Hamilton · Khaki Field

Strap for Khaki Field Quartz 40 PVD / Black

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
ReferenceH68401735
FamilyKhaki Field
MovementETA caliber F07.111 Hours, Minutes, Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Khaki Field H68401735

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Khaki Field H68401735, seen from the bench

The Hamilton Khaki Field Quartz H68401735 is a 40 mm stainless steel tactical watch with a khaki dial, featuring the ETA F07.111 automatic movement with 25 jewels and over 40 hours power reserve. It includes hours, minutes, seconds, and date functions, with a sapphire crystal and anti-reflective coating. The 20 mm lug width ensures balanced proportions on the 40 mm case, with spring bar attachments protruding approximately 2 mm for lateral stability.

Frequently asked questions

What is the lug width of the Hamilton Khaki Field H68401735?

The H68401735 features a 20-millimetre lug width. This dimension is specific to the model and complies with international strap compatibility standards. The attachment depth measures approximately 23–24 millimetres, accommodating standard watch straps. We recommend verifying measurement with a digital calliper placed transversely between the lugs.

Which strap is recommended for the Khaki Field H68401735?

The Khaki Field pairs exceptionally well with leather straps (alligator, calf, shell cordovan), NATO-style nylon ripstop ribbons, and FKM rubber deployantes. Vegetable-tanned leather preserves the instrument's vintage character, whilst NATO straps provide tactical practicality. Rubber excels in humid environments or sport-focused wear. MilanoStraps offers customisable options for every preference.

How do you change the strap on the Hamilton Khaki Field H68401735?

Use a spring bar tool or fine-pointed flatware implement. Insert the point into the lateral spaces of the spring bar attachment, apply gentle pressure to release the pin, extract the previous strap and insert the replacement, securing the bar into its seating. The operation requires approximately 30 seconds per side. Avoid forcing to prevent damage to the lug tube.

Is a 20mm aftermarket strap compatible with the H68401735?

Yes, any strap featuring a 20-millimetre lug width is compatible. Hamilton's spring bar attachments are of standard specification and the accommodation depth follows international norms. Ensure the strap thickness does not exceed 3.5–4mm to prevent lateral play. MilanoStraps straps have been tested to guarantee optimal fit and fluid rotation.

How long does a leather strap last on the Khaki Field H68401735?

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3–5 years under daily wear, developing characteristic patina. Longevity depends on solar exposure, humidity and frequency of use. Vegetable-tanned leather generally exceeds the lifespan of chrome-tanned leather. MilanoStraps recommends periodic maintenance—conditioning every 6–12 months—to extend service life.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only