BK4 and M85049 Backshell Series
- Technology
- Backshells and circular connector accessories
- Partner
- Amphenol
Supplementing our Amphenol connector assembly program is the kitting of backshells for use with MIL-DTL 38999 III / TV, 62GB and 608 series connectors.
Offered are heat shrink adaptors / spin couplers, band lock adaptors and strain reliefs in material and plating to match connector including black zinc nickel, electroless nickel, nickel aluminium bronze and olive drab cadmium / zinc cobalt. Adaptors have a wide range of cable entry sizes and can be kitted with appropriate Raychem heat shrink, memory spring or band to be supplied as one part number.
Cable exit orientations include 180°, 90° and 45° options with custom shell types including extended length or oversized cable diameter possible.

Range features
A high level overview of what this range offers
- BK4 proprietary backshell range offers an economical and reliable backshell solution for multiple connector types
- M85049 series offer approved backshells for MIL-DTL-38999 connector applications in various styles.
- Backshell kits including memory spring or band and heat-shrink boot are available for ease of ordering
- Standard plating finishes include black zinc nickel and electroless nickel
- Additional plating finishes include olive drab cadmium, olive drab zinc cobalt, nickel aluminium bronze and black anodised
- BK4 and M85049/88 have different cable entry diameter options to accommodate a range of cable types
- Further customisation of backshell adaptors is possible including extended length types to order
- Many further backshell options are available, contact us for your requirements
What’s in this range?
All the variants in the range and a comparison of what they offer
Backshell Series | Type | Range Suitability | Options | Orientations |
---|---|---|---|---|
BK4xRN | Heat Shrink Adaptor | 62GB (MIL-DTL-26482) 608 / Pattern 608 | Plating, Entry Size, Spring/Band, Heatshrink Boot | 90° 45° 180° |
BK4xRL | Heat Shrink Adaptor | MIL-DTL-38999 III | Plating, Entry Size, Spring/Band, Heatshrink Boot | 90° 45° 180° |
M85049/38 | Strain Relief | MIL-DTL-38999 III | Plating | 180° |
M85049/69 | Heat Shrink Adaptor | MIL-DTL-38999 III | Plating | 180° |
M85049/88 | Band Lock Adaptor | MIL-DTL-38999 III | Plating, Entry Size, Spring/Band, Heatshrink Boot | 90° 45° 180° |