| Business | Phone |
| Wjs Inc 86 Billerica Ave # 5, North Billerica 1862 | (978) 663-6646 |
| Accuspec Machine Inc 16 Burnham Rd, North Billerica 1862 | (978) 667-0169 |
| Alpine Precision Inc 23 Sullivan Rd, North Billerica 1862 | (978) 667-6333 |
| Nashoba Valley Manufacturing 34 Sullivan Rd # 27, North Billerica 1862 | (978) 670-5356 |
| Munsey Screw Machine Products 3 Executive Park Dr, North Billerica 1862 | (978) 667-4053 |
| Microwave Components Spec 34 Sullivan Rd # 10, North Billerica 1862 | (978) 667-1215 |
| Mike's Precision Machine 14 Hadley St # B, North Billerica 1862 | (978) 667-9793 |
| Scott Machine 43 Letchworth Ave, North Billerica 1862 | (978) 663-4545 |
| Roberts Prototype Machining 25 Sullivan Rd # 2, North Billerica 1862 | (978) 663-7868 |
| Ree Machine Works 34 Sullivan Rd # 7, North Billerica 1862 | (978) 663-9105 |
| Concept Machining 25 Sullivan Rd, North Billerica 1862 | (978) 663-4999 |
| Precision Specialties 19 Sterling Rd # 5a, North Billerica 1862 | (978) 670-1008 |
| Ptp Machining 25 Sullivan Rd # 7, North Billerica 1862 | (978) 663-9004 |
| Patriot Machine & Engineering 11 Esquire Rd, North Billerica 1862 | (978) 667-8737 |
| D'L Tech Machine Inc 144 Rangeway Rd # B, North Billerica 1862 | (978) 439-0500 |
| Palace Manufacturing Corp 25 Sullivan Rd, North Billerica 1862 | (978) 663-6100 |
| Pan-Tec Inc 12 Republic Rd, North Billerica 1862 | (978) 663-5130 |
| E & D Machining Inc 19 Sterling Rd # 5a, North Billerica 1862 | (978) 667-4848 |
| Lane Machine Co 34 Sullivan Rd, North Billerica 1862 | (978) 262-9763 |
| L & L Engineering Co 18 Republic Rd, North Billerica 1862 | (978) 667-1122 |
| J & V Machine 34 Sullivan Rd # 28, North Billerica 1862 | (978) 667-1027 |