SHRINK BOOT ADAPTER SHELL SIZE 20

M85049/60 Shrink Boot Adapter Shell Size 20 — Olive Drab / Natural MIL-Spec Connector Backshell

The M85049/60-2G20N Shrink Boot Adapter Shell Size 20 in Olive Drab / Natural finish — SKU: M85049/60-2G20N is a MIL-DTL-85049/60-compliant aluminium shrink boot adapter backshell for use with MIL-DTL-38999, MS3100, and compatible circular connector series at shell size 20. This backshell accepts a Raychem or compatible heat shrink boot over its rear entry, providing strain relief, environmental sealing, and professional cable management at the rear of MIL-spec circular connectors in motorsport, aerospace, and professional automotive wiring applications across Norway, Sweden, and Denmark.

What Is a Shrink Boot Adapter Backshell?

A shrink boot adapter backshell threads onto the rear of a MIL-spec circular connector shell, replacing the standard strain relief clamp. It provides a smooth, tapered or cylindrical rear entry over which a compatible heat shrink boot (such as Raychem 202K or 222K series) is applied using a heat gun — shrinking to form a watertight, strain-relieved cable bundle seal at the connector exit. This is the professional standard for environmentally sealed MIL-spec connector assemblies in motorsport harnesses, offering superior moisture exclusion, vibration resistance, and a clean finished appearance compared to mechanical clamp-type backshells.

Shell Size 20 — Connector Family Compatibility

Shell size 20 is a large shell size in the MIL-DTL-38999 circular connector system — compatible with 104-contact MIL-spec circular connector applications. Always verify the shell size of your specific MIL-spec connector before ordering to ensure the backshell threads correctly onto the connector rear shell.

Olive Drab / Natural Finish

The standard olive drab or natural aluminium finish is the classic MIL-spec finish, providing corrosion resistance suitable for general motorsport and aerospace connector backshell applications.

Technical Specifications

• Specification: MIL-DTL-85049/60
• Shell size: 20
• Finish: Olive Drab / Natural
• Material: Aluminium alloy
• Compatible with MIL-DTL-38999 and MS3100 series circular connectors at shell size 20
• Accepts Raychem 202K, 202A, and compatible heat shrink boots at the rear entry