Mack Prototype, INC

424 Main St, Gardner, MA 01440

ACTIVELAST SEEN IN FEDERAL DATA OCT 2026 · 4 SOURCES

Operating signal within 12 months from two or more independent sources.

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Their homepage, crawled JUL 2026

What they make

All Other Plastics Product Manufacturing326199

3D printing
additive manufacturing
cast urethane molding
CNC machining
injection molding
prototyping
low-volume production
programs
full development lifecycle

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Products

Made or handled here · 3

Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer · Prosthesis, Knee, Patello/Femorotibial, Semi-Constrained, Uncemented, Porous, Coated, Polymer/Metal/Polymer · Template

Where these came from

3 from FDA device registration · Federal registry

FDA device establishment 3005279746, product code JWH

CAREERS

Careers page — seen SEP 8, 2026

Where it is

42.56870, -71.98945 · CENSUS TIGER

COUNTY

Worcester County

METRO AREA

Worcester, MA

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STREET VIEW

Open street-level view — AUG 2025

Other plants nearby

Facility	City	Industry	Status	Distance
Garlock Flexibles Converting	Gardner	Commercial Printing (except Screen and Books) 323111	LIKELY ACTIVE	1.6 KM
Garlock Printing & Convertin	Gardner	Stationery Product Manufacturing 322232	UNVERIFIED	1.5 KM
Advanced Cable Ties INC	Gardner	All Other Plastics Product Manufacturing 326199	ACTIVE	4.4 KM
Mayhew Basque Plastics LLC	Westminster	Unlaminated Plastics Profile Shape Manufacturing 326121	LIKELY ACTIVE	5.6 KM
ITW Automotive	Westminster	All Other Plastics Product Manufacturing 326199	LIKELY ACTIVE	9.6 KM

Every listed plant in Worcester County

Also at this address

No other federal record shares this street address.

Where this record comes from

4 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, MA-EPICS, RCRAINFO · EPA site type STATIONARY.

FDA device establishment registrationsOPERATING
first seen AUG 2026 · last seen OCT 2026
The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record GLKDY6S9KAR9 · first seen FEB 2026 · last seen OCT 2026
EPA Facility Registry ServiceEXISTENCE
Record 110012240887 · first seen OCT 2016 · last seen OCT 2016

IN WORCESTER COUNTY74 other plants share this one’s industry (Plastics Product Manufacturing, NAICS 3261); 26 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name: EPA: MACK PROTOTYPE INC · JUL 2026 · ON THIS PAGE; SAM.gov: MACK PROTOTYPE, INC · ON THIS PAGE
Street address: EPA: 424 MAIN ST · JUL 2026 · ON THIS PAGE; SAM.gov: 424 MAIN ST · ON THIS PAGE
City: EPA: GARDNER · JUL 2026 · ON THIS PAGE; SAM.gov: GARDNER · ON THIS PAGE
State: EPA: MA · JUL 2026 · ON THIS PAGE; SAM.gov: MA · ON THIS PAGE
County (FIPS code): EPA: 25027 · SEP 2026
Coordinates: EPA: 42.5687,-71.98945 · JUL 2026
Website: SAM.gov: http://www.mackprototype.com/
Year established: CT SOTS: 1999 · MAY 1999
CAGE code: SAM.gov: 3ECK5
SAM registration expires: SAM.gov: 2027-02-03
State business registration: CT SOTS: MACK PROTOTYPE, INC., registered with the Connecticut Secretary of the State; Corporation; formed 1999-05-13; merged · JUN 2000

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