifications do not prevent functional substitution when the primary connection parameters align.

Parameter Comparison

Engineering Selection Recommendations

The M4-12R/SK is the primary selection as an active product with current manufacturing support and RoHS compliance. The P4-12R-T serves as a functional equivalent for applications requiring 4 AWG circular ring terminals with 1/2 stud connections. However, the P4-12R-T carries an obsolete product status, indicating discontinued manufacturing and limited future availability. Both parts maintain REACH Unaffected and EAR99 export classification status. Selection between these parts should prioritize the M4-12R/SK for new designs and long-term supply chain stability. The P4-12R-T may be considered only when existing inventory or legacy system compatibility requirements necessitate its use.

Frequently Asked Questions (FAQ)

Q: Can P4-12R-T replace M4-12R/SK in existing applications?

A: Yes, the P4-12R-T meets the core electrical and mechanical requirements: 4 AWG wire gauge, circular terminal type, 1/2 stud connection, and crimp termination. Dimensional variations exist but do not prevent functional substitution in standard applications.

Q: What are the key differences between these parts?

A: The primary differences are dimensional (thickness, width, length) and contact material specification. The M4-12R/SK does not specify contact material, while the P4-12R-T specifies copper with tin finish. The M4-12R/SK is active; the P4-12R-T is obsolete.

Q: Why is the P4-12R-T marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. This part should not be selected for new designs or applications requiring long-term supply assurance.

Q: Are both parts RoHS compliant?

A: Yes. The M4-12R/SK is RoHS Compliant, and the P4-12R-T is ROHS3 Compliant. Both meet regulatory requirements for restricted substance limitations.

Q: What packaging is available for these parts?

A: Both parts are supplied in bulk packaging. The M4-12R/SK has 781 pieces in stock; the P4-12R-T has 985 pieces in stock.

Q: Can these parts be used interchangeably in new designs?

A: The M4-12R/SK is recommended for new designs due to active product status. The P4-12R-T may be used only when legacy compatibility or existing inventory constraints require it.