S3 AERODEFENSE LLC
CAGE 4GPC1 UEI NHNBSS7VKTD7 MILWAUKEE, WI SAM active until 2027-07-14 s3aerodefense.com ↗
S3 AERODEFENSE LLC (CAGE 4GPC1) appears as the awardee on 43 indexed government parts awards across 16 federal supply classes, most recently in Nov 2026.
About
S3 AeroDefense LLC is a Milwaukee, Wisconsin-based provider of military aircraft spares, component repair services, and custom engineering and technical solutions for military aviation operators. The company states it is an authorized stocking distributor for several aerospace OEMs and an FAA and EASA-approved repair facility. Its site describes operations in over 55 countries and a 73,000-square-foot facility. It lists ISO 9001:2015, AS9110C, AS9120 2016, UK CAA, FAA, EASA and CAGE code registrations. The company traces its origins to 2005 as S3 International.
Products
- Military aircraft spares
- OEM aerospace parts
- Aircraft components
Capabilities
- Component repair services
- Aircraft upgrades and modifications
- Performance based logistics
- Custom engineering solutions
- Technical solutions
- Parts distribution
Certifications named on its site
- ISO 9001:2015
- AS9110C
- AS9120 2016
- UK CAA UK.145.50699
- FAA #9S3R896B
- EASA #145.6559
- CAGE CODE 4GPC1
Founded 2005, according to its website.
Summary of s3aerodefense.com pages read October 13, 2026, written automatically; check the company's site for details. Pages read: Aerospace Spares, Repairs & Solutions | S3 Aero…, Contact S3 AeroDefense | Military Aviation Supp…, About S3 AeroDefense – OEM Authorized Distribut…, Aerospace Support Services & Solutions | S3 Aer….
Contact
- Address
- 2101 W CAMDEN RD
MILWAUKEE, WI 53209-3707 - Points of contact in SAM.gov
-
- KELLY CIEZKI, SALES MANAGER, US GOV Government Business POC
- JEFF WNUK Past Performance POC
- JEFF WNUK, SR VP OPERATIONS Electronic Business POC
- Email, from its website
- sales@s3aerodefense.com from s3aerodefense.com
Address and points of contact are the public record in SAM.gov, last updated July 16, 2026 (find it on SAM.gov). Phone and email are as the company publishes them on its own website.
Registration
- SAM.gov status
- Active
- Registered
- May 11, 2026
- Expires
- Jul 14, 2027
- Last updated
- Jul 16, 2026
- Business started
- Jul 5, 2005
- Structure
- Partnership or Limited Liability Partnership
- State of incorporation
- WI
- Business types
- For Profit Organization
- Limited Liability Company
| NAICS | Primary | Size standard |
|---|---|---|
| 332510 | Not small | |
| 332991 | Not small | |
| 334419 | Not small | |
| 336411 | Not small | |
| 336412 | Not small | |
| 336413 | Not small | |
| 423860 | Primary | — |
| 488190 | — | |
| 493110 | — | |
| 493190 | — | |
| 541330 | — | |
| 811310 | — |
Source: SAM.gov public entity data (SAM_PUBLIC_MONTHLY_V2_20261013.ZIP) · SAM.gov record ↗
Performance
Last 12 months against the 12 before
| Period | Awards | Award dollars |
|---|---|---|
| Last 12 months | 43 | $2,541,130 |
| Prior 12 months | 0 | — |
Award dollars in the last 12 months compare with none recorded in the 12 months before.
Rank among suppliers
- Award dollars, last 12 months#125
- Award dollars, all time#125
- Awards won, last 12 months#223
- Awards won, all time#223
- Distinct NSNs#205
- Distinct supply classes#168
- Rising (12 months vs prior 12 months)#125
Awards by month
How much has this supplier been awarded each month? Last 24 months.
Months by award date. Dollars add each award's recorded total, or unit price times quantity.
Top parts
The NSNs this supplier appears on most often in the indexed awards.
| NSN | Item | Awards | Award dollars | Latest award |
|---|---|---|---|---|
| 4720-00-555-1845 | HOSE ASSEMBLY,AIR DUCT | 2 | $30,554 | Oct 16, 2026 |
| 1660-01-500-4366 | INSULATION BLANKET,THERMAL,AIRCR | 1 | $10,895 | Nov 4, 2026 |
| 1680-01-040-8494 | ELEMENT,SENSING | 1 | $12,064 | Nov 4, 2026 |
| 5365-00-543-4470 | BUSHING,NONMETALLIC | 1 | $22,936 | Nov 4, 2026 |
| 6220-01-653-4077 | HOUSING,LIGHT | 1 | $204,568 | Nov 4, 2026 |
| 5999-01-348-1184 | SHIELDING GASKET,ELECTRONIC | 1 | $10,745 | Oct 28, 2026 |
| 4820-01-542-6891 | PARTS KIT,VALVE | 1 | $349,900 | Oct 27, 2026 |
| 5330-00-171-9934 | GASKET | 1 | $3,630 | Oct 22, 2026 |
| 5330-01-088-6878 | GASKET | 1 | $1,020 | Oct 22, 2026 |
| 1680-00-962-8795 | FITTING,SAFETY | 1 | $7,322 | Oct 21, 2026 |
Supply classes
Federal supply classes of the NSNs in this supplier's indexed awards, with the number of awards in each.
