Tantalum Bolt & Fastener, LLC
56 Clematis Ave, Waltham, MA 02453
Operating signal within 12 months from two or more independent sources.
What they make
Bolt, Nut, Screw, Rivet, and Washer Manufacturing332722- fasteners
- flanges
- coatings
- plating
- 17-4 PH
- bolts
- screws
- studs
- threaded rod
- washers
- Alloy 230
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Clematis Machine and Fixture | Waltham | Machine Shops 332710 | UNVERIFIED | 0.1 KM |
| Queen Screw & Mfg. INC. | Waltham | Bolt, Nut, Screw, Rivet, and Washer Manufacturing 332722 | LIKELY ACTIVE | 2.2 KM |
| Marposa Manufacturing | Waltham | Machine Shops 332710 | LIKELY ACTIVE | 2.9 KM |
| Hope, INC. | Needham Heights | Fluid Power Valve and Hose Fitting Manufacturing 332912 | ACTIVE | 8.6 KM |
| Naushon Engineering LLC | Winchester | Machine Shops 332710 | LIKELY ACTIVE | 9.7 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen SEP 2026
- SAM.gov entity registrationOPERATINGRecord QBSRJZCGTNK1 · first seen OCT 2025 · last seen AUG 2026
IN MIDDLESEX COUNTY85 other plants share this one’s industry (Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing, NAICS 3327); 43 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: TANTALUM BOLT & FASTENER, LLC · AUG 2026
- Street address
- SAM.gov: 56 CLEMATIS AVE · AUG 2026
- City
- SAM.gov: WALTHAM · AUG 2026
- State
- SAM.gov: MA · AUG 2026
- Coordinates
- Census geocoder: 42.3834171356,-71.203556444994 · JUL 2026
- Website
- SAM.gov: www.extreme-bolt.com · AUG 2026
- CAGE code
- SAM.gov: 73AB2 · AUG 2026
- SAM registration expires
- SAM.gov: 2027-08-07 · AUG 2026


