Top 100 Contractors in NAICS 4237: Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers, FY2021

Name: Top 100 Contractors in NAICS 4237: Hardware, and Plumbing and Heating Equipment and Supplies Merchant Wholesalers, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 81% of FY2021 NAICS 4237 contract dollars

Contract obligations: $56,220,420 Net of deobligations, by contracts coded NAICS 4237 or a code under it
Contractors: 229 Parent companies with an obligation
Largest contractor: Federal Resources Supply Company $43.2 million, 75.3% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Federal Resources Supply Company Through Wright Tool Company, LLC Top agencies GSA (General Services Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$43,189,607	75.3%	Rank history: #1 in FY2022, #1 in FY2023, #2 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	Document Imaging Dimensions Inc. Top agencies GSA (General Services Administration) USAF (Department of the Air Force) HHS (Department of Health and Human Services)	$1,080,396	1.9%	Rank history: #9 in FY2022 and not on the FY2023–FY2025 lists; up 1 since FY2020.
3	Mensch Mill & Lumber Corp Top agencies GSA (General Services Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$385,045	0.7%	Rank history: #2 in FY2022, #5 in FY2023, #82 in FY2024 and not on the FY2025 list; up 5 since FY2020.
4	F & M Micro Products Inc. Top agencies GSA (General Services Administration)	$366,370	0.6%	Rank history: #72 in FY2022, #43 in FY2023, #11 in FY2024 and #4 in FY2025; up 54 since FY2020.
5	Divine Imaging Inc. Top agencies Navy (Department of the Navy) DOJ (Department of Justice) USAF (Department of the Air Force)	$358,955	0.6%	Rank history: #8 in FY2022, #20 in FY2023, #59 in FY2024 and not on the FY2025 list; up 6 since FY2020.
6	Lockmasters Inc. Top agencies DOJ (Department of Justice)	$303,420	0.5%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
7	Prime Veritas General Trading & Contracting Top agencies USAF (Department of the Air Force)	$280,777	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
8	Winnebago Tribe of Nebraska Through All Native, Inc. Top agencies DOS (Department of State)	$244,266	0.4%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
9	Supplyforce.com, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) DHS (Department of Homeland Security)	$236,717	0.4%	Rank history: #10 in FY2022, #3 in FY2023, #5 in FY2024 and #14 in FY2025; up 3 since FY2020.
10	Global Networks Inc. Top agencies USAID (US Agency for International Development)	$224,594	0.4%	Rank history: not on the FY2022–FY2025 lists; up 28 since FY2020.
11	Windward Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$222,400	0.4%	Rank history: #6 in FY2022, #4 in FY2023, #4 in FY2024 and #2 in FY2025; down 7 since FY2020.
12	Comfort & Process Solutions, LLC Top agencies DOJ (Department of Justice)	$221,435	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
13	Snap-On Incorporated Through Idsc Holdings LLC Top agencies USAF (Department of the Air Force)	$212,227	0.4%	Rank history: #4 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
14	Investment AB Latour Through Swegon Operations S.R.L. Top agencies USAF (Department of the Air Force)	$210,954	0.4%	Rank history: #24 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
15	Neotech Engineered Products, Inc. Top agencies DHS (Department of Homeland Security)	$200,850	0.4%	Rank history: #29 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
16	Midwest Mechanical Solutions, LLC Top agencies USAF (Department of the Air Force)	$196,666	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
17	TWC Logistics, LLC Top agencies DHS (Department of Homeland Security)	$175,644	0.3%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
18	RNK International, Inc. Top agencies USAF (Department of the Air Force)	$171,396	0.3%	Rank history: not on the FY2022–FY2024 lists and #39 in FY2025; up 105 since FY2020.
19	Airfixture LLC Top agencies DOS (Department of State)	$164,550	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	CBX Holding, LLC Through Cold Box Express, Inc. Top agencies DHS (Department of Homeland Security)	$161,100	0.3%	Rank history: #17 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
21	Carrier Africa FZE Top agencies USAID (US Agency for International Development)	$155,000	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
22	Kipper Tool Company Top agencies DOJ (Department of Justice)	$154,907	0.3%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
23	Wright Tool Company, LLC Top agencies GSA (General Services Administration) Navy (Department of the Navy)	$144,180	0.3%	Rank history: #7 in FY2022 and not on the FY2023–FY2025 lists; down 21 since FY2020.
