Federal contractor profile
NIKKAI CORPORATION
UEI MENXWTPNH9N5CAGE JS983
Active
Overview
- Legal name
- NIKKAI CORPORATION
- Registered location
- YOKOSUKA, JPN
- Primary NAICS
- 236210 — Industrial Building Construction
- Latest award activity
- Jun 2, 2026
Read company summary
NIKKAI CORPORATION is associated with UEI MENXWTPNH9N5 and CAGE JS983 in public federal records. AcornBids currently links 28 prime awards totaling $43.5M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Defense. Its recorded federal awards include work classified as Commercial and Institutional Building Construction; Appliance Repair and Maintenance; Facilities Support Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 236210 (Industrial Building Construction). Its public SAM.gov registration lists YOKOSUKA, JPN.
At a glance
Lifetime prime obligations$43.5M
Prime awards28
Awards with future end dates10
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- NIKKAI CORPORATION
- UEI
- MENXWTPNH9N5
- CAGE
- JS983
- Registered address
- 2-4-5, YONEGAHAMADOORI NIKKAI BLDG., YOKOSUKA, 238-0011, JPN
- Registration status
- Active
- Primary NAICS
- 236210 — Industrial Building Construction
- SAM activation
- May 21, 2026
- Initial registration
- Jun 1, 2006
- Entity start
- Jan 27, 1984
- SAM updated
- May 21, 2026
- Registration expires
- May 21, 2027
- Fiscal year end
- Jul 31
- Place of incorporation
- JPN
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| N6264926PB074REPAIR EXISTING SHAFT LATHE, X31 FOR SRF-JRMC | Department of Defense | $61.2K | Jun 15, 2026 | Sep 30, 2026 |
| N4008424F4346YSK-PW-SA-COMM, REPLACE MAIN WATER PIPE NEAR MAIN GATE | Department of Defense | $4.5M | Apr 29, 2024 | Jul 31, 2026 |
| N4008426P0807CONDUCT ULTRASONIC TESTING FOR LAND CRANE (LC47 AND LC48) RAILS AT BERTH 12 IN THE U.S. COMMANDER FLEET ACTIVITIES, YOKOSUKA, JAPAN | Department of Defense | $13.3K | Jun 1, 2026 | Aug 15, 2026 |
| N4008426F4277YSK-3336 REPLACE CORRODED COVERED WALKWAY AT THE COMMANDER FLEET ACTIVITIES YOKOSUKA, JAPAN | Department of Defense | $244.3K | May 15, 2026 | Dec 31, 2026 |
| N4008426F4235YSK-DD6 REPLACE 200A COMPRESSED AIR LINE AT THE U.S. FLEET ACTIVITIES YOKOSUKA, JAPAN | Department of Defense | $1.2M | Apr 20, 2026 | Apr 10, 2028 |
| N4008426F4175YSK-1938 OVERHAUL AIR-COMPRESSOR UNITS 2 AND 3 AND REWIND MOTOR | Department of Defense | $1.0M | Mar 13, 2026 | May 7, 2027 |
| N4008426F4161OVERHAUL AND REPLACE PARTS OF THE CHILLER UNIT AT YSK-A47, EPRO.NO. 1923406 | Department of Defense | $483.8K | Mar 4, 2026 | Feb 22, 2028 |
| N4008425D0412MAINTENANCE AND REPAIRS FOR THE PUMP TEST BENCH SYSTEMS AT U.S. COMMANDER FLEET ACTIVITIES YOKOSUKA (CFAY), JAPAN BY COMBINATION CONTRACT OF RECURRING WORK AND NON-RECURRING WORK… | Department of Defense | $500.0K | Aug 1, 2025 | Not available |
| N4008423D0081INDEFINITE DELIVERY/INDEFINITE QUANTITY (IDIQ) DESIGN-BUILD (DB)/DESIGN-BID-BUILD (DBB) MULTIPLE AWARD CONSTRUCTION CONTRACT (MACC) FOR THE KANTO OPERATIONAL AREA, JAPAN. (BASE… | Department of Defense | $250.0M | Jun 30, 2023 | Not available |
| N4008425D0005KANTO PLAINS MINI MACC | Department of Defense | $49.0M | Mar 4, 2025 | Not available |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | May 21, 2026 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Jun 1, 2006 |
| Entity start | Jan 27, 1984 |
| Industry | Reported size status |
|---|---|
| 236210 — Industrial Building Construction | Not reported |
| 236220 — Commercial and Institutional Building Construction | Not reported |
| 237990 — Other Heavy and Civil Engineering Construction | Not reported |
| 238110 — Poured Concrete Foundation and Structure Contractors | Not reported |
| 238160 — Roofing Contractors | Not reported |
| 238210 — Electrical Contractors and Other Wiring Installation Contractors | Not reported |
| 238220 — Plumbing, Heating, and Air-Conditioning Contractors | Not reported |
| 238290 — Other Building Equipment Contractors | Not reported |
| 238330 — Flooring Contractors | Not reported |
| 333415 — Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing | Not reported |
| 541380 — Testing Laboratories and Services | Not reported |
| 561210 — Facilities Support Services | Not reported |
| 561730 — Landscaping Services | Not reported |
| 561790 — Other Services to Buildings and Dwellings | Not reported |
| 811310 — Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| KOSUKE SAKAMOTO | Government business | Contact method not published | SAM registration | Not available |
| MIKI SAKAMOTO | Alternate government business | Contact method not published | SAM registration | Not available |
| KOSUKE SAKAMOTO | Electronic business | Contact method not published | SAM registration | Not available |
| MIKI SAKAMOTO | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 236210 — Industrial Building Construction
- 236220 — Commercial and Institutional Building Construction
- 237990 — Other Heavy and Civil Engineering Construction
- 238110 — Poured Concrete Foundation and Structure Contractors
- 238160 — Roofing Contractors
- 238210 — Electrical Contractors and Other Wiring Installation Contractors
- 238220 — Plumbing, Heating, and Air-Conditioning Contractors
- 238290 — Other Building Equipment Contractors
- 238330 — Flooring Contractors
- 333415 — Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
- 541380 — Testing Laboratories and Services
- 561210 — Facilities Support Services
- 561730 — Landscaping Services
- 561790 — Other Services to Buildings and Dwellings
- 811310 — Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About NIKKAI CORPORATION
What products and services appear in its federal awards?
Recorded award industries: 236220 — Commercial and Institutional Building Construction; 811412 — Appliance Repair and Maintenance; 561210 — Facilities Support Services.
Recorded products and services: Z2NZ — REPAIR OR ALTERATION OF OTHER UTILITIES; Z2FC — REPAIR OR ALTERATION OF TROOP HOUSING FACILITIES; Z2JZ — REPAIR OR ALTERATION OF MISCELLANEOUS BUILDINGS.
Examples from recent award records:
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
2-4-5, YONEGAHAMADOORI NIKKAI BLDG., YOKOSUKA 238-0011, JPN
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
236210 — Industrial Building Construction.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Defense.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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