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Hartwell Corporation

900 Richfield Rd, Placentia, CA 92870

ACTIVELAST SEEN IN FEDERAL DATA AUG 2026 · 3 SOURCES

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

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Homepage of Hartwell Corporation
Their homepage, crawled JUL 2026

What they make

Hardware Manufacturing332510

Hartwell Corporation manufactures aerospace latching systems, including aircraft latches, hinges, hold downs, and door systems for commercial aviation, military aviation, regional and business jets, and helicopters. The company operates business units focused on access panels, heavy duty applications, and propulsion systems, and provides repair station services, design, and manufacturing capabilities.

SUMMARIZED FROM THE COMPANY’S OWN WEBSITE

Products

Made or handled here · 6
adjustable keepers · flat hinges · folding struts · hold open rods 2 · hook latches · rotary pin latches
Where these came from
6 from the company’s own website · Company website
url-slug on https://www.hartwellcorp.com/product/adjustable-keepers/

Where it is

33.86335, -117.82596 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS

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Every listed plant in Orange County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 8 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

EPA cross-references this facility in BR, CA-ENVIROVIEW, HWTS-DATAMART, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.

SourceEvidenceFirst seenLast seen
COMPANY SITEOPERATINGJUL 2026AUG 2026
SAM GOVOPERATINGSEP 2025SEP 2025
EPA FRSEXISTENCEJUN 2017AUG 2024
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
FIELDSOURCESIGNAL
ADDRESS LINE1EPA FRSJUL 2026
ADDRESS LINE1SAM GOVSEP 2025
CAGE CODESAM GOVSEP 2025
CITYEPA FRSJUL 2026
CITYSAM GOVSEP 2025
GEOMEPA FRSJUL 2026
NAMEEPA FRSJUL 2026
NAMESAM GOVSEP 2025
REGISTRATION EXPIRATIONSAM GOVSEP 2025
STATEEPA FRSJUL 2026
STATESAM GOVSEP 2025
WEBSITESAM GOVSEP 2025

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

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