Walter Klein
NY Doing business as Alpha Sum Business Machines
- UEI
- NNVNBNQJJBR5
- CAGE
- 1FUN5
- Primary NAICS
- 334111 Electronic Computer Manufacturing
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Sole Proprietorship
- Other NAICS codes in SAM.gov
-
- 322291 Sanitary Paper Product Manufacturing
- 325992 Photographic Film, Paper, Plate, Chemical, and Copy Toner Manufacturing
- 333310 Commercial and Service Industry Machinery Manufacturing
- 334112 Computer Storage Device Manufacturing
- 334118 Computer Terminal and Other Computer Peripheral Equipment Manufacturing
- 334210 Telephone Apparatus Manufacturing
- 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
- 334290 Other Communications Equipment Manufacturing
Show all 36
- 334310 Audio and Video Equipment Manufacturing
- 334413 Semiconductor and Related Device Manufacturing
- 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
- 335220 Major Household Appliance Manufacturing
- 335311 Power, Distribution, and Specialty Transformer Manufacturing
- 335313 Switchgear and Switchboard Apparatus Manufacturing
- 335921 Fiber Optic Cable Manufacturing
- 335929 Other Communication and Energy Wire Manufacturing
- 335931 Current-Carrying Wiring Device Manufacturing
- 335932 Noncurrent-Carrying Wiring Device Manufacturing
- 339940 Office Supplies (except Paper) Manufacturing
- 423210 Furniture Merchant Wholesalers
- 423410 Photographic Equipment and Supplies Merchant Wholesalers
- 423420 Office Equipment Merchant Wholesalers
- 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers
- 423440 Other Commercial Equipment Merchant Wholesalers
- 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
- 423620 Household Appliances, Electric Housewares, and Consumer Electronics Merchant Wholesalers
- 423690 Other Electronic Parts and Equipment Merchant Wholesalers
- 423830 Industrial Machinery and Equipment Merchant Wholesalers
- 424120 Stationery and Office Supplies Merchant Wholesalers
- 424130 Industrial and Personal Service Paper Merchant Wholesalers
- 517121 Telecommunications Resellers
- 532420 Office Machinery and Equipment Rental and Leasing
- 541512 Computer Systems Design Services
- 541519 Other Computer Related Services
- 541990 All Other Professional, Scientific, and Technical Services
- 811210 Electronic and Precision Equipment Repair and Maintenance
- SAM.gov registration date
- Physical address
- 33-27 91st St #6B, Jackson Heights, NY 11372, USA
- Website
- alphasum.com
- Founded
- 1983
- Employees
- 1-10
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Information Technology
- Technology Hardware & Equipment
- Technology Hardware, Storage & Peripherals
- Computer Hardware
- SIC code
- 35 Industrial Machinery & Equipment
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | -$195 |
| FY2026 | $66,147 |
| FY2025 | $411,824 |
| FY2024 | $285,307 |
| FY2023 | $805,243 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Commerce | $88,881 | |
| 2 | Department of Justice | $47,666 | |
| 3 | General Services Administration | $13,557 |
Contract vehicles
Expired vehicles (1)
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| S.o.m.a. | Manhasset, NY | 424120 Stationery and Office Supplies Merchant Wholesalers |
| Function5 Technology Group LTD | Rochester, NY | 334112 Computer Storage Device Manufacturing |
| Discover Group Inc. | NY | 423690 Other Electronic Parts and Equipment Merchant Wholesalers |
| Creative Rewards Inc. | NY | 423420 Office Equipment Merchant Wholesalers |
| Office Biz | Los Angeles, CA | 339940 Office Supplies (except Paper) Manufacturing |
About the company
Walter Klein, doing business as Alpha Sum Business Machines, a sole proprietorship based in Jackson Heights, New York, supplies standardized commercial office equipment, IT hardware, and workplace supplies to federal agencies exclusively as a prime contractor through the GSA Multiple Award Schedule (MAS) and related federal supply schedules, competing on a full-and-open basis with no SBA set-aside designations across its footprint.
