Masterclock, Inc.
Masterclock, Inc. is a small business in Saint Charles, MO registered on SAM.gov to bid on federal contracts. It has won about $21,533 in federal prime contracts since fiscal year 2024, according to USAspending.gov's award records for its UEI.
- UEI
- SXT8K5HELZE8
- CAGE code
- 1GZF9
- SAM.gov registration
- Active
Federal contract history
| Fiscal year | Obligated, prime contracts |
|---|---|
| FY2025 | $21,533 |
These are every prime contract USAspending.gov records under UEI SXT8K5HELZE8, from its award search. For a company that is part of a parent company, USAspending's recipient page can show a different figure for a year, because it counts the company's own record and its parent's record separately.
Its biggest federal customers since fiscal year 2024: Drug Enforcement Administration ($21,533).
Recent contract awards
New contracts, by the date each was first signed. Orders and changes to older contracts count in the yearly totals above but aren't listed here, and Defense awards appear 90 days after signing.
| Awarded | Agency | What it's for | Obligated |
|---|---|---|---|
| Aug 28, 2025 | Drug Enforcement Administration | Antennas | $21,533 |
| Jun 22, 2023 | Department of the Navy | 1U rack mount NTP/PTP/irig-B am master C | $24,558 |
| Jun 6, 2022 | Department of the Air Force | GMR5000 multi-function grand master generator | $13,970 |
| May 5, 2022 | Drug Enforcement Administration | Communication items | $20,542 |
| Dec 29, 2021 | Department of the Navy | Multi function grand generator | $116,755 |
Figures are prime contract obligations reported to USAspending.gov. Subcontract work is listed separately below.
Subcontract work reported by primes
Prime contractors reported 2 subcontracts to it worth about $155,748 in the last five years, according to USAspending.gov. Primes only have to report subcontracts of $40,000 or more (since October 1, 2025; $30,000 before that), so smaller jobs are missing. Amounts are net of any cuts primes reported. None of this is in the prime contract figures.
| Prime contractor | For | Subcontracts | Amount | Latest |
|---|---|---|---|---|
| KBR Wyle Services, LLC | National Aeronautics and Space Administration | 2 | $155,748 | May 29, 2025 |
Registration details
Show registration details
From SAM.gov's monthly public file dated Nov 1, 2026. If the business has updated its registration since, SAM.gov shows the newer details.
| Legal business name | Masterclock, Inc. |
|---|---|
| Unique Entity ID (UEI) | SXT8K5HELZE8 |
| CAGE code | 1GZF9 |
| Location | Saint Charles, MO |
| SAM.gov registration | Active through Sep 3, 2027 |
| Business started | 1994 |
| Primary NAICS code | 334220: Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| Website | www.masterclock.com |
| How to contact | Through its website above. No phone or email in SAM.gov's public file. Search UEI SXT8K5HELZE8 in SBA's Small Business Search for a contact the business added. |
Certifications and business types
No SBA certification (8(a), HUBZone or WOSB) in SAM.gov's public file (Nov 1, 2026).
SBA certifications let a business compete for set-aside contracts (set-asides explained). Check the current record on its SAM.gov entry.
How to check or correct this record
The file sometimes leaves a certification out, and a newer one won't be in it yet.
Check or correct this record at the source: open its SAM.gov entry, or search UEI SXT8K5HELZE8 () in SAM.gov's entity search (free sign-in) and in SBA's Small Business Search (formerly DSBS), which shows SBA certifications. The business can update its details in its SAM.gov registration and its certifications at certifications.sba.gov.
NAICS codes Masterclock, Inc. is small under
On its SAM.gov registration, Masterclock, Inc. meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
- 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
- 334418 Printed Circuit Assembly (Electronic Assembly) Manufacturing
- 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
- 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
- 334519 Other Measuring and Controlling Device Manufacturing
- 513210 Software Publishers
Open contracts in Masterclock, Inc.'s NAICS codes
166 open federal opportunities on SAM.gov use one of Masterclock, Inc.'s NAICS codes and may be open to it: no set-aside, or, in the codes it is registered small under, a small business set-aside. Here are a few, those in its primary code first (none of these are in Missouri right now), then the soonest due.
- MPU5 Radios
Due in 3 daysNov 10, 2026, 9:00 AM MST
- RFQ - AFRL/RFY Video Surveillance System
Due in 5 daysNov 12, 2026, 12:00 PM EST
- Antenna, in Repair/Modification of
✦ NAVSUP Weapon Systems Support (Navy) wants one antenna repaired and returned ready for use (NSN 5985 015855465, part number 562R163H01, QTY 1, unit not stated).
Due in 9 daysNov 16, 2026, 4:30 PM UTC-4
- Antenna, in Repair/Modification of
✦ NAVSUP Weapon Systems Support (Mechanicsburg) wants a vendor to repair an aircraft antenna (CAGE 03956, ref. 1978835) under Emergency Acquisition Flexibilities.
Due in 11 daysNov 18, 2026, 4:30 PM UTC-4
- UPDATED ALS SHB pulsed RF HPA
✦ This is an updated request for proposal from Lawrence Berkeley National Laboratory (run by the University of California for the Department of Energy) for two custom 25 kilowatt…
Due in 11 daysNov 18, 2026, 3:00 PM PSTThe AI summary flags this date. Check SAM.gov.
Similar small businesses
Other small businesses of a similar size with the same primary NAICS code (334220) that have won federal contracts in Missouri and nearby states:
- Conference Technologies, Inc., Maryland Heights, MO
- Cambium Networks Inc, Hoffman Estates, IL
- LVI America Inc, Riverwoods, IL
- Fox Partners LLC, Sadieville, KY
- Kintronic Laboratories Inc, Bluff City, TN
- Plum Laboratories, Inc., Springfield, TN
Is this your business? Get a reminder before the SAM.gov registration expires
Get a reminder before the SAM.gov registration expires. It's active through Sep 3, 2027. We'll email you 60, 30 and 7 days ahead, and if it lapses.
Frequently asked questions
What is Masterclock, Inc.'s CAGE code?
Masterclock, Inc.'s CAGE code is 1GZF9. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is Masterclock, Inc.'s UEI?
Masterclock, Inc.'s Unique Entity ID (UEI) is SXT8K5HELZE8. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is Masterclock, Inc.'s SAM.gov registration active?
Yes, as of SAM.gov's public data from Nov 1, 2026, Masterclock, Inc.'s registration is active through Sep 3, 2027. Registrations are renewed every year.
Is Masterclock, Inc. a small business?
Masterclock, Inc. is registered on SAM.gov as small under 6 NAICS codes, including its primary code, 334220. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
- Check a SAM.gov registration's status
- How to become a government subcontractor
- Hiring subcontractors? List small businesses by state, NAICS code and certification
Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To report a mistake on this page, or to ask us to remove it, email hello@fedready.us with the page address; we reply within 2 business days. For a removal, write from an address at the company.