Document and Entity Information - shares	3 Months Ended
	Sep. 29, 2019	Sep. 30, 2019
Cover [Abstract]
Entity Registrant Name	STRATTEC SECURITY CORP
Entity Central Index Key	0000933034
Document Type	10-Q
Document Period End Date	Sep. 29, 2019
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--06-28
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity File Number	0-25150
Entity Incorporation, State or Country Code	WI
Entity Tax Identification Number	39-1804239
Entity Address, Address Line One	3333 West Good Hope Road
Entity Address, City or Town	Milwaukee
Entity Address, State or Province	WI
Entity Address, Postal Zip Code	53209
City Area Code	414
Local Phone Number	247-3333
Document Quarterly Report	true
Document Transition Report	false
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock Shares Outstanding		3,807,026
Security Exchange Name	NASDAQ
Trading Symbol	STRT
Title of 12(b) Security	Common stock