D-Sub, D-Shaped Connectors - Accessories - Jackscrews

Image Part Number Description / PDF Quantity Rfq
D121073-39

D121073-39

VEAM

DSUB SCREW LOCKS W/THRD INS

1288

250-9520-000

250-9520-000

VEAM

MDM JACKS LP

2054

320-7727-000

320-7727-000

VEAM

MDM-100 JACKSCREW KIT

0

320-9505-014

320-9505-014

VEAM

JACKSCREW # 2-56

35

D53018-5

D53018-5

VEAM

DSUB SLIDE LOCK POST BRASS

0

357-9509-000

357-9509-000

VEAM

MDM JACKS RETAINER

4742

D20420-99

D20420-99

VEAM

DSUB MALE SCREW LOCK ZINC X2

578

D20420-108

D20420-108

VEAM

DSUB MALE SCREW LOCK

95

D20419-119

D20419-119

VEAM

DSUB MALE SCREW LOCK ZINC X2

2636

D20420-099

D20420-099

VEAM

DSUB MALE SCREW LOCK ZINC X2

578

D20419-216

D20419-216

VEAM

DSUB MALE SCREW LOCK ZINC X2

0

M83513/05-12

M83513/05-12

VEAM

CONN JACKSCREW LP ALLEN 4-40

181

146745-1 REV A

146745-1 REV A

VEAM

DSUB JACKSCREW ASSEMBLY

0

371-0062-040

371-0062-040

VEAM

D-SUB FEMALE SCREW LOCK CAD

0

D20418-82

D20418-82

VEAM

DSUB FEMALE SCREW LOCK CAD X2

11290

D53018-1

D53018-1

VEAM

DSUB SLIDE LOCK KIT 5PCS

0

M83513/05-02

M83513/05-02

VEAM

CONN JACKSCREW LP ALLEN 2-56

451

D20418-136

D20418-136

VEAM

DSUB FEMALE SCREW LOCK ZINC

0

D20419-74

D20419-74

VEAM

DSUB SCWLK MALE (NM BRASS)

462

317-9611-000

317-9611-000

VEAM

MDM JACKS SLOT HEAD LP

3734

D-Sub, D-Shaped Connectors - Accessories - Jackscrews

1. Overview

D-Sub (D-Subminiature) connectors are D-shaped metallic shell electrical connectors widely used in computing, industrial equipment, and communication systems. They feature polarized designs to prevent misalignment and provide stable signal transmission. Jackscrews are threaded fastening components used to secure D-Sub connectors to mating interfaces, ensuring mechanical stability and electrical continuity. These components remain critical in legacy systems and specialized applications despite the rise of modern alternatives like USB and HDMI.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Standard D-Sub9-104 contacts, 5:2 shell ratio, screw lockingRS-232 serial ports, industrial controls
High-Density D-SubDouble-row contacts, 37-104 pinsHigh-speed data acquisition systems
Micro D-SubMiniaturized design (13-52 contacts)Aerospace sensors, medical imaging
Threaded Jackscrews6-48 UNC threads, captive or free-floatingSecure panel mounting in vibration environments
Quick-Lock JackscrewsNon-threaded latching mechanismsRapid maintenance scenarios in broadcast equipment

3. Structure & Composition

D-Sub connectors consist of a conductive metal shell (aluminum or steel), multiple signal contacts (phosphor bronze with gold plating), and dielectric insulators (thermoplastic or ceramic). Jackscrews integrate threaded shafts (stainless steel or brass), washer systems, and mounting flanges. Connector shells often feature EMI shielding coatings, while jackscrews may include knurled grips for manual tightening.

4. Key Technical Specifications

ParameterImportance
Contact Current Rating (1-13A)Determines power handling capability
Voltage Withstand (100-1000V)Ensures insulation reliability
Contact Resistance (<10m )Impacts signal integrity
Temperature Range (-55 C to +125 C)Defines operational environment limits
Jackscrew Torque (3-15 in-lb)Prevents over-tightening damage
Material Corrosion ResistanceExtends service life in harsh conditions

5. Application Fields

Primary industries include industrial automation (programmable logic controllers), avionics (flight control panels), medical equipment (diagnostic imaging machines), and broadcast systems (video routers). Legacy computer systems (CNC machines) and military communications equipment remain significant deployment areas.

6. Leading Manufacturers & Products

ManufacturerRepresentative Products
TE ConnectivityDEUTSCH D-Sub series, ARINC 404 jackscrews
Amphenol97 Series high-vibration connectors, captive jackscrew kits
MolexMicroChange D-Sub connectors, quick-lock assemblies
SamtecHigh-speed D-Sub solutions, gold-plated jackscrews

7. Selection Recommendations

Key considerations: contact density requirements, environmental conditions (temperature/vibration), EMI shielding needs, and compliance with standards (MIL-DTL-24308, IEC 60087). For high-vibration environments, specify jackscrews with anti-backout features. Aerospace applications require lightweight composite shells, while industrial settings prioritize corrosion-resistant platings.

8. Industry Trends

Current developments focus on hybrid connectors integrating D-Sub with fiber optics, nanocoatings for extreme environments, and miniaturized designs maintaining backward compatibility. The market is shifting toward high-speed differential signaling capabilities (up to 10Gbps) while maintaining legacy form factors for equipment retrofits.

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