Digi-Key does not currently carry the Mac8 HK-5-S-Black . We do have some similar low profile 2.5x3.0 SMD test points available.
The part numbers 5190TR – 5199TR from Keystone can be considered as a similar alternative.
Applicable part numbers
5190TR
5191TR
5192TR
5193TR
5194TR
5195TR
5196TR
5197TR
5198TR
5199TR
36-5190TR-ND,36-5190CT-ND,36-5190DKR-ND
36-5191TR-ND,36-5191CT-ND,36-5191DKR-ND
36-5192TR-ND,36-5192CT-ND,36-5192DKR-ND
36-5193TR-ND,36-5193CT-ND,36-5193DKR-ND
36-5194TR-ND,36-5194CT-ND,36-5194DKR-ND
36-5195TR-ND,36-5195CT-ND,36-5195DKR-ND
36-5196TR-ND,36-5196CT-ND,36-5196DKR-ND
36-5197TR-ND,36-5197CT-ND,36-5197DKR-ND
36-5198TR-ND,36-5198CT-ND,36-5198DKR-ND
36-5199TR-ND,36-5199CT-ND,36-5199DKR-ND