JST Sales America Inc. 2-M4 Ring Terminal Connector

Part Overview

The JST Sales America Inc. 2-M4 is a non-insulated ring terminal connector designed for 14-16 AWG wire gauges with an #8 stud circular configuration. This component is classified as a free-hanging, in-line crimp terminal and is currently in active product status. Ring terminal connectors are essential in electrical assemblies where secure, permanent wire termination to a stud or bolt connection is required. Substitute parts may be necessary due to inventory availability, lead time considerations, or specific application requirements related to dimensional tolerances and seam construction methods.

Substiute Parts

2-M4

JST Sales America Inc.In Stock: 10572-M4 Datasheet

Current PartRFQ

12-8

3MIn Stock: 259012-8 Datasheet

SimilarRFQ

12-8-W

3MIn Stock: 182312-8-W Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the JST Sales America Inc. 2-M4 are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

• Terminal type: Circular
• Stud/tab size: #8
• Wire gauge compatibility: 14-16 AWG
• Termination method: Crimp
• Mounting configuration: Free Hanging (In-Line)
• Insulation type: Non-Insulated

The identified substitute parts are manufactured by 3M and include part numbers 12-8 and 12-8-W. Both substitutes maintain identical wire gauge, stud size, terminal type, and termination method specifications. Dimensional variations exist in thickness, width, and overall length; however, these variations remain within acceptable tolerances for the #8 stud circular ring terminal category. Seam construction differs between the main part (brazed seam) and the 12-8 variant (butted seam), while the 12-8-W variant features a brazed seam matching the main part. The 12-8-W variant additionally specifies copper contact material with tin finish.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and comply with RoHS regulations. The JST 2-M4 carries RoHS Compliant certification, while both 3M substitutes (12-8 and 12-8-W) carry ROHS3 Compliant certification. Selection between these parts should be based on dimensional fit requirements within the target assembly. The 2-M4 features a more compact profile with smaller outer width (0.260") and shorter overall length (0.567") compared to the 3M alternatives. The 12-8-W variant provides additional specification detail with copper contact material and tin finish, offering enhanced corrosion resistance characteristics. Seam construction method (brazed versus butted) may influence mechanical strength and reliability in high-vibration or high-stress applications, with brazed seams generally providing superior structural integrity.

Frequently Asked Questions (FAQ)

Q: Can the 3M 12-8 or 12-8-W be used as direct replacements for the JST 2-M4?

A: Both 3M parts are functionally equivalent for the specified wire gauge (14-16 AWG) and stud size (#8) applications. However, dimensional differences exist. The 3M parts are larger in width (0.330" versus 0.260") and length (0.700" versus 0.567"). Verify that the target assembly accommodates these dimensional variations before substitution.

Q: What is the difference between the 3M 12-8 and 12-8-W?

A: Both parts share identical dimensions and wire gauge specifications. The primary differences are seam construction (12-8 uses butted seam; 12-8-W uses brazed seam) and contact material specification (12-8-W specifies copper contact with tin finish). The 12-8-W variant provides more detailed material specifications.

Q: Are all three parts RoHS compliant?

A: Yes. The JST 2-M4 is RoHS Compliant. Both 3M parts (12-8 and 12-8-W) are ROHS3 Compliant. All three meet RoHS regulatory requirements.

Q: What wire gauges are compatible with these ring terminals?

A: All three parts are rated for 14-16 AWG wire gauges. Do not use these terminals with wire gauges outside this range.

Q: Does seam construction affect performance?

A: Seam construction method influences mechanical strength characteristics. Brazed seams (used in 2-M4 and 12-8-W) typically provide superior structural integrity compared to butted seams (used in 12-8). Application requirements for mechanical stress and vibration resistance should guide seam selection.