| Class | Name | Awards |
|---|---|---|
| FSC 6220 | Electric Vehicular Lights and Fixtures | 9 |
| FSC 5330 | Packing and Gasket Materials | 5 |
| FSC 1680 | Miscellaneous Aircraft Accessories and Components | 4 |
| FSC 4720 | Hose and Flexible Tubing | 4 |
| FSC 5999 | Miscellaneous Electrical and Electronic Components | 4 |
| FSC 6340 | Aircraft Alarm and Signal Systems | 3 |
| FSC 1560 | Airframe Structural Components | 2 |
| FSC 1660 | Aircraft Air Conditioning, Heating, and Pressurizing Equipment | 2 |
| FSC 4820 | Valves, Nonpowered | 2 |
| FSC 5305 | Screws | 2 |
| FSC 2920 | Engine Electrical System Components, Nonaircraft | 1 |
| FSC 5325 | Fastening Devices | 1 |
| FSC 5365 | Bushings, Rings, Shims, and Spacers | 1 |
| FSC 5930 | Switches | 1 |
| FSC 5935 | Connectors, Electrical | 1 |
| FSC 5945 | Relays and Solenoids | 1 |
Open bids for parts they make
3 part numbers are listed for CAGE 4GPC1 in the federal catalog (FLIS). None of those NSNs has an open solicitation today.
Parts listed for this supplier (3)
| NSN | Item | Part number |
|---|---|---|
| 2995-01-210-8543 | HOUSING | 3167338-6 |
| 6220-00-617-1294 | LIGHT,NAVIGATIONAL,AIRCRAFT | A2138R7512 |
| 6230-00-939-8606 | LANTERN,ELECTRIC | 10-0055-3 |
All awards
| NSN | Awarded | Item | Qty | Unit price | Total | Agency | Source |
|---|---|---|---|---|---|---|---|
| 1680-01-040-8494 | Nov 4, 2026 | ELEMENT,SENSING | 4 | $3,016.00 | $12,064 | — | Source ↗ |
| 1660-01-500-4366 | Nov 4, 2026 | INSULATION BLANKET,THERMAL,AIRCR | 2 | $5,447.50 | $10,895 | — | Source ↗ |
| 5365-00-543-4470 | Nov 4, 2026 | BUSHING,NONMETALLIC | 3,545 | $6.47 | $22,936 | — | Source ↗ |
| 6220-01-653-4077 | Nov 4, 2026 | HOUSING,LIGHT | 4 | $51,142.00 | $204,568 | — | Source ↗ |
| 5999-01-348-1184 | Oct 28, 2026 | SHIELDING GASKET,ELECTRONIC | 35 | $307.00 | $10,745 | — | Source ↗ |
| 4820-01-542-6891 | Oct 27, 2026 | PARTS KIT,VALVE | 100 | $3,499.00 | $349,900 | — | Source ↗ |
| 5330-01-088-6878 | Oct 22, 2026 | GASKET | 12 | $85.00 | $1,020 | — | Source ↗ |
| 5330-00-171-9934 | Oct 22, 2026 | GASKET | 66 | $55.00 | $3,630 | — | Source ↗ |
| 1680-00-962-8795 | Oct 21, 2026 | FITTING,SAFETY | 14 | $523.00 | $7,322 | — | Source ↗ |
| 5330-00-675-9265 | Oct 21, 2026 | RUBBER STRIP | 58 | $64.00 | $3,712 | — | Source ↗ |
| 6220-01-469-9556 | Oct 20, 2026 | LENS,LIGHT | 3 | $2,514.00 | $7,542 | — | Source ↗ |
| 5325-01-687-6121 | Oct 19, 2026 | GROMMET,NONMETALLIC | 25 | $14.82 | $370.50 | — | Source ↗ |
| 4720-00-555-1845 | Oct 16, 2026 | HOSE ASSEMBLY,AIR DUCT | 7 | $2,614.00 | $18,298 | — | Source ↗ |
| 1680-01-676-3282 | Oct 8, 2026 | DETECTOR,SPECIAL | 24 | $3,674.00 | $88,176 | — | Source ↗ |
| 6220-01-415-4836 | Oct 7, 2026 | LIGHT,LANDING,AIRCRAFT | 20 | $10,995.00 | $219,900 | — | Source ↗ |
| 6220-01-510-6159 | Oct 1, 2026 | BLOCK,ASSY LIGHT | 5 | $260.00 | $1,300 | — | Source ↗ |
| 6220-01-469-8182 | Sep 28, 2026 | COVER,VEHICULAR LIGHT | 14 | $199.00 | $2,786 | — | Source ↗ |
| 6220-01-694-4036 | Sep 24, 2026 | LENS,LIGHT | 10 | $15,998.00 | $159,980 | — | Source ↗ |
| 1660-01-711-1716 | Sep 24, 2026 | DUCT ASSEMBLY,AIR CONDITIONING-H | 1 | $210,033.00 | $210,033 | — | Source ↗ |
| 2920-01-027-4844 | Sep 23, 2026 | PLATE,RETAINING | 56 | $140.00 | $7,840 | — | Source ↗ |
