Introducing: The Hamilton Khaki Field Mechanical In New Colors (Live Pics & Pricing)

Any new iteration of the Hamilton Khaki Field Mechanical has big shoes – or rather, big combat boots – to fill. What you’re looking at is the progeny of a bona fide piece of American history.  This update to the classic Khaki feels like it’s hit the target. At 38mm it’s modern and wearable, while still maintaining that sort of old-school cool that’s been in American military watch DNA since the ’40s, and it comes with new green and white dials, along with a new case finish called  Earth PVD.  When it comes to American military watches, all roads lead to an old set of government specifications put out by the Army Ordnance Department to major watchmakers in the 1940s: a robust hackable movement, tough crystal, center sweeping seconds, and a one-piece strap. In short, it was the perfect recipe for a watch that could take a bit of roughing up; it left out anything it didn’t need in order to do one thing well, and that one thing was simply telling the time.  Hamilton answered the government’s call and produced watches for Allied forces during WW2. It can be argued that this is when the “modern” field watch came to be, setting the tone for thi...

IntroductionSpecification Comparison      Material      Manufacture      Dimensional Tolerances           Wall Thickness           Outside Diameter      Surface Finish      Weld Bead      Heat Treatment

IntroductionSpecification Comparison      Material      Manufacture      Dimensional Tolerances           Wall Thickness           Outside Diameter      Surface Finish      Weld Bead      Heat Treatment      Mechanical Properties      Non-Destructive InspectionWhich Specification This article provides the alternative specifications for the Australian food industry service. Such specifications include: ASTM A269 “Specification for seamless and welded austenitic stainless steel tubing for general service” ASTM A249 “Specification for welded austenitic steel boiler, super heater, heat exchanger, and condenser tubes” AS1528 was revised in 2001 by key stakeholders in the Australian food manufacturing and tube industries. AS 1528 is unique, in that it covers all the associated fittings in addition to the tube. All specifications pertain to common grades, such as grades 304, 304L, 316 and 316L. AS1528.1 covers all grades of duplex and austenitic stainless steel listed in ASTM A240. All specifications need fusion-welded products without filler metals. Specifications such as ASTM A270, ASTM A269 and AS 1528 also cover seamless products. AS 1528 specifies nominal thicknesses of 1.6mm for...