24	Koch Enterprises Inc. Through Koch Air LLC Top agencies DOJ (Department of Justice)	$143,551	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Willar Corporation Top agencies DHS (Department of Homeland Security)	$134,292	0.2%	Rank history: not on the FY2022–FY2025 lists; up 5 since FY2020.
26	New York Thermal Systems LLC Top agencies DOT (Department of Transportation)	$132,948	0.2%	Rank history: not on the FY2022–FY2025 lists; up 63 since FY2020.
27	Kaman Corp Through Ruby Industrial Technologies, LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$129,183	0.2%	Rank history: not on the FY2022–FY2025 lists; up 192 since FY2020.
28	Way Point Commercial Broker L.l.c Top agencies USAF (Department of the Air Force)	$121,285	0.2%	Rank history: not on the FY2022–FY2025 lists; up 38 since FY2020.
29	Ferguson Enterprises Inc. 2 awardees, including Wolseley Industrial Group Top agencies Smithsonian (Smithsonian Institution) NASA (National Aeronautics and Space Administration)	$118,483	0.2%	Rank history: #38 in FY2022, #49 in FY2023, #45 in FY2024 and not on the FY2025 list; up 20 since FY2020.
30	Perry Mechanical Systems LLC Top agencies DHS (Department of Homeland Security)	$117,822	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
31	International Royal Inc. Top agencies DHS (Department of Homeland Security)	$113,521	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	Afri General Trading Co Ltd Top agencies USAID (US Agency for International Development)	$112,000	0.2%	Rank history: not on the FY2022–FY2023 lists, #95 in FY2024 and #53 in FY2025; new, not ranked in FY2020.
33	Export 220Volt Inc. Top agencies DOS (Department of State)	$110,410	0.2%	Rank history: #22 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2020.
34	W.w. Grainger, Inc. Top agencies Smithsonian (Smithsonian Institution) Army (Department of the Army) HHS (Department of Health and Human Services)	$109,352	0.2%	Rank history: #14 in FY2022, #19 in FY2023, #24 in FY2024 and #5 in FY2025; down 11 since FY2020.
35	Commercial Air, Inc. Top agencies DOJ (Department of Justice)	$107,781	0.2%	Rank history: #30 in FY2022, not on the FY2023 list, #14 in FY2024 and not on the FY2025 list; down 3 since FY2020.
36	Elbit Systems Ltd Through Sparton Aydin, LLC Top agencies DHS (Department of Homeland Security)	$97,646	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Misr Refrigeration and Air Conditioning Manufacturing Company Sae Top agencies USAID (US Agency for International Development)	$95,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
38	Thos. Somerville Co. Top agencies Smithsonian (Smithsonian Institution) DOE (Department of Energy)	$92,653	0.2%	Rank history: #63 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
39	Al Jazy Trading Company Top agencies USAF (Department of the Air Force)	$89,846	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
40	Team Commercial Construction, Inc. Top agencies DHS (Department of Homeland Security)	$88,849	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
41	Cosmos Air Purification & Environmental Systems, Inc. Top agencies Smithsonian (Smithsonian Institution)	$88,504	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
42	BB Government Services GMBH Through Porr Government Services GMBH Top agencies USAF (Department of the Air Force)	$88,158	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
43	Damuth Services Inc. Top agencies NASA (National Aeronautics and Space Administration)	$85,750	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	ASA Environmental Products Inc. Top agencies USAF (Department of the Air Force)	$84,994	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	D 'N A Heating & Air LLC Top agencies DHS (Department of Homeland Security)	$83,539	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
46	Advanced Mechanical & Hvac, LLC Top agencies DOT (Department of Transportation)	$79,012	0.1%	Rank history: not on the FY2022–FY2025 lists; up 125 since FY2020.
47	DLT Solutions LLC Top agencies USAID (US Agency for International Development)	$78,880	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
48	Coleman Mechanical Services, Inc. Top agencies DOJ (Department of Justice)	$74,825	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
49	Case Marine Inc. Top agencies DHS (Department of Homeland Security)	$70,740	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
50	Countertrade Products, Inc. Top agencies USAID (US Agency for International Development)	$69,400	0.1%	Rank history: not on the FY2022–FY2023 lists, #22 in FY2024 and #67 in FY2025; new, not ranked in FY2020.