| 5330-01-469-9546 | Sep 16, 2026 | SEAL,NONMETALLIC SPECIAL SHAPED | 4 | $930.00 | $3,720 | — | Source ↗ |
| 5330-01-041-9672 | Sep 16, 2026 | GASKET | 9 | $69.00 | $621.00 | — | Source ↗ |
| 6340-01-435-0753 | Sep 15, 2026 | SENSING ELEMENT,FIRE DETECTOR SY | 11 | $7,548.00 | $83,028 | — | Source ↗ |
| 6220-00-772-6790 | Sep 14, 2026 | GASKET,LANDING LAMP | 3 | $220.00 | $660.00 | — | Source ↗ |
| 5305-01-731-6525 | Sep 10, 2026 | SCREW,MACHINE | 7 | $121.00 | $847.00 | — | Source ↗ |
| 6220-00-780-2326 | Sep 10, 2026 | LENS,LIGHT | 72 | $272.00 | $19,584 | — | Source ↗ |
| 1560-00-702-1043 | Sep 9, 2026 | DUCT,MANIFOLD,AIR BLEED | 20 | $13,329.00 | $266,580 | — | Source ↗ |
| 5305-00-099-8365 | Sep 9, 2026 | SCREW,MACHINE | 4 | $97.00 | $388.00 | — | Source ↗ |
| 5945-01-026-9953 | Sep 2, 2026 | SOLENOID,ELECTRICAL | 8 | $1,823.00 | $14,584 | — | Source ↗ |
| 5999-00-413-4702 | Sep 1, 2026 | MAGNET,PERMANENT | 1 | $1,085.00 | $1,085 | — | Source ↗ |
| 5935-01-144-4558 | Sep 1, 2026 | CONNECTOR,PLUG,ELECTRICAL | 131 | $2,671.7557 | $350,000 | — | Source ↗ |
| 5930-01-259-3378 | Sep 1, 2026 | ADAPTER,SWITCH ACTUATOR | 14 | $71.00 | $994.00 | — | Source ↗ |
| 6340-01-471-2595 | Sep 1, 2026 | SENSING ELEMENT,FIRE DETECTOR SY | 17 | $5,819.00 | $98,923 | — | Source ↗ |
| 5999-01-064-4376 | Sep 1, 2026 | CONTACT ASSEMBLY,ELECTRICAL | 51 | $948.00 | $48,348 | — | Source ↗ |
| 6340-01-434-8886 | Aug 27, 2026 | SENSING ELEMENT,FIRE DETECTOR SY | 1 | $7,193.00 | $7,193 | — | Source ↗ |
| 5999-01-483-3142 | Aug 26, 2026 | CONTACT,ELECTRICAL | 18 | $353.00 | $6,354 | — | Source ↗ |
| 1560-00-726-3428 | Aug 20, 2026 | DUCT,ENGINE BLEED AIR | 16 | $13,537.00 | $216,592 | — | Source ↗ |
| 1680-01-610-6968 | Aug 20, 2026 | NRP,LENS ASSEMBLY C | 5 | $1,198.00 | $5,990 | — | Source ↗ |
| 4720-01-436-0058 | Aug 19, 2026 | HOSE,AIR DUCT | 3 | $8,498.00 | $25,494 | — | Source ↗ |
| 4820-01-104-9226 | Aug 19, 2026 | VALVE,BUTTERFLY | 1 | $11,988.00 | $11,988 | — | Source ↗ |
| 4720-01-387-7260 | Aug 18, 2026 | HOSE,AIR DUCT | 25 | $877.00 | $21,925 | — | Source ↗ |
| 4720-00-555-1845 | Aug 13, 2026 | HOSE ASSEMBLY,AIR DUCT | 4 | $3,064.00 | $12,256 | — | Source ↗ |
| 6220-01-566-6713 | Aug 11, 2026 | RETAINER,LENS | 2 | $479.00 | $958.00 | — | Source ↗ |
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About this data
- Awards come from DLA DIBBS award records and other indexed award records; each row links to its source.
- The supplier's name and location come from the public CAGE file in DLA's PUB LOG.
- Registration, address and points of contact come from SAM.gov public entity data. Phone, email and the website summary come from the company's own website, read by NSNExplorerBot (how it behaves).
- This list covers the awards NSN Explorer has indexed, not everything this supplier has won.
- Award dollars add each award's recorded total, or unit price times quantity when no total is recorded; awards with neither are not counted.
- Data last refreshed: 2026-11-05.
- Totals and ranks as of Nov 6, 2026.
- Full methodology →
Cite this page
NSN Explorer. "S3 AERODEFENSE LLC." nsnexplorer.com, https://nsnexplorer.com/supplier/4GPC1/. Data as of November 7, 2026.
https://nsnexplorer.com/supplier/4GPC1/