- Jan 18, 2022
- 1 min read

API Q1 Certification & API-20E / API-20F Licences

Energy Bolting has been assessed by the American Petroleum Institute and we are proud to announce achieving certification to API Q1.

The award of API Q1 demonstrates that Energy Bolting meets high standards of manufacturing and quality management.

Energy Bolting is now licensed to mark bolting with the API Monogram:

API 20E (BSL 1,2,3) and API 20F (BSL 2,3)

API 20E and 20F specify requirements for different bolting specification levels (BSL). The BSL designations define different levels of technical, quality and qualification requirements.

The highest criticality level (BSL-3) is reserved for applications where bolting failure is not an option.

API 20E Licence Number: 20E-0098	API 20F Licence Number: 20F-0048
Alloy and Carbon Steel Bolting	Corrosion Resistant Bolting
Studs: All Sizes. Machined Threads. BSL-1 BSL-2 & BSL-3	Studs: All Sizes. Machined Threads. BSL-2 & BSL-3
Studs: All Sizes. Rolled Threads. BSL-1 BSL-2 & BSL-3	Studs: All Sizes. Rolled Threads. BSL-2 & BSL-3
Machined Bolts, Screws and Nuts: All Sizes. Machined Threads. BSL-1 BSL-2 & BSL-3	Machined Bolts, Screws and Nuts: All Sizes. Machined Threads. BSL-2 & BSL-3
Machined Bolts, Screws and Nuts: All Sizes. Rolled Threads. BSL-1 BSL-2 & BSL-3	Machined Bolts, Screws and Nuts: All Sizes. Rolled Threads. BSL-2 & BSL-3

API 20E Bolting Materials ASTM A193 GRADE B7 ASTM A193 GRADE B7M ASTM A320 GRADE L7 ASTM A320 GRADE L7M ASTM A320 GRADE L43 ASTM A194 GRADE 2H ASTM A194 GRADE 7 ASTM A194 GRADE 2HM ASTM A194 GRADE 7M ASTM A540 GRADE B22 ASTM A540 GRADE B23