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

Image Part Number Description / PDF Quantity Rfq
320-9506-000

320-9506-000

VEAM

JACKPOST BUSHING KIT

0

D20418-131

D20418-131

VEAM

DSUB FEMALE SCREW LOCK CAD X2

276

1731120612

1731120612

Woodhead - Molex

FCT SCREW SET M3/M3 10.3 TIN PLA

0

J-SL-1C

J-SL-1C

JST

LOCK SCREW D SUB 4-40

0

621-250-125-115

621-250-125-115

EDAC Inc.

JACK SCREW HEX NUT

0

C115420-0100C

C115420-0100C

C&K

340102267B NMB

0

09670019997

09670019997

HARTING

JACK SCREW M3

0

C115419-1001C

C115419-1001C

C&K

340102250B

0

D20420-162

D20420-162

VEAM

DSUB MALE SCREW LOCK X2

60

CWN-HK-01

CWN-HK-01

CW Industries

HARDWARE MOUNTING KIT 2-56

0

C115420-0103C

C115420-0103C

C&K

340102272B NMB

0

863008ATLF

863008ATLF

Storage & Server IO (Amphenol ICC)

DSUB MALE SCREW LOCK

0

L17D2041918X

L17D2041918X

Storage & Server IO (Amphenol ICC)

DSUB M SCREW LOCK ASSBLY

0

5745579-3

5745579-3

TE Connectivity AMP Connectors

CONN JACKSCREW SLIDELATCH #2-56

0

09670029126

09670029126

HARTING

RA CON F SL M3-M3 FOR CODING,2.0

0

2-1393560-0

2-1393560-0

TE Connectivity AMP Connectors

D-SUB ACCS

0

M24308/25-6P

M24308/25-6P

PEI-Genesis

D00000E20-MIL-462-23

145

C020418-0070C

C020418-0070C

C&K

340102206B NMB

0

1731120712

1731120712

Woodhead - Molex

FCT SCREW SET 4-40/4-40 11.0 ZIN

0

JSX-M3131M

JSX-M3131M

Kycon

JACK SCREW M3 METRIC EXT. THREAD

0

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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