A century of Bay Area machining.
Established in 1921, Howlett Machine Works has manufactured a wide variety of components for the construction industry — and held more than 25 U.S. patents along the way.
From construction hardware to test fixtures.
For decades, Howlett developed and manufactured components for the construction industry — anchorages, couplers and post-tensioning systems used on structures across the country.
More recently, we’ve focused on machining test samples for local test labs in the San Francisco Bay Area, and supplying both custom and standard test fixtures to labs all over the U.S. — including the Howlett Rebar Test Fixture, Cylinder Bond Test Fixture, an apparatus for bonding strength tests in center-point loading, twin ram jacking setups for dowel testing, rebar wedges and pulling heads.
25+ U.S. patents.
Howlett Machine Works is established
A Bay Area machine works serving the construction industry.
Grip Nut Anchorage & Grip Coupler
The Howlett Grip Nut Anchorage and the Howlett Grip Coupler for bar tendons.
Custom Drive Transmission
The Howlett Custom Drive Transmission.
Tank Post-Tensioning System
The Howlett Tank Post-Tensioning System.
S/H Multistrand Anchorage
The S/H Multistrand Anchorage.
No-Slip Threaded Rebar Coupler
The Fox-Howlett No-Slip Threaded Rebar Coupler — and many more patents to follow.
Test fixtures & specimens
Machining test samples for Bay Area labs and supplying standard and custom test fixtures to labs all over the U.S.
Precision
Specimens and fixtures machined to the standard or drawing you specify.
Personal service
Call and talk directly to Mike about price, availability and design.
Nationwide
Supplying labs and DOTs across the U.S. from our Berkeley shop.
Need a fixture that doesn’t exist yet?
Send Mike your drawing, sketch or requirements. We answer all inquiries within two business days.