PSC 7B21: IT and Telecom – Compute: Mainframe (Hardware and Perpetual License Software)
7B21 is the product and service code (PSC) federal agencies use for it and telecom – compute: mainframe (hardware and perpetual license software), in the it and telecom – compute group. Here are the contracts open under it now, the NAICS codes it pairs with, and who buys and wins this work.
- Open contracts now
- 1
- Spending, FY2025
- $458.6 million
- Share to small businesses, since FY2024
- 75%
Open count as of Oct 12, 2026, 2:12 PM ET.
Open PSC 7B21 contracts with 2+ days to respond
- IBM Mainframes and Maintenance for the FDIC
✦ The Federal Deposit Insurance Corporation (FDIC) wants to buy two new IBM z17 mainframes plus five years of IBM hardware maintenance, because its current equipment has reached…
Due in 8 daysOct 20, 2026
Where 7B21 sits in the PSC Manual
- Category: Product
- Group 7B: IT and Telecom – Compute
- Code 7B21: IT and Telecom – Compute: Mainframe (Hardware and Perpetual License Software)
NAICS codes used with PSC 7B21
The NAICS code on a contract sets the size standard for who counts as small. These are the codes agencies pair with 7B21 most often:
| NAICS | Industry | Spent, last 3 years | Open notices |
|---|---|---|---|
| 541519 | Other Computer Related Services | $876.1 million | 1 |
| 334111 | Electronic Computer Manufacturing | $276.4 million | — |
| 541512 | Computer Systems Design Services | $77.5 million | — |
| 541618 | Other Management Consulting Services | $52.8 million | — |
| 511210 | Software Publishers (old code; now 513210) | $48.6 million | — |
| 334112 | Computer Storage Device Manufacturing | $45 million | — |
Who buys under PSC 7B21
Agencies with the most contract dollars under 7B21 over the last three fiscal years, per USAspending.gov:
| Agency | Obligated |
|---|---|
| Internal Revenue Service | $681.5 million |
| Department of the Air Force | $219.9 million |
| Department of the Army | $78.1 million |
| U.S. Special Operations Command | $43.2 million |
| Social Security Administration | $42.4 million |
| Bureau of the Fiscal Service | $41 million |
| Department of the Navy | $40.4 million |
| Office of the Assistant Secretary for Financial Resources | $28.6 million |
Federal spending under PSC 7B21 by year
| Fiscal year | Contract obligations |
|---|---|
| FY2024 | $556.1 million |
| FY2025 | $458.6 million |
| FY2026 (incomplete) | $447.3 million |
Headline figures use FY2025, the last complete year. FY2026 is still incomplete and will rise until about early January 2027 as Defense data arrives: USAspending.gov publishes Defense contracts 90 days after they're signed.
Who wins PSC 7B21 contracts
| Company | Obligated, last 3 years |
|---|---|
| Four LLC | $208.5 million |
| FCN, Inc. | $160.1 million |
| MCP Computer Products Inc | $61.9 million |
| Science Applications International Corporation | $59.7 million |
| Palantir USG Inc | $52.8 million |
| Dell Federal Systems L.P | $49.4 million |
| Affigent, LLC | $44.3 million |
| Carahsoft Technology Corp | $40.8 million |
| Thundercat Technology, LLC | $38.8 million |
| Greenbrier Government Solutions Inc | $37.3 million |
Linked names have a FedReady profile, which shows the NAICS codes a business is registered as small under. Most large companies have none.
Related PSC codes
- 7B20 IT and Telecom – High Performance Compute (Hardware and Perpetual License Software)
- 7B22 IT and Telecom – Compute: Servers (Hardware and Perpetual License Software)
Frequently asked questions
What is PSC 7B21?
7B21 is the product code in the federal Product and Service Code (PSC) Manual for it and telecom – compute: mainframe (hardware and perpetual license software), under 7B (IT and Telecom – Compute). Agencies put a PSC on every contract to record what they bought.
What is the difference between a PSC and a NAICS code?
A PSC describes what the government is buying. A NAICS code describes the industry of the business doing the work, and it sets the SBA size standard for small business set-asides. Every contract notice has both.
Which NAICS code goes with PSC 7B21?
Most federal contract dollars under PSC 7B21 go with NAICS 541519 (Other Computer Related Services), according to USAspending.gov. The contracting officer picks the NAICS code for each solicitation, so check the notice.
How do I find contracts that use PSC 7B21?
Contract opportunities are posted on SAM.gov with their PSC and NAICS codes. 1 open notices use PSC 7B21 right now. FedReady can match new ones to your business and email you, free.