51	Mclaughlin & Woods Limited Top agencies DOS (Department of State)	$66,662	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
52	SAM Desanto Co Inc. Top agencies OPM (Office of Personnel Management)	$66,652	0.1%	Rank history: not on the FY2022–FY2025 lists; up 85 since FY2020.
53	Evergreen UV LLC Top agencies VA (Department of Veterans Affairs)	$64,112	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	Xerox It Solutions LLC Top agencies DOS (Department of State)	$64,108	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	Koval Building and Plumbing Co Top agencies DOJ (Department of Justice)	$62,561	0.1%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
56	Indoff, LLC Top agencies DOS (Department of State) Navy (Department of the Navy)	$62,229	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Atlantic Valve & Supply Inc. Top agencies DHS (Department of Homeland Security)	$59,806	0.1%	Rank history: not on the FY2022 list, #84 in FY2023, not on the FY2024 list and #36 in FY2025; new, not ranked in FY2020.
58	MC Cook Boiler & Pump Co Top agencies USAF (Department of the Air Force)	$59,370	0.1%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
59	Lewis-Smith Corporation Top agencies DOJ (Department of Justice)	$59,232	0.1%	Rank history: not on the FY2022–FY2024 lists and #3 in FY2025; new, not ranked in FY2020.
60	Daniels Manufacturing Corporation Top agencies USAF (Department of the Air Force)	$53,632	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
61	GP Interprises Inc. Top agencies GSA (General Services Administration)	$52,630	0.1%	Rank history: #52 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; up 66 since FY2020.
62	Global Service Titan LLC Top agencies DOS (Department of State)	$52,217	0.1%	Rank history: not on the FY2022–FY2025 lists; down 53 since FY2020.
63	Bashiti Hardware Top agencies USAF (Department of the Air Force)	$51,582	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
64	Equiparts Corp Top agencies DOJ (Department of Justice)	$50,609	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
65	ERC General Contractors, LLC Top agencies USAF (Department of the Air Force)	$49,748	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Caprice Electronics, Inc. Top agencies Army (Department of the Army) GSA (General Services Administration)	$49,004	0.1%	Rank history: not on the FY2022–FY2023 lists, #67 in FY2024 and #41 in FY2025; up 9 since FY2020.
67	Nippon Bldg.care Limited Top agencies Army (Department of the Army)	$48,773	0.1%	Rank history: not on the FY2022–FY2025 lists; down 47 since FY2020.
68	Bud Griffin / Customer Support Inc. Top agencies NASA (National Aeronautics and Space Administration)	$47,238	0.1%	Rank history: not on the FY2022–FY2025 lists; down 24 since FY2020.
69	ECI Defense Group, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$46,646	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
70	AGM Container Controls Inc. Top agencies DLA (Defense Logistics Agency)	$46,395	0.1%	Rank history: #23 in FY2022, #46 in FY2023, #27 in FY2024 and #22 in FY2025; down 45 since FY2020.
71	R.f. Macdonald Co., LLC Top agencies VA (Department of Veterans Affairs)	$46,381	0.1%	Rank history: not on the FY2022–FY2023 lists, #29 in FY2024 and #85 in FY2025; up 131 since FY2020.
72	Carter Machinery Company, Incorporated Top agencies DHS (Department of Homeland Security)	$44,120	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
73	Southern Utilities Company Inc. Top agencies Smithsonian (Smithsonian Institution)	$41,132	0.1%	Rank history: not on the FY2022–FY2025 lists; up 133 since FY2020.
74	National Contracting Services, LLC Top agencies Commerce (Department of Commerce)	$40,587	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Strijbosch B.V. Top agencies USAF (Department of the Air Force)	$40,399	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Meier Supply Company Inc. Top agencies DOJ (Department of Justice)	$39,875	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	AAA Million Auto Parts Incorporated Top agencies DOS (Department of State)	$37,839	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Secure Facility Corp Top agencies USAID (US Agency for International Development)	$36,774	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Bhayana Brothers LLC Top agencies DHS (Department of Homeland Security)	$36,420	0.1%	Rank history: not on the FY2022–FY2025 lists; down 39 since FY2020.
