Hand Crimping Tools for
Bench, Prototype, and Field Use

Precision Hand Tools Backed by 70 Years of Terminal Crimping Experience

Diamond Die & Mold hand crimping tools deliver reliable, repeatable terminations for wire harness, cable assembly, and electrical termination work where a press or automated line isn’t required. Every tool in our 088 Series is engineered for professional use in prototyping, low-volume production, field service, and repair environments.

No-Cost Hand Tool Quote
Diamond Die Hand Crimp Tool used for field service and prototyping

Professional-Grade Construction

Every 088 Series tool is built for professional use with the same precision Diamond Die & Mold applies to our production applicators:

  • Hardened A2 tool steel crimp components for wear resistance and long service life
  • Cast handles for durability and ergonomic grip
  • Estimated cycle life of 50,000+ cycles with proper handling and cleaning
  • Crimp geometry matched to production applicators for prototype-to-production consistency
  • Available with or without ratchet mechanism, commonly known as positive stop functionality
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The 088 Series Hand Tools

Five professional-grade hand crimping tool styles, each engineered for a specific terminal type and application. Each style is available with a ratchet mechanism (indicated by the “R” suffix), which is how most customers order.

The “B, D, E, W” designations refer to the shape and style of the crimp. The ratchet assembly is offered as a $25 upgrade and is typically handled through the quotation process.

088BR Crimp Pliers (with Ratchet)

Interchangeable tooling for open grip terminals.

Specifications:

  • Wire capacity: 28 AWG to 10 AWG (8 and 10 AWG may require a vice to assure full closure)
  • Interchangeable tooling plier design
  • For open grip terminals
  • Available with or without ratchet feature

Best for: Bench work, prototyping, and low-volume production where terminal geometry varies across projects.

088RR Multi-Crimper (with Ratchet)

Five-station multi-crimper for high-volume bench work across multiple wire sizes and crimp styles.

Specifications:

  • Wire capacity: 28 AWG to 14 AWG across the five crimp stations depending on terminal geometry
  • Available with or without ratchet feature

Station

Crimp Width (CW)

Crimp Height (CH)

#1

0.125″ (3.175 mm)

0.094″ (2.388 mm)

#2

0.096″ (2.438 mm)

0.072″ (1.828 mm)

#3

0.096″ (2.438 mm)

0.044″ (1.118 mm)

#4

0.155″ (3.937 mm)

0.125″ (3.175 mm)

#5

0.150″ (3.810 mm)

0.120″ (3.048 mm)

Best for: Professionals handling a variety of terminal sizes and wire gauges in a single tool. Widely used in automotive (including EV), aerospace, and industrial manufacturing.

088DR Crimp Pliers (with Ratchet)

Multi-sized closed grip terminal pliers with a single indent design. The “D” refers to the crimp shape, which is round on one side with an indention on the other that is also round, creating a cross section that resembles the letter D.

Specifications:

  • Wire capacity: 28 AWG to 14 AWG depending on terminal geometry
  • Multi-size crimping capability for closed grip terminals
  • Single indent design
  • Available with or without ratchet feature

Best for: Closed grip terminal applications where a secure, D-shaped enclosed connection is required for protection against moisture, corrosion, or vibration.

088DR Crimp Pliers (with Ratchet)

Multi-sized closed grip terminal pliers with a single indent design. The “D” refers to the crimp shape, which is round on one side with an indention on the other that is also round, creating a cross section that resembles the letter D.

Specifications:

  • Wire capacity: 28 AWG to 14 AWG depending on terminal geometry
  • Multi-size crimping capability for closed grip terminals
  • Single indent design
  • Available with or without ratchet feature

Best for: Closed grip terminal applications where a secure, D-shaped enclosed connection is required for protection against moisture, corrosion, or vibration.

088ER Crimp Pliers (with Ratchet)

Multi-sized closed grip terminal pliers with a pancake-shaped crimp profile. The “E” style creates a crimp that is flat on the top and bottom with rounded sides.

Specifications:

  • Wire capacity: 28 AWG to 14 AWG depending on terminal geometry
  • Multi-size crimping capability for closed grip terminals
  • Flat top and bottom, rounded sides
  • Available with or without ratchet feature

Best for: Closed grip terminal applications where a flat-profile crimp is required for clearance, seating, or connector fit.

088WR Crimp Pliers (with Ratchet)

All-purpose standard pliers with two crimp stations, engineered for a wider range of general-purpose crimping.

Specifications:

  • Wire capacity: 14 AWG to 10 AWG depending on terminal geometry
  • Two-station design
  • Can be engineered for customer-specific crimp width and height
  • Available with or without ratchet feature

Station

Crimp Width (CW)

Crimp Height (CH)

#1

0.116″ (2.95 mm)

0.059″ (1.50 mm)

#2

0.160″ (4.06 mm)

0.118″ (3.00 mm)

Best for: General-purpose crimping across mixed applications where two crimp stations cover the required range. Custom crimp width and height configurations available.

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Ratchet Mechanism (Positive Stop) for Consistent Crimp Pressure

Every 088 Series tool is available with an optional ratchet mechanism, commonly known as a positive stop. The ratchet ensures the crimp is fully completed before the tool releases, preventing incomplete or weak connections that could compromise your termination quality.

