Department of Transportation (DOT): NAICS 561621 — Security Systems Services (Except Locksmiths)

0open solicitations

$34.0Mobligated in FY2026

16contracts ending within 18 months

Open solicitations

Nothing is open in this category right now.

How DOT NAICS 561621 spends

FY2021$8.2M

FY2022$21.2M

FY2023$23.1M

FY2024$20.4M

FY2025$25.2M

FY2026$34.0M

FY2027*$290K

Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

DOT NAICS 561621 contracts expiring in the next 18 months

16 contracts worth $52.0M.

Incumbent	Buyer	What	Value	Ends	Est. solicitation	Record
S & K SECURITY GROUP LLC	FAA	561621 Security Systems Services (Except Locksmiths)	$329K	16 November 2026	Now / imminent	Details
JOHNSON CONTROLS, INC	FAA	561621 Security Systems Services (Except Locksmiths)	$30K	23 November 2026	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$5.9M (4 orders)	31 December 2026	Now / imminent	Details
SIGNET TECHNOLOGIES, INC.	Immediate Office of the Secretary of Transportation	561621 Security Systems Services (Except Locksmiths)	$45K	31 December 2026	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$1.8M	29 January 2027	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$6.4M	08 March 2027	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$372K (3 orders)	31 March 2027	Now / imminent	Details
OPTIMUM LOW VOLTAGE LLC	FAA	561621 Security Systems Services (Except Locksmiths)	$46K	31 March 2027	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$351K (3 orders)	19 April 2027	Now / imminent	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$2.4M (2 orders)	22 May 2027	~Q4 2026	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$6.0M (2 orders)	31 July 2027	~Q1 2027	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$12.0M (5 orders)	15 August 2027	~Q1 2027	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$1.8M (5 orders)	30 September 2027	~Q2 2027	Details
HIDENIS GROUP LLC	Saint Lawrence Seaway Development Corporation	561621 Security Systems Services (Except Locksmiths)	$221K	19 November 2027	~Q2 2027	Details
M. C. DEAN, INC.	FAA	561621 Security Systems Services (Except Locksmiths)	$13.3M (12 orders)	31 December 2027	~Q3 2027	Details

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

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