Harbor Island Machine Works Inc


3431 11th Ave SW
Seattle, WA 98134-1007
(206) 682-7637
Today: 6:30 AM to 2:00 AM
Personal Checks, Cash
Precision, efficiency, premium quality.
At Harbor Island Machine, we understand the rigorous nature of job shop machining and eagerly accept the challenges of complex, premium quality manufacturing. We machine a variety of materials to exacting standards. Our work has included precision machining of sophisticated castings, complex tunnel boring heads, high-end oil tool parts, highly technical multiple-lead threads, ultra-precision set-up tooling, and diamond-making equipment.

Established in 1950, Harbor Island Machine Works has maintained top standards and a commitment to state of the art procedures, on-time delivery, and extremely close-tolerance machining.

From a solid beginning in tool making and machine repair, we have grown in capability and expertise to include production as well as one-off machining. Today, our machine tool inventory includes more than 45 CNC, NC, and conventional machining centers.

We have established a superior reputation for on-time, within budget performance while generating a large variety of production and prototype parts weighing as much as 40 tons.
It is our hope that you will contact us at our email when your need for precision, size and sophistication go beyond the capabilities of traditional vendors. In our area of specialization we will return the greatest value for the dollar spent. Our goal is to provide consistent, top quality machining services, on time. We aim to establish long-standing, mutually beneficial relationships with our customers.

Take a turn for the better!
Mulit-axis CNC turning of diameters from 6 to 220 inches.
When your machining needs call for precision, size, and sophistication beyond the capabilities of traditional sources, turn to Harbor Island Machine Works. Our superior machine tools, reliable quality control, and proven experience will return the greatest value for the dollars you spend.

Blanchard surface grinding
Traditionally, effective metal removal from very large flat surfaces has been confined to milling, planing, or reciprocating grinding. And that has been unfortunate because facing by any of these methods can be slow, imprecise, or costly.
Now you have a big alternative. Truly big, because we can rotary grind flat surfaces to 144 inches!

Our Mattison magnetic chucked grinder is a big, powerful machine able to quickly remove large amounts of stock. And in the same set-up finish grind to the surface texture and level of precision that you have come to expect from Harbor Island Machine Works.
Mon 6:30 AM to 2:00 AM
Tue 6:30 AM to 2:00 AM
Wed 6:30 AM to 2:00 AM
Thu 6:30 AM to 2:00 AM
Fri 6:30 AM to 2:00 AM
Sat Closed
Sun Closed

Products and Services


Reviews for Harbor Island Machine Works Inc

Write a review

Browse Seattle Businesses:
Popular | # | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z