For professionals working on high-precision or high-volume tasks, the ratchet delivers:

  • Uniform crimping pressure on every cycle
  • Reduced risk of operator error
  • Consistent results across shifts and technicians
  • Faster training for new operators

The ratchet assembly is offered as a $25 upgrade and is included in most orders. Pricing is confirmed through the quotation process.

Custom-Engineered Hand Tools Built to Your Terminals and Wire Specs

Standard hand tools don’t always fit your terminals. Diamond Die & Mold can engineer custom hand tools built to your specific:

  • Terminal series and supplier
  • Wire gauge and insulation type
  • Crimp width and height requirements
  • Pull-force and quality standards

If our 088 Series doesn’t have the exact configuration you need, our engineering team can design a custom hand tool to your specifications. Reverse engineering is available for legacy or discontinued tools where prints no longer exist.

Send us your terminal and wire specs, or send us the worn tool you need replaced. We’ll measure, model, and build the solution.

No-Cost Spec Analysis

Industry Applications

Our 088 Series hand tools support wire termination work across:

Automotive and EV Manufacturing

Precision crimps for battery systems, wiring harnesses, and charging infrastructure. Handles EV assembly, prototyping, and field service applications.

Aerospace

Consistent crimps for avionics wiring, structural connections, and mission-critical applications where reliability standards are non-negotiable.

Industrial Manufacturing

Durable terminations for power distribution systems, control panels, heavy machinery, and intricate electrical assemblies.

Wire Harness and Cable Assembly

Bench work, prototype development, and specialty assembly where portable, press-quality crimps are needed.

Field Service and Maintenance

Portable crimp quality for repair, service work, and on-site termination.

When to Choose Hand Tools Over a Press

Hand tools aren’t a downgrade from press-based crimping. They’re the right choice when:

  • You’re building prototypes and don’t want to commit a press
  • Production volume is low or specialty
  • You need portable capability for field service or repair
  • You need backup crimping when your press is offline
  • You’re validating a new terminal or wire configuration before scaling to production

For higher-volume production, our full line of applicators and presses provides fully automated crimping. Our hand tools give you the same crimp geometry in a portable format.

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X6 Press Gen IA

Backed by Woman-Owned Small Business and ISO 9001 Certification

Diamond Die & Mold is a Woman-Owned Small Business (WOSB) certified by the SBA and holds ISO 9001 quality management certification. Our hand tools support:

  • Federal contract requirements for supplier diversity
  • Fortune 500 supplier diversity programs
  • Automotive, Aerospace and medical device buyers requiring ISO 9001 compliance

Every hand tool is designed, machined, and finished in Clinton Township, Michigan.

What to Know About Our Hand Crimping Tools

What is a hand crimping tool and how does it work?

A hand crimping tool is a manual device that joins a wire to a terminal by compressing the terminal around the wire, creating a secure electrical connection. When used with the proper technique and matching tool, hand crimping produces the same connection quality as press-based crimping without the need for solder.

When should I use a hand tool versus a crimping press?

Hand tools are best for prototypes, low-volume production, specialty assemblies, field service, and repair work. Presses are better for high-volume, repeatable production where speed and consistency at scale matter more than portability.

What's the difference between the 088BR, 088DR, 088ER, 088RR, and 088WR?

The letters refer to the crimp shape and style. The 088BR is for open grip terminals with interchangeable tooling. The 088DR and 088ER are for closed grip terminals, with the “D” creating a D-shaped cross section and the “E” creating a pancake-shaped crimp. The 088RR is a five-station multi-crimper for mixed applications. The 088WR is an all-purpose two-station pliers that can be engineered to custom crimp width and height. The “R” at the end means the tool includes the ratchet mechanism.

Is the ratchet feature worth adding?

For most professional applications, yes. The ratchet, commonly known as a positive stop, ensures each crimp is fully completed before the tool releases, preventing incomplete crimps that could compromise connection integrity. It’s a $25 upgrade and is included in most orders.

What wire gauges can your hand tools handle?

Our 088 Series typically covers 28 AWG to 10 AWG. Wire gauges of 8 AWG and 10 AWG may require a vice to assure full closure, depending on terminal geometry.

What are your hand tools made of?

The crimp components are hardened A2 tool steel for wear resistance and long service life. Handles are cast material for durability and ergonomic grip.

How long do your hand tools last?

While we don’t publish a formal cycle life rating, 50,000+ cycles is a realistic estimate with proper handling and cleaning of the tool.

Can you build a custom hand tool for my specific terminal?

Yes. If our standard 088 Series doesn’t match your terminal geometry, wire gauge, or application requirements, we can engineer a custom hand tool built to your specifications. The 088WR is particularly well-suited for custom crimp width and height configurations. Send us your terminal and wire specs to get started.

Do you offer replacement parts or repair for legacy hand tools?

Yes. Through our reverse engineering service, we can rebuild worn or discontinued hand tools, even without original drawings. Send us the tool and we’ll measure, model, and reproduce the components you need.

Explore Additional
Diamond Die & Mold Services

Reverse engineering is often the first step. Once your replacement tool is in production, most customers expand into one or more of these services to keep their operations running.

Hydraulic Hand Tools

Hydraulic crimping power for large gauge wire and high-force terminations.

Crimping Presses

6-ton and 22-ton presses matched to your terminal and applicator setup.

Perishable Tooling

High-precision replacement tooling built for repeat use in high-volume production.

Crimp Analysis

Terminal crimp cross-section analysis to validate quality and reduce defects.