M4-516RK Equivalent & Substitute Parts

Part Overview

The M4-516RK is a ring terminal connector manufactured by 3M, designed for 4 AWG wire termination on a 5/16 stud. This non-insulated circular terminal features a brazed seam construction and is classified as an active product. The M4-516RK is part of the Scotchlok™ series and maintains RoHS compliance with unlimited moisture sensitivity rating (MSL 1). Finding equivalent substitute parts may be necessary due to inventory availability, lead time requirements, or procurement preferences while maintaining electrical and mechanical compatibility.

Substiute Parts

M4-516RK

3MIn Stock: 1064M4-516RK Datasheet

Current PartRFQ

P4-56R-T

Panduit CorpIn Stock: 1291P4-56R-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the M4-516RK are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Wire Gauge: Must be 4 AWG to ensure proper crimp contact area and current-carrying capacity
• Terminal Type: Must be Circular to maintain consistent geometry and mounting interface
• Stud/Tab Size: Must be 5/16 Stud for direct mechanical compatibility with the mating assembly
• Termination Method: Must be Crimp to ensure compatibility with standard crimping tools and procedures
• Insulation Type: Must be Non-Insulated to match the original specification
• Mounting Type: Must be Free Hanging (In-Line) to maintain installation compatibility

The substitute part P4-56R-T from Panduit Corp meets all critical compatibility parameters. Both parts are active products with current manufacturing status and maintain compliance with applicable regulations.

Parameter Comparison

Engineering Selection Recommendations

Both the M4-516RK and P4-56R-T are active products with current manufacturing support. Selection between these parts should be based on:

Regulatory Compliance: Both parts meet RoHS requirements and are REACH Unaffected. The P4-56R-T carries ROHS3 compliance, representing the most current RoHS standard iteration.

Product Availability: The P4-56R-T currently has higher inventory availability (1196 pcs) compared to the M4-516RK (957 pcs), which may influence procurement timelines.

Physical Dimensions: The P4-56R-T has a reduced thickness (0.050" vs 0.075") and increased overall length (1.460" vs 1.340"). These dimensional differences do not affect the critical stud interface or wire gauge compatibility but may impact space constraints in confined assemblies.

Series Designation: The M4-516RK belongs to the Scotchlok™ series, while the P4-56R-T belongs to the Pan-Term® series. Both series are established product lines with proven field performance.

Frequently Asked Questions (FAQ)

Q: Can P4-56R-T be used as a direct replacement for M4-516RK?

A: Yes. Both parts share identical wire gauge (4 AWG), stud size (5/16), terminal type (Circular), and termination method (Crimp). The dimensional variations in thickness and length do not affect the electrical interface or mechanical mounting compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are thickness (0.075" vs 0.050"), overall length (1.340" vs 1.460"), and manufacturer series designation (Scotchlok™ vs Pan-Term®). Both maintain identical outer edge width and stud interface dimensions.

Q: Are both parts RoHS compliant?

A: Yes. The M4-516RK is RoHS Compliant, and the P4-56R-T is ROHS3 Compliant. Both meet current regulatory requirements for restricted substances.

Q: Does the thickness difference affect performance?

A: The thickness difference reflects different manufacturing approaches between 3M and Panduit but does not affect the crimp contact area or current-carrying capacity for 4 AWG wire termination.

Q: Are these parts suitable for the same applications?

A: Yes. Both parts are non-insulated ring terminals with brazed seam construction, designed for identical wire gauge and stud size applications. They are functionally equivalent for standard electrical termination requirements.

Q: What is the significance of the length difference?

A: The length difference (0.120" or 3.04mm) may be relevant only in space-constrained assemblies. For standard applications, this variation does not impact functionality or compatibility.