A Trial to Investigate Different Needle Features Assessed by Comparing Insulin Aspart Pharmacokinetic Profiles

Inclusion Criteria: * Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine suitability for the trial * Male, age at least 18 years at time of signing informed consent * Considered generally healthy upon completion of medical history, physical examination, analysis of laboratory safety variables, vital signs and ECG (electrocardiogram), as judged by the investigator * Body mass index (BMI) 28-39.9 kg/m\^2 (overweight to obese) * Caucasian Exclusion Criteria: * Male of reproductive age who or whose partner(s) is not using adequate contraceptive methods (adequate contraceptive measures as required by local regulation or practice) * Non-fasting blood glucose test with blood glucose values above 11.1 millimol per liter (mmol/L) * HbA1c (Glycosylated Haemoglobin) equal to or above 6.5% * Known active or in-active skin disease in the injection area or that could affect pain perception * History of deep leg vein thrombosis or repeated episodes of deep leg vein thrombosis in 1st degree relatives (parents, siblings or children) as judged by the investigator * Use of any prescription or non-prescription medication, including herbal products and nonroutine vitamins, within the last 2 weeks before screening * Smoker (defined as a subject who is smoking more than 5 cigarettes or the equivalent per day) who is not able or willing to refrain from smoking or use of nicotine gum or transdermal nicotine patches during the inpatient period * Known or suspected abuse of alcohol (defined as regular intake of more than 14 units weekly for men where 1 unit equals 300 milliliter (mL) of beer, 100 mL of wine, or 25 mL of distilled spirits) * Positive result of an alcohol breath test * Known or suspected drug/chemical substance abuse within 1 year from screening