MU10-8FLK Equivalent & Substitute Parts

Part Overview

The MU10-8FLK is an 8 stud spade terminal connector manufactured by 3M, designed for crimp termination of 10-12 AWG wire. This component is part of the Scotchlok™ series and features a non-insulated, tin-plated copper construction with a butted seam design. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing maintenance, repair, and new design applications where this connector type is specified.

Substiute Parts

MU10-8FLK

3MIn Stock: 983MU10-8FLK Datasheet

Current PartRFQ

8261

Keystone ElectronicsIn Stock: 8108261 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MU10-8FLK is determined by strict alignment of the following critical parameters:

• Stud/Tab Size: Must be 8 stud to ensure mechanical compatibility with mating connectors and equipment
• Wire Gauge Range: Must accommodate 10-12 AWG to maintain proper crimp contact and electrical performance
• Overall Dimensions: Width and length must match specified tolerances (0.320" width, 0.730" length) for physical fit in assemblies
• Contact Material and Finish: Copper ETP with tin plating ensures equivalent electrical conductivity and corrosion resistance
• Termination Method: Crimp termination is the only acceptable method for this connector class
• Insulation Status: Non-insulated configuration must be maintained for applications requiring direct stud access

The Keystone Electronics 8261 meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Keystone Electronics 8261 is a direct functional equivalent to the obsolete MU10-8FLK. Both components share identical critical dimensions, wire gauge compatibility, and contact specifications. The 8261 offers the additional advantage of active product status, ensuring continued availability and supply chain reliability.

The minor dimensional variance in ring center to termination length (0.287" versus 0.280") falls within acceptable mechanical tolerance ranges and does not affect functional compatibility in standard applications.

The 8261's ROHS3 compliance provides enhanced environmental and regulatory alignment for new designs and applications subject to modern compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the Keystone Electronics 8261 be used as a direct replacement for the MU10-8FLK in existing assemblies?

A: Yes. Both components share identical stud size, wire gauge range, overall dimensions, contact material, and termination method. The 8261 is mechanically and electrically compatible with applications originally specified for the MU10-8FLK.

Q: What is the significance of the slight difference in ring center to termination length?

A: The 8261 measures 0.287" compared to the MU10-8FLK's 0.280" in this dimension. This 0.007" variance is within standard mechanical tolerances for spade terminal connectors and does not impact functional performance or mating compatibility.

Q: Why is the MU10-8FLK classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by 3M. The Keystone Electronics 8261 provides continuity for applications requiring this connector specification.

Q: Does the 8261 meet modern compliance standards?

A: Yes. The 8261 is ROHS3 compliant and carries REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: Are there packaging differences between these parts?

A: The MU10-8FLK packaging is not specified in available data. The 8261 is supplied in bulk packaging, suitable for production and assembly operations.