NAICS 561621 · Administrative and Support and Waste Management and Remediation Services

Security Systems Services (except Locksmiths)

10,115 active contractors list NAICS 561621 (Security Systems Services (except Locksmiths)) in SAM.gov; 7,305 are small under its SBA size standard and 1,733 list it as their primary NAICS.

Learn more about NAICS size standards

Search with filters Small businesses only

Active contractors: 10,115
Small under 561621SBA size standard for this code: 7,305
Primary NAICSTheir main line of business: 1,733
Hidden registrationsExcluded, expired or inactive: 112

Work this industry

Live RFPs in this NAICS
Open SAM.gov solicitations coded 561621, matched to teaming partners.
Expiring awards
Incumbent contracts in 561621 heading to recompete in the next 18 months.
Small under 561621
Partners SAM.gov lists as small under this code: the size check a set-aside uses.

Size is NAICS-specific: a firm can be small under one code and other than small under another. Learn more about small business set-asides

Contractors listing NAICS 561621

Claimed profiles come first by membership level, then companies with 561621 as their primary NAICS, then federal obligations over the last 36 months. SPRS shows the highest blind bracket met, never the score. Learn more about blind SPRS brackets

112 registrations hidden because they are excluded, expired or inactive in SAM.gov. Include them

Showing 8,801–8,820 of 10,115 contractors

SHOW ME BUSINESS GROUP LLP
UEINVW1U55DM2J8CAGE9ZT39
Location: WAYNESVILLE, MO
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SHREEM BRIZIE LLC
UEIL46GEE65NZU5CAGE0QK90
Location: WEXFORD, PA
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SI3 INC
UEITY6QQUNQ5PV5CAGE8N4S8
Location: SPRING HILL, TNSocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIDEWINDER ELECTRIC CO.
UEIL6TFSW97NYT9CAGE58N20
Location: CLARKSVILLE, OHSocio-economic status (SAM.gov): SBSDB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIDI CORP HOME LLC
UEIFZF8GV4C4YD6CAGE8TM27
Location: EL PASO, TX
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SID MUNSHI INC.
UEIX521YUVNWQA3CAGE99PP7
Location: KENNER, LASocio-economic status (SAM.gov): SBWOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIEMABLE LLC
UEIU7UVP4NVN853CAGE20QR8
Location: HERNDON, VASocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIEMENS GOVERNMENT TECHNOLOGIES INC
UEIR2VGJTEMCNL5CAGE0DZG1
Location: ARLINGTON, VA
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIERRA7 LLC
UEIXHKNVMQT1CL7CAGE18X46
Location: LAWRENCEVILLE, GASocio-economic status (SAM.gov): SBSDBVOSBSDVOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIERRA COMMUNICATIONS INC
UEINMVXE9JXCTS8CAGE9G2X4
Location: DES MOINES, NM
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiringObligated, 36 mo: None on file
SIERRA PACIFIC INNOVATIONS, CORP.
UEIJN5DMK3A1H84CAGE1TLJ7
Location: HENDERSON, NVSocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIERRA SECURITY SYSTEMS, INC.
UEIHTKBQ4FE8B89CAGE3L2T3
Location: BISHOP, CA
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiringObligated, 36 mo: None on file
SIGILITE TECH LLC
UEISX8QL7QR6GY5CAGE1ZS91
Location: SAINT PETERSBURG, FLSocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGNALPATH STRUCTURED WIRING LLC
UEIJAWYEJ6NJ5U1CAGE86Y67
Location: PRAIRIEVILLE, LASocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGNATUREJETS, INC.
DBA SIGNATURE FUEL
UEIK4DJETCWNLF4CAGE81DP5
Location: HOLMDEL, NJSocio-economic status (SAM.gov): SBWOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGNATURE TECHNOLOGIES, INC
UEITDZRQPS8BK49CAGE9M0Q5
Location: WEST ORANGE, NJSocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGNETCYBER LLC
UEIVJ8ALSKNCJM5CAGE83WE6
Location: COLORADO SPRINGS, COSocio-economic status (SAM.gov): SBSDBVOSBSDVOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGNET ELECTRONIC SYSTEMS, LLC
DBA SIGNET ELECTRONIC SYSTEMS INC
UEIZCSJBJE9G488CAGE1XRS7
Location: NORWELL, MA
Secondary NAICSNot listed as small under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SIGWERX INC
UEIM31CG56JS3E5CAGE16Y79
Location: WETUMPKA, ALSocio-economic status (SAM.gov): SBVOSBSDVOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file
SILENT SECURITY SOLUTIONS INC
UEIF793VUZ3LGS2CAGE8FVP6
Location: CARLE PLACE, NYSocio-economic status (SAM.gov): SBVOSBSDVOSB
Secondary NAICSSmall under 561621
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: None on file