80	Craftmaster Hardware LLC Top agencies DOJ (Department of Justice)	$35,981	0.1%	Rank history: not on the FY2022–FY2023 lists, #31 in FY2024 and #40 in FY2025; down 19 since FY2020.
81	KSG International, Inc. Top agencies USAF (Department of the Air Force)	$35,276	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Seahorse Defense Supply, LLC Top agencies DHS (Department of Homeland Security)	$35,136	0.1%	Rank history: not on the FY2022–FY2025 lists; up 60 since FY2020.
83	Multistack LLC Top agencies DOS (Department of State)	$34,098	0.1%	Rank history: not on the FY2022 list, #37 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
84	H.i.g. Capital Management Inc. Through Iron Bow Technologies, LLC Top agencies DOS (Department of State)	$33,953	0.1%	Rank history: not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
85	Amsted Graphite Materials LLC Through Baltimore Aircoil Company, Inc. Top agencies USAID (US Agency for International Development)	$33,135	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Capitol City Supply Co Inc. Top agencies Smithsonian (Smithsonian Institution)	$32,551	0.1%	Rank history: #39 in FY2022, #75 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
87	Gateway International Inc. Top agencies DOS (Department of State)	$32,333	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
88	Canyon Marine Solutions LLC Top agencies DHS (Department of Homeland Security)	$31,714	0.1%	Rank history: not on the FY2022 list, #30 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
89	Chesapeake Systems, LLC Top agencies Smithsonian (Smithsonian Institution) VA (Department of Veterans Affairs)	$31,504	0.1%	Rank history: #48 in FY2022, not on the FY2023 list, #28 in FY2024 and not on the FY2025 list; up 6 since FY2020.
90	Premium Chillers Top agencies DOS (Department of State)	$30,508	0.1%	Rank history: not on the FY2022 list, #66 in FY2023, #60 in FY2024 and #57 in FY2025; new, not ranked in FY2020.
91	Lotus Logistics LLC Top agencies DOS (Department of State)	$30,151	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Piedmont Pump and Products, Inc. Top agencies Smithsonian (Smithsonian Institution)	$29,718	0.1%	Rank history: not on the FY2022–FY2024 lists and #51 in FY2025; down 71 since FY2020.
93	San Diego Mechanical & Energy, Inc. Top agencies DOS (Department of State)	$29,466	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	L3Harris Technologies, Inc. Top agencies DLA (Defense Logistics Agency)	$29,350	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
95	Baker Distributing Company LLC Top agencies DOJ (Department of Justice)	$29,086	0.1%	Rank history: #60 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
96	Nidaz LLC Top agencies USAF (Department of the Air Force)	$28,890	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Giga, Inc. Top agencies GSA (General Services Administration)	$27,180	<0.1%	Rank history: #35 in FY2022, #17 in FY2023, #9 in FY2024 and #11 in FY2025; up 39 since FY2020.
98	California Hydronics Corporation Top agencies DHS (Department of Homeland Security)	$26,820	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Bachus & Son, Inc. Top agencies USAF (Department of the Air Force)	$26,571	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
100	Hawaiian Native Corporation Through Aktarius LLC Top agencies USAF (Department of the Air Force)	$25,356	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 229 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 4237

Code	Net obligations	Largest contractor
42371 Hardware Merchant Wholesalers	$48,984,008	Federal Resources Supply Company
42373 Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers	$3,081,342	Prime Veritas General Trading & Contracting
42374 Refrigeration Equipment and Supplies Merchant Wholesalers	$2,169,997	Comfort & Process Solutions, LLC
42372 Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers	$1,985,073	Midwest Mechanical Solutions, LLC

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $57.4 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2020 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 4237 contractors in FY2021?

1. Federal Resources Supply Company ($43.2M), 2. Document Imaging Dimensions Inc. ($1.08M), 3. Mensch Mill & Lumber Corp ($385K), 4. F & M Micro Products Inc. ($366K), 5. Divine Imaging Inc. ($359K), 6. Lockmasters Inc. ($303K), 7. Prime Veritas General Trading & Contracting ($281K), 8. Winnebago Tribe of Nebraska ($244K), 9. Supplyforce.com, LLC ($237K), 10. Global Networks Inc. ($225K).

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