Technical Archive

Hamilton
Khaki Field H68401735— lug 20mm

Hamilton Khaki Field H68401735: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Khaki Field Quartz 40 PVD / Black

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Hamilton H68401735
Lug Width
20 mm

The essential strap measurement.

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Reference

H68401735

Movement

ETA caliber F07.111 Hours, Minutes, Seconds | Date

The Heritage

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.

FAQ

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. Milano Straps 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. Milano Straps 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. Milano Straps recommends periodic maintenance—conditioning every 6–12 months—to extend service life.