M39029 / SAE AS39029 Connector Contacts Sourcing Guide

M39029 connector contacts are specification-controlled electrical contacts used across military, aerospace, industrial and high-reliability connector systems. The designation remains widely used in part numbers, drawings and procurement searches, although the current governing general specification is SAE-AS39029.

This guide explains how M39029 and AS39029 terminology relates, how slash-sheet contact numbers are organized, what buyers should verify when sourcing contacts, and how to locate matching Electronic Expediters inventory.

M39029 Quick Reference

Current general specification	SAE-AS39029
Legacy specification	MIL-C-39029
Component family	Electrical connector contacts
Common contact types	Crimp removable, solderless-wrap and solder contacts
Primary sourcing key	Complete M39029/AS39029 part number
Expediters catalog area	Stock Products - Connectors
Official specification source	DLA ASSIST / Quick Search

What Is M39029?

M39029 is the familiar part-number family associated with electrical connector contacts originally controlled by MIL-C-39029. The older military general specification was canceled in 2005 and superseded by SAE-AS39029.

SAE-AS39029 is the current adopted general specification for electrical contacts used in connectors and other electrical and electronic components. It establishes general requirements for contact types including removable crimp contacts, solderless-wrap contacts and solder contacts.

Because existing drawings, procurement records, databases and installed equipment may continue to reference M39029 numbers, both M39029 and AS39029 terminology can appear during sourcing. Buyers should use the complete specification-based part number whenever possible.

View the DLA record for SAE-AS39029.

MIL-C-39029 vs. SAE-AS39029

MIL-C-39029 is a legacy military specification designation. DLA records identify MIL-C-39029 as canceled and superseded by SAE-AS39029.

This distinction matters when reviewing older drawings or bills of material. A legacy procurement document may call out an M39029 contact while current specification and qualification records are maintained under SAE-AS39029.

The part-number family itself remains highly recognizable in the supply chain, so an exact search such as M39029/58-360 can still be the most precise way to locate inventory.

View the DLA legacy MIL-C-39029 record.

Understanding M39029 Part Numbers

M39029 contact numbers normally include a specification-sheet designation followed by a contact configuration or identifying number. The slash-sheet portion identifies the applicable detailed contact specification, while the remaining characters distinguish the specific configuration defined by that sheet.

Examples represented in the Electronic Expediters catalog include:

• M39029/58-360
• M39029/56-351
• M39029/4-110
• M39029/56-352
• M39029/5-116

These examples represent only part of the M39029 inventory available through the Expediters catalog.

When sourcing a contact, the entire number matters. Contacts from different slash sheets can differ in contact gender, contact size, termination method, wire accommodation, connector family, material, finish and other controlled characteristics.

What Does the Slash Number Mean?

The slash number identifies the applicable AS39029 specification sheet. Different sheets cover different electrical-contact constructions and applications.

For example, SAE-AS39029/58 covers removable crimp pin contacts used with several established connector systems, including MIL-DTL-38999 Series I, II, III and IV, MIL-DTL-55302/69 and MIL-DTL-83733 applications.

View the DLA record for SAE-AS39029/58.

Search Electronic Expediters for M39029 Contacts

Electronic Expediters maintains hundreds of enabled M39029-related catalog listings across numerous slash-sheet and exact part-number families. The same underlying specification-based part number can appear in more than one inventory record when lots, manufacturers, date codes or acquisition sources differ.

If you know the required contact number, search using the complete number. Exact part-number searching reduces unrelated results and provides the fastest path to potentially matching inventory.

You can search current M39029 inventory or browse the broader electronic connector inventory.

M39029 Contact Sourcing Considerations

Connector contacts can appear physically similar while having materially different controlled requirements. Before substituting or purchasing an M39029 or AS39029 contact, procurement and engineering teams should normally verify:

• the complete M39029 or AS39029 part number;
• the applicable slash sheet;
• pin or socket configuration;
• contact size;
• wire size or conductor accommodation;
• termination method;
• applicable connector family;
• material and finish requirements;
• qualification requirements when specified;
• manufacturer, lot, date-code and documentation requirements.

For specification-controlled assemblies, the applicable specification sheet, drawing and procurement documentation should remain the controlling technical references.

AS39029 Qualification and QPD Verification

SAE-AS39029 includes qualification requirements. DLA records show that the former QPL-AS39029 was transformed into an electronic Qualified Products List within the Qualified Products Database, or QPD.

If a purchase order, drawing or engineering requirement specifically requires a qualified product, buyers should verify the manufacturer and applicable contact directly through the official qualification database rather than assuming qualification solely from a commercial listing.

View the DLA QPL-AS39029 / QPD record.

M39029 Contact Families in the Expediters Database

The Electronic Expediters database contains numerous M39029 specification-sheet families and exact contact numbers. Current catalog data includes substantial representation across several families, including /58, /56, /4 and /5 series contacts.

Some exact part numbers are represented by multiple inventory records. Separate records can preserve lot-specific, date-code, manufacturer-reference, availability or acquisition information while still representing the same underlying M39029 contact number.

M39029/58 Contacts

M39029/58 is one of the most heavily represented M39029 families in the current Expediters catalog. These are removable crimp pin contacts associated with several military connector families.

One frequently represented exact number is M39029/58-360. When searching for this or another /58 contact, use the complete number because the suffix identifies a specific configuration under the applicable specification sheet.

Frequently Asked Questions About M39029 Contacts

Is MIL-C-39029 still active?

No. DLA identifies MIL-C-39029 as canceled and superseded by SAE-AS39029. The M39029 designation remains common in part numbers and legacy procurement documentation.

Is SAE-AS39029 active?

Yes. DLA currently identifies SAE-AS39029 as an active adopted specification. Buyers working on specification-controlled procurement should still verify the current document and applicable slash sheet before purchase.

What types of contacts are covered by AS39029?

The general specification covers electrical connector contacts including removable crimp, solderless-wrap and solder contact types. Individual slash sheets define specific contact configurations and applications.

What is the difference between M39029/58 and M39029/56?

The slash numbers refer to different specification sheets. Each sheet defines its own contact construction, configuration and application requirements. Similar-looking contacts should not be assumed interchangeable solely because both belong to the M39029 family.

Does Electronic Expediters carry M39029 contacts?

Yes. The Expediters catalog contains hundreds of enabled M39029-related inventory listings spanning numerous exact contact numbers and specification-sheet families.

Why can the same M39029 number appear in multiple listings?

Electronic Expediters preserves inventory-specific records that can differ by lot, date code, manufacturer reference, acquisition source or other inventory information. Multiple records can therefore represent the same underlying specification-based part number.

How should I search for an M39029 contact?

Use the complete M39029 number whenever available. Searching an exact number such as M39029/58-360 is substantially more precise than searching only for M39029 or connector contact.

Need a Specific M39029 Contact?

Search the complete contact number in the Electronic Expediters search field. If the required contact is not immediately visible or a listing is shown as RFQ, contact Electronic Expediters with the full M39029/AS39029 number and any required manufacturer, qualification, lot, date-code or documentation requirements.