Unshrouded design gives you access to the pins for wire wrapping or test points after soldering.
The closest functional peer is 1376779-2, also a 4-position, single-row, through-hole header with gold mating finish. The key difference: 1376779-2 uses 8.00 µinch gold on the mating surface versus 15.0 µinch on this part. For applications with fewer than 50 mating cycles over the product life, the thinner gold is adequate; for field-service or test points cycled more often, the 15.0 µinch layer gives a wider margin before base-metal exposure.