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Keyed Ejector Pins accommodate thicker plates.

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Keyed Ejector Pins accommodate thicker plates.
Keyed Ejector Pins accommodate thicker plates.
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December 12, 2012 - Made from thermal shock-resistant hotwork steel, EXK Keyed Ejector Pins prevent rotation during injection molding process. Precision machining creates key on head of pin to hold pin in place, eliminating damage to parts being molded or mold base itself. Pre-keyed pins also eliminate need for secondary machining. While core of pins has hardness of 40–45 HRC, OD is nitrided to 65–74 HRC; design withstands stress of industrial use. Pins come in 1/8–1 in. dia and 6–25 in. lengths.

DME Launches Line of EXK Keyed Ejector Pins to Accommodate Thicker Plates

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

D-M-E Company
29113 Stephenson Hwy.
Madison Heights, MI, 48071-2383

Press release date: December 10, 2012

Pins as long as 25 inches help reduce secondary machining needs

Madison Heights, Mich. – DME Company, a leading manufacturer of mold technologies, has introduced a line of EXK Keyed Ejector Pins in response to customer demand for a wider range of sizes. The overall DME Keyed Pins line, including its existing THXK Keyed Pins offering, is now doubled in size, and has lengths up to 25 inches, to better meet the needs of molders using thick plates.

Keyed pins are designed to prevent rotation during the injection molding process. Precision DME machining creates the “key” on the head of the pin to hold the pin in place, eliminating damage to the parts being molded or even to the mold base itself.

“The pre-keyed pins eliminate the need for secondary machining, saving customers time and expense,” said John Harding, DME Manager, Global Sourcing. “Many customers have been requesting pins that can be used in thicker plates, and we’ve responded with new sizes.”

Made from superior quality thermal shock-resisting hotwork steel, DME keyed pins are ideal for use in high-temperature applications. On the Rockwell hardness scale, the core of the pins measures a hardness of 40-45HRC. Outside diameter is nitrided to 65-74 HRC. These high scores show that DME Keyed Ejector Pins withstand the stress presented by industrial use.

“We know our pins are used in a lot of very demanding environments, not just for plastics injection, but in industries like die casting as well,” said Harding. “As with all our products, we make them tough, durable and able to handle even the most rugged applications.”

Pins are now available in 1/8- to 1-inch diameters and 6- to 25- inch lengths in both the EXK and THXK Keyed Pins lines.

EXK Keyed Pins Features
Annealed hot forged head provides uniform grain and high tensile strength
Made from H-13 steel
Precision machined flat
Standard EX pin tolerances
Nitrided to 65 – 74 HRC

EXK Keyed Pins Benefits
40 – 45 HRC core allows for drilling, tapping and detail work
Keyed head keeps detail work facing the same direction at all times
21 sizes available in lengths up to 25”

For CAD drawings or more information about Keyed Pins and other DME technologies, please click here.

About DME
DME Company is an essential mold technologies resource to customers worldwide. Through aggressive new product development, global product standardization and a powerful combination of in-house manufacturing centers of excellence and strategic global partnerships, DME is helping customers succeed in changing times. The company’s standard-setting, comprehensive product line — including hot runner systems; control systems; mold bases and components; mold making and molding supplies; and cold runner systems for elastomers — is backed by expert technical service every step of the way. DME also manufactures and sells standard tooling for the die-casting industry. Visit for more information.

Media: For more information, or to schedule an interview, contact Matthew Mente at:
(414) 270-3514 or
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