M4-14RK Equivalent & Substitute Parts

Part Overview

The M4-14RK is a ring terminal connector manufactured by 3M, designed for 4 AWG wire gauge applications with a 1/4 inch stud connection. This non-insulated circular terminal features a brazed seam construction and operates as a free-hanging in-line component. The part is actively produced and RoHS compliant, making it suitable for industrial and commercial electrical applications requiring reliable crimp termination.

Substitute parts become necessary when the primary manufacturer's inventory is unavailable, when alternative sourcing reduces lead times, or when equivalent components from qualified manufacturers meet the same electrical and mechanical specifications.

Substiute Parts

M4-14RK

3MIn Stock: 809M4-14RK Datasheet

Current PartRFQ

P4-14R-T

Panduit CorpIn Stock: 1071P4-14R-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M4-14RK is determined by strict equivalence across the following critical parameters:

• Wire gauge must be 4 AWG
• Terminal type must be circular
• Stud size must be 1/4 inch
• Termination method must be crimp
• Mounting configuration must be free hanging (in-line)
• Insulation status must be non-insulated
• Construction must include brazed seam

The P4-14R-T from Panduit Corp meets all these core requirements, establishing it as a qualified equivalent. Dimensional variations in thickness, width, and length do not preclude substitution when the functional parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

Both the M4-14RK and P4-14R-T are active production components with equivalent regulatory compliance. The M4-14RK carries RoHS Compliant status, while the P4-14R-T meets ROHS3 Compliant requirements. Both parts are REACH Unaffected and classified under the same ECCN and HTSUS codes, confirming their functional and regulatory equivalence.

Selection between these parts should be based on availability, lead time requirements, and supply chain considerations. The dimensional differences in thickness and width do not affect the electrical or mechanical function when applied to 4 AWG wire termination at a 1/4 inch stud connection point.

Frequently Asked Questions (FAQ)

Q: Can P4-14R-T replace M4-14RK in existing applications?

A: Yes. Both parts meet identical functional specifications for 4 AWG wire gauge, circular terminal type, 1/4 inch stud connection, and crimp termination. The dimensional variations do not affect compatibility in standard electrical assemblies.

Q: What are the key differences between these parts?

A: The primary differences are dimensional. The P4-14R-T has reduced thickness (0.050" vs 0.075"), reduced width (0.550" vs 0.680"), and slightly increased length (1.400" vs 1.340"). Both maintain brazed seam construction and non-insulated design.

Q: Are both parts RoHS compliant?

A: Yes. The M4-14RK is RoHS Compliant, and the P4-14R-T is ROHS3 Compliant. Both meet current environmental regulations.

Q: What wire gauge do these terminals accommodate?

A: Both terminals are designed exclusively for 4 AWG wire gauge. They are not suitable for other wire sizes.

Q: What is the stud size for these ring terminals?

A: Both terminals feature a 1/4 inch stud connection point, establishing compatibility with standard 1/4 inch fastening systems.

Q: Are these terminals insulated?

A: No. Both the M4-14RK and P4-14R-T are non-insulated terminals. They provide bare metal contact surfaces.

Q: What termination method is required?

A: Both terminals require crimp termination. They are not suitable for solder or other connection methods.