National Instruments NI 9974 36-position spring terminal plug

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National Instruments · CompactDAQ / CompactRIO

NI 9974

The NI 9974 is a 36-position spring terminal connection accessory for compatible C Series modules used in CompactDAQ and CompactRIO systems. It is a terminal plug, not a data acquisition module.

ManufacturerNational Instruments

ModelNI 9974

Part Number785502-01 · 196740-01

Product Type36-position spring terminal plug

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Product typeSpring terminal plug

Connection positions36

System platformsCompactDAQ and CompactRIO

Manufacturer part numbers785502-01; 196740-01

Mechanical resources2D drawings and 3D CAD models for both part numbers

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Overview

Product overview

Key product information and technical features.

The NI 9974 provides a removable wiring connection for supported 36-position C Series hardware. Its role is module-front connectivity rather than signal acquisition or processing.

NI documents replacement of damaged or missing spring terminal connectors using the NI 9974. The connector block is secured to the module with screws at its top and bottom.

36-position spring terminal connectivity.
Module-front mounting on compatible C Series hardware.
Replaceable connector block with top and bottom securing screws.
Official PDF and DXF drawings, plus PRT, STP and IGS CAD models.

Verified specifications

Technical data

Verified product specifications.

Product type	Spring terminal plug
Terminal positions	36 positions
Module-side connection	36-pin male COMBICON
Mounting	C Series module front
Manufacturer part numbers	785502-01; 196740-01

Condition & included items

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Condition

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Included

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Compatibility

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National Instruments

Manufacturer

CompactDAQ / CompactRIO

System platforms for supported C Series hardware

C Series module

Host hardware with a compatible 36-position spring terminal connection

NI 9974

Removable terminal connection accessory

Match the module's connector variant and hardware version to NI's accessory guide; C Series membership alone does not establish compatibility.

Manuals & software

Technical resources

Manuals, software and technical resources for this model.

NI-9974 Official Product PageProduct Page · ni.com

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C Series Spring Terminal I/O Cable & Accessory GuideCompatibility Guide · ni.com

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NI-9974 Dimensional DrawingsDimensional Drawings And CAD Models · ni.com

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Replace Spring Terminal Connector For NI C Series ModuleSupport Article · knowledge.ni.com

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NI 9974 Mechanical Drawings and CAD FilesTechnical resource

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C Series Spring Terminal Connector Replacement ProcedureTechnical resource

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Alternatives & system components

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CompactDAQ

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FAQ

Product-specific questions

Product-specific answers based on available technical information.

Is the NI 9974 a PXI Express data acquisition module?

No. NI identifies the NI 9974 as a terminal connection accessory for compatible CompactDAQ and CompactRIO hardware, not a PXI Express measurement module.

Can the NI 9974 replace a damaged module connector?

Yes, for compatible modules. NI's replacement procedure describes removing the connector's top and bottom screws, replacing the block and securing the new connector.