Comprehensive Technical Specification Directory: MIL-DTL-5015 / SAE-AS50151 & VG95234 Series
This official reference standard directory compiles all standardized military circular connector configurations, shell styles, contact retention specifications, and governing military standards across MIL-DTL-5015 (SAE-AS50151) Series I, II, and III, as well as NATO VG95234 reverse bayonet specifications. All classifications, designations, and descriptions are strictly derived from military specification documentation.
1. MIL-DTL-5015 / SAE-AS50151 Series I – Solder Contact Connectors
SERIES I CHARACTERISTICS & SPECIFICATION SCOPE Series I represents the baseline solder-contact circular connector series governed by SAE-AS50151 (formerly MIL-C-5015). Featuring threaded coupling rings and non-removable solder cup contacts, Series I connectors provide high dielectric strength, heavy-duty metallic shell ruggedness, and cost-effective power/signal distribution for military ground support, aerospace, and heavy industrial installations.
Military Standard
SAE Designation
Shell Style / Configuration
Technical & Functional Description
MS3100
SAE-AS31001
Receptacle, Wall Mounting
Wall mounting receptacle with rear threads for conduit or cable clamp attachment; carries electrical lines through bulkheads or structural walls.
MS3101
SAE-AS31011
Plug, Cable Connecting
Cable connecting plug (in-line receptacle) used for cable extension and harness joining where panel mounting is not required.
MS3102
SAE-AS31021
Receptacle, Box Mounting
Box mounting receptacle designed for direct installation on junction boxes or equipment enclosures; lacks rear accessory threads.
MS3103
SAE-AS31031
Receptacle, Potting Seal
Wall mounting receptacle equipped with an extended potting cup backshell for complete sealant wire encapsulation.
MS3106
SAE-AS31061
Plug, Straight
Straight cable plug assembly with threaded coupling nut for cable termination; accommodates solid (Class A) or split (Class B) backshells.
MS3107
SAE-AS31071
Plug, Quick Disconnect
Utility quick-disconnect plug utilizing a friction/latch release mechanism for rapid axial breakaway without thread rotation.
MS3108
SAE-AS31081
Plug, 90 Degrees
90-degree right-angle cable plug assembly for tight space installations requiring immediate 90° wire routing perpendicular to interface.
MS25183
SAE-AS25183
Plug, Potting Seal
Straight plug equipped with an integral potting cup backshell for environmental wire sealing via potting compound.
MS3507
SAE-AS35071
Plug, Quick Disconnect, Utility
Heavy-duty utility quick-disconnect plug designed for immediate breakaway operation under axial tension.
2. MIL-DTL-5015 / SAE-AS50151 Series II – Front Release Crimp Contact Connectors
SERIES II CHARACTERISTICS & SPECIFICATION SCOPE Series II connectors introduce front-release crimp contact retention system (MIL-C-39029 contacts inserted and extracted from the front mating face using MIL-I-81969 tools). Retaining standard threaded coupling and elastomeric wire sealing grommets, Series II enables field maintenance, rapid crimp contact termination, and component replacement without damaging wire harnesses.
Military Standard
SAE Designation
Shell Style / Configuration
Technical & Functional Description
MS3400
SAE-AS34001
Receptacle, Wall Mounting
Wall mounting receptacle featuring front-release crimp contacts and rear threads for conduit or environmental backshell attachment.
MS3402
SAE-AS34021
Receptacle, Box Mounting
Box mounting receptacle with front-release crimp contacts, designed for low-profile mounting on equipment enclosures without rear threads.
MS3404
SAE-AS34041
Receptacle, Jam Nut Mounting
Jam nut mounting receptacle featuring single-hole D-cut panel mounting with front-release crimp contacts and panel O-ring seal.
MS3406
SAE-AS34061
Plug, Straight
Straight cable plug assembly with front-release crimp contacts and threaded coupling nut.
MS3408
SAE-AS34081
Plug, 90 Degrees
90-degree right-angle plug assembly with front-release crimp contacts for compact directional wire routing.
MS3409
SAE-AS34091
Plug, 45 Degrees
45-degree angle plug assembly with front-release crimp contacts providing intermediate wire strain relief and directional cable exit.
MS3412
SAE-AS34121
Receptacle, Wall Mounting (Threads)
Wall mounting receptacle with front-release crimp contacts featuring integral rear accessory threads for strain relief backshells.
3. MIL-DTL-5015 / SAE-AS50151 Series III – Rear Release Crimp Contact Connectors
SERIES III CHARACTERISTICS & SPECIFICATION SCOPE Series III represents the advanced evolution of MIL-DTL-5015, featuring a rear-release contact retention mechanism (MIL-I-81969 tools insert and extract contacts from the wire side). Combined with high-temperature fluorosilicone grommets, threaded coupling, and optional self-locking firewall coupling nuts (SAE-AS34591), Series III provides superior contact retention, effortless servicing, and high-vibration firewall endurance up to 200°C.
Military Standard
SAE Designation
Shell Style / Configuration
Technical & Functional Description
MS3450
SAE-AS34501
Receptacle, Wall Mounting
Wall mounting receptacle with rear-release crimp contacts and rear accessory threads.
MS3454
SAE-AS34541
Receptacle, Jam Nut Mounting
Rear-release crimp contact receptacle featuring jam nut single-hole panel mounting and environmental panel O-ring seal.
