| BIBaron Industries | Woburn | MA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| BSBay Steel Co., INC. | Halifax | MA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| BSBeacon Sales Acquisition, INC | West Bridgewater | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| BTBehning Tool | Hanover | MA | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| BPBenchmark Precision Products LLC | West Newbury | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| BPBenco Precision Machining INC | Gloucester | MA | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| BCBenjamin C Lavoie | Buzzards Bay | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BMBerkshire Manufacturing Corporation | Southwick | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BMBetter Maintenance Sheet Metal CORP. | Newburyport | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| BOBlack Oxide Company, LLC | Worcester | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BVBlackstone Valley Machining LLC | Mendon | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BSBonner Sheet Metal CORP. | Auburn | MA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| BABoston Automatic Sprinkler Fabrication, INC. | Rockland | MA | Fabricated Metal Product Manufacturing332913 | — | ◇ UNVERIFIED |
| BLBoston Lasers Precision Cut, LLC | Amesbury | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BRBoston Renaissance Charter School | Boston (hyde Park) | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| BUBoston University-department of Physics | Boston | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BFBoundary Fence & Railing Systems, INC. | Marlborough | MA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| BABps Automated Manufacturing Solutions | Kingston | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| BLBrewer's Ledge Incorporated | Randolph | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| BEBriscon Electric | Auburn | MA | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| BSBryant Sheet Metal, INC. | Hanover | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| BABullard Abrasive Products | Westborough | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CPCambridge Press | Somerville | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CPCantara Property | Southbridge | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CCCape Cod Cupola Co, INC. | Dartmouth | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CCC & C Fabricating, Inc. | Beverly | MA | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
 Centerline Machine Company, INC. | Beverly | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CKChalmers & Kubeck North | Westfield | MA | Fabricated Metal Product Manufacturing332911 | — | ◇ UNVERIFIED |
| CIClearmotion INC | Billerica | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CBCliflex Bellows Corporation | Boston | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CICoastal Industries, INC | Haverhill | MA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| CRComplete Reconditioning Specialist | Fairhaven | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators | Auburn | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| CMCreative Modeling & Die, LLC | Attleboro | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CACrocker Architectural Sheet Metal Co., INC. | Wellesley | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| CICsh Industries, INC. | Plymouth | MA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| CECunningham Engineering | Danvers | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DPD&B Property, LLC | Hudson | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DEDan-kar Engineering LLC | Woburn | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DRDan Ray Machine Company | Haverhill | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DCD. Clement, INC. | Dunstable | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
 Dcp Spring Acquisition Company INC Hardware Products | Chelsea | MA | Fabricated Metal Product Manufacturing332613 | — | ◇ UNVERIFIED |
| DIDds Industries INC | Fall River | MA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| DMDecker Machine Works, INC | Ashfield | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| DMDelta Machine & Tool, INC. | Palmer | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DSDesigner Sinks | Hanover | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
 DGG Industries, Inc. | Attleboro | MA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| DCDilon Company Inc | Attleboro | MA | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| DMDj Machine | North Andover | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| DMDraper Metals | Middleboro | MA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
