John Chadwick Corporation

1005 S Mountain Ave, Monrovia, CA 91016

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

Other Measuring and Controlling Device Manufacturing334519

Optical Depth Micrometer
handheld inspection microscope
surface damage
Air Operations
scratch keep

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

Products

Sold by JOHN CHADWICK CORPORATION · 8

Aircraft Maintenance And Repair Shop Specialized Equipment · Batteries, Nonrechargeable · Hardware, Commercial · Laboratory Equipment And Supplies · Miscellaneous Chemical Specialties · Miscellaneous Electrical And Electronic Components · Optical Instruments, Test Equipment, Components And Accessories · Physical Properties Testing And Inspection

Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.

Where these came from

8 from usaspending_psc · Federal registry

Supplied under federal award SPE4A625PW003 (2025-06-25), PSC . An award shows what the government bought from this company; it does not establish which of its sites made it.

Where it is

34.14185, -117.98634 · CENSUS TIGER

COUNTY

Los Angeles County

METRO AREA

Los Angeles-Long Beach-Anaheim, CA

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STREET VIEW

Open street-level view — MAY 2024

Other plants nearby

Facility	City	Industry	Status	Distance
Mcdonnell Douglas Aerospace	Monrovia	Other Electronic Component Manufacturing 334419	UNVERIFIED	0.4 KM
Photon Spot INC	Monrovia	Analytical Laboratory Instrument Manufacturing 334516	ACTIVE	1.5 KM
Amada Weld Tech INC	Monrovia	Welding and Soldering Equipment Manufacturing 333992	ACTIVE	1.7 KM
Genefluidics INC	Irwindale	Analytical Laboratory Instrument Manufacturing 334516	UNVERIFIED	2.2 KM
Shore Western Mfg INC	Monrovia	Machine Shops 332710	UNVERIFIED	2.0 KM

Every listed plant in Los Angeles 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.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record FY4RYUZ8J5U6 · first seen MAY 2026 · last seen MAY 2026
DOL Form 5500 retirement plan filingsOPERATING
Record 954306887|CA|91016|1005 s mountain ave · first seen DEC 2024 · last seen DEC 2024
SBA Paycheck Protection Program loan recordsEXISTENCE
Record CA|monrovia|1005 mountain ave s · first seen APR 2020 · last seen APR 2021

IN LOS ANGELES COUNTY338 other plants share this one’s industry (Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, NAICS 3345); 73 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: SAM.gov: JOHN CHADWICK CORPORATION · MAY 2026
Street address: SAM.gov: 1005 S MOUNTAIN AVE · MAY 2026
City: SAM.gov: MONROVIA · MAY 2026
State: SAM.gov: CA · MAY 2026
Coordinates: Census geocoder: 34.141854857303,-117.986340075414 · JUL 2026
Employees (band): DOL: 1-19 · DEC 2024
Website: SAM.gov: http://www.jchadwickco.com · MAY 2026
CAGE code: SAM.gov: 65956 · MAY 2026
Retirement plan filing (Form 5500): DOL: 2 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
PPP loan: SBA PPP: PPP loan x1, approved 2020-04-30, 5 jobs reported · APR 2020
SAM registration expires: SAM.gov: 2027-05-13 · MAY 2026

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