Contractors listing NAICS 561621, page 441 of 506
Company	This code	Compliance	SAM.gov	Obligated, 36 mo
SHOW ME BUSINESS GROUP LLP UEINVW1U55DM2J8CAGE9ZT39 Location: WAYNESVILLE, MO	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SHREEM BRIZIE LLC UEIL46GEE65NZU5CAGE0QK90 Location: WEXFORD, PA	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SI3 INC UEITY6QQUNQ5PV5CAGE8N4S8 Location: SPRING HILL, TNSocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIDEWINDER ELECTRIC CO. UEIL6TFSW97NYT9CAGE58N20 Location: CLARKSVILLE, OHSocio-economic status (SAM.gov): SBSDB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIDI CORP HOME LLC UEIFZF8GV4C4YD6CAGE8TM27 Location: EL PASO, TX	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SID MUNSHI INC. UEIX521YUVNWQA3CAGE99PP7 Location: KENNER, LASocio-economic status (SAM.gov): SBWOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIEMABLE LLC UEIU7UVP4NVN853CAGE20QR8 Location: HERNDON, VASocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIEMENS GOVERNMENT TECHNOLOGIES INC UEIR2VGJTEMCNL5CAGE0DZG1 Location: ARLINGTON, VA	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIERRA7 LLC UEIXHKNVMQT1CL7CAGE18X46 Location: LAWRENCEVILLE, GASocio-economic status (SAM.gov): SBSDBVOSBSDVOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIERRA COMMUNICATIONS INC UEINMVXE9JXCTS8CAGE9G2X4 Location: DES MOINES, NM	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expiring	None on file
SIERRA PACIFIC INNOVATIONS, CORP. UEIJN5DMK3A1H84CAGE1TLJ7 Location: HENDERSON, NVSocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIERRA SECURITY SYSTEMS, INC. UEIHTKBQ4FE8B89CAGE3L2T3 Location: BISHOP, CA	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expiring	None on file
SIGILITE TECH LLC UEISX8QL7QR6GY5CAGE1ZS91 Location: SAINT PETERSBURG, FLSocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGNALPATH STRUCTURED WIRING LLC UEIJAWYEJ6NJ5U1CAGE86Y67 Location: PRAIRIEVILLE, LASocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGNATUREJETS, INC. DBA SIGNATURE FUEL UEIK4DJETCWNLF4CAGE81DP5 Location: HOLMDEL, NJSocio-economic status (SAM.gov): SBWOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGNATURE TECHNOLOGIES, INC UEITDZRQPS8BK49CAGE9M0Q5 Location: WEST ORANGE, NJSocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGNETCYBER LLC UEIVJ8ALSKNCJM5CAGE83WE6 Location: COLORADO SPRINGS, COSocio-economic status (SAM.gov): SBSDBVOSBSDVOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGNET ELECTRONIC SYSTEMS, LLC DBA SIGNET ELECTRONIC SYSTEMS INC UEIZCSJBJE9G488CAGE1XRS7 Location: NORWELL, MA	Secondary NAICSNot listed as small under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SIGWERX INC UEIM31CG56JS3E5CAGE16Y79 Location: WETUMPKA, ALSocio-economic status (SAM.gov): SBVOSBSDVOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file
SILENT SECURITY SOLUTIONS INC UEIF793VUZ3LGS2CAGE8FVP6 Location: CARLE PLACE, NYSocio-economic status (SAM.gov): SBVOSBSDVOSB	Secondary NAICSSmall under 561621	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	None on file

Codes these contractors list most often alongside 561621: natural teaming adjacencies.

Security Systems Services (except Locksmiths)

Work this industry

Contractors listing NAICS 561621

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