MS3456
SAE-AS34561
Plug, Straight
Straight cable plug with rear-release crimp contacts and threaded coupling nut for environmental backshells.
SAE-AS34591
SAE-AS34591
Plug, Self-Locking Firewall
Heavy-duty straight plug featuring a self-locking coupling nut and steel firewall construction for severe high-vibration flight environments.
4. VG95234 Series – NATO Reverse Bayonet Coupling Connectors
VG95234 NATO SPECIFICATION CHARACTERISTICS & UNIQUE LOCKING MECHANISM VG95234 is the primary NATO / European military specification governing heavy-duty circular connectors based on MIL-DTL-5015 shell dimensions, contact configurations, and insert arrangements. Its defining distinction is the 3-point Reverse Bayonet Coupling mechanism, enabling full coupling and positive mechanical locking with a 1/4-turn (120° rotation). VG95234 connectors deliver audible and tactile lock verification, high vibration resistance, and rapid intermating without thread galling or safety-wiring.
VG Designation / Style
Shell Configuration & Interface
Mating Feature / Backshell Type
Technical & Functional Description
VG95234 Style A
Receptacle, Box Mounting
Flange Mount / Plain Holes
Box mounting receptacle for equipment enclosure mounting; plain clearance mounting flange holes without rear threads.
Box mounting receptacle featuring unthreaded clearance holes for standard bolt mounting.
VG95234 Style C1 / C2
Receptacle, Bulkhead Feed-Through
Bulkhead / Double Interface
Bulkhead feed-through receptacle enabling pin-to-socket interconnectivity across pressurized partitions.
VG95234 Style D
Plug, Straight
Straight / Flex Tube Adapter
Straight plug equipped with an endbell adapter designed for flexible protective conduit attachment.
VG95234 Style E / E1
Plug, 90 Degrees
Right Angle / Cable Clamp
90-degree angle plug equipped with cable clamp and compression gland (E) or flex tube adapter (E1).
VG95234 Style F
Receptacle, Cable Connecting
In-Line / Extension
In-line cable connecting receptacle equipped with cable clamp and compression bushing for cable extension.
VG95234 Style J1 / J2
Receptacle, Wall Mounting
Wall Flange / Rear Threads
Wall mounting receptacle featuring rear accessory threads and threaded (J1) or clearance (J2) flange holes.
VG95234 Style K
Plug, 90 Degrees, Shielded
Right Angle / RFI Grounding
90-degree right-angle plug featuring internal grounding spring for 360° EMI/RFI braid termination and flex conduit.
VG95234 Style L
Plug, Straight, Shielded
Straight / RFI Grounding
Straight plug featuring internal EMI/RFI grounding spring and adapter for flex conduit termination.
VG95234 Style M
Plug, Straight, Shielded
Straight / Braid & Boot
Straight plug featuring grounding spring, endbell adapter for shielding braid clamp, and heat-shrink boot adapter.
VG95234 Style T
Plug, Straight, Shielded
Straight / Heat Shrink Adapter
Straight plug featuring grounding spring and short adapter optimized for heat-shrinkable boot sealing.
VG95234 Style U1 / U2
Receptacle, Wall Mounting
Wall Flange / Heat Shrink
Wall mounting receptacle equipped with adapter for heat-shrink boots; threaded (U1) or clearance (U2) flange holes.
5. Associated Military Specifications, Tooling & Component Accessories
GOVERNING MILITARY SPECIFICATION FRAMEWORK Military circular connector assemblies rely on an interconnected framework of governing military standards covering electrical contact specifications, insertion/extraction tooling, crimp tools, backshell accessories, protective dust caps, and grommet sealing components.
Standard / Specification
Governing Body / Reference
Component Category
Technical Description & Scope
MIL-DTL-5015 / SAE-AS50151
DoD / SAE International
General Specification
Governing performance baseline for circular threaded electrical connectors (Classes A, B, C, D, E, F, R, H, K, L, W).
MIL-C-39029 / SAE-AS39029
DoD / SAE International
Electrical Contacts
General specification for crimp contacts (/29 pin, /30 socket for 5015 Series II/III; /44 pin, /45 socket).
MIL-C-85049 / SAE-AS85049
DoD / SAE International
Connector Accessories
General specification for backshells and cable clamps (/11 environmental backshells, /52 strain relief clamps).
MIL-I-81969 (/14, /15, /17, /19)
DoD / SAE International
Insertion/Extraction Tools
Standard plastic and metal insertion/removal tools for front- and rear-release crimp contacts.
MIL-DTL-22520
DoD
Crimping Tooling
Hand-held and pneumatic crimp tools, turrets, and dies for military contact wire termination.
MIL-STD-1651
DoD
Insert Arrangements
Standardized pin/socket layout arrangements and contact spacing diagrams for 5015/VG95234 shells.
FED-STD-H28
Federal Standard
Screw Threads
Federal standard governing Unified (UN/UNEF) screw threads for connector shells and backshell accessories.
MS90376
Military Standard
Protective Caps
Metal and plastic protective dust caps and covers for male and female connector shells.
MS3187 / MS27488
Military Standard
Sealing Plugs
Plastic grommet sealing plugs for filling unused contact cavities in environmental connector inserts.
MS3348 / SAE-AS33481
Military Standard
Crimping Bushings
Wire adapter bushings for crimping smaller wire sizes into larger contact wire barrels (sizes 8, 4, 0).