Alpha Sum Business Machines operates a high-volume, low-unit-value transactional business focused on delivery orders for gel mouse pads with wrist rests, step stools, rolling storage cabinets, monitor privacy screens, KVM switches, hard drives, network printer cartridges, keyboards, office furniture, and miscellaneous IT peripherals. Recent representative awards span the federal government: a $47,333.52 delivery order from the National Oceanic and Atmospheric Administration (August 2026) for CCTV cameras for NOAA Ship Bell M. Shimada under a Total Small Business set-aside on the GSA MAS; a $84,268.80 delivery order from the Naval Sea Systems Command (July 2025) for AC power supply equipment under the GSA MAS; a $46,458.64 Total Small Business set-aside delivery order from the Bureau of Naval Personnel (September 2025) for conference room equipment under the GSA MAS; and a $41,547.54 delivery order from the Bureau of Industry and Security (September 2026) for hard drive purchases supporting the National Center for Foreign Language. The vast majority of awards are sub-$25,000 delivery orders placed under open competition on the GSA MAS and related federal supply schedules.
Customer concentration is broad by agency count but heavily weighted toward a single contracting vehicle. The top five funding agencies by award count represent 34% of awards: the GSA Federal Acquisition Service leads with 662 awards worth $21 million in combined potential value, followed by the Department of the Army (400 awards, $1.8 million), the Army Materiel Command TACOM Life Cycle Management Command (290 awards, $226 thousand), the United States Marine Corps (235 awards, $2.3 million), and the Navy Naval Sea Systems Command (170 awards, $1.3 million). The vendor has served 444 distinct federal agencies, indicating broad reach but shallow engagement with each. The GSA Federal Acquisition Service dominates both volume and dollars — accounting for approximately one-third of all awards and about one-third of total potential value.
Alpha Sum Business Machines sits on five parent vehicles, all GSA or federal supply schedules. The Office Products, Supplies Services and Technology schedule anchors the portfolio with 2,792 task orders worth $13.9 million in combined potential value. The GSA Multiple Award Schedule (MAS) generated 951 task orders worth $4.2 million. Federal Supply Schedule GS03F0054U placed 358 task orders worth $3 million, Federal Supply Schedule GS35F0177S placed 339 task orders worth $5.6 million, and an Indefinite Delivery Contract (HEVAS609A0005) generated 14 task orders worth $1.3 million. No other parent vehicles appear in the top five.
Activity has accelerated sharply in the past two years. The vendor earned 75 awards in 2022, 79 in 2023, then jumped to 390 in 2024 before declining to 116 in 2025 and 8 in the current year (through late September 2026). The combined potential value across all 5,243 awards in the source data is $62 million, with $38.4 million (62%) obligated to date. The recompete cliff in the next twenty-four months carries only $89 thousand in combined potential value — a negligible exposure reflecting the transactional, on-demand nature of GSA supply-schedule work.
The vendor's category concentration confirms its role as a commodity supplier. The top NAICS are Blank Magnetic and Optical Recording Media Manufacturing (2,752 awards), Stationery Product Manufacturing (600 awards), Radio, Television, and Other Electronics Stores (372 awards), and Computer Storage Device Manufacturing (371 awards). The primary PSC codes track office and IT supplies: Information Technology Supplies (1,585 awards), Office Supplies (869 awards), and Information Technology Support Equipment (387 awards). Alpha Sum Business Machines has no subcontract footprint; all 5,243 awards are prime orders. The vendor operates as a pure pass-through distributor on the GSA MAS, sourcing commercial off-the-shelf products and delivering them within days of order to federal agencies across the government.
SBA capabilities narrative
Sales, service, supply and support of office automation equipment and systems covering the full range of over 200,000 products.
Quick answers
Is Walter Klein registered in SAM.gov?
Yes. Walter Klein's SAM.gov registration is active through September 3, 2027.
Which contract vehicles does Walter Klein hold?
Walter Klein holds a place on 3 federal contract vehicles, including IT-70 and MAS.
How much has Walter Klein received in federal contracts?
Federal contracts obligated $411,824 to Walter Klein in fiscal year 2025 and $1,568,327 in fiscal years 2023 through 2027.
How does Walter Klein rank among federal contractors?
Walter Klein ranked #12 in NAICS 32223, #23 in PSC 6060 and #40 in PSC 7730 in FY2025.
What is Walter Klein's most recent federal award?
Walter Klein's most recent federal contract award is Boardwalk BWK454W35 (47QSWA26F23RC), from Federal Acquisition Service, on September 30, 2026.
On GovTribe
See Walter Klein's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors