Qualified Bolting Solutions for Critical Oil & Gas Applications
API 20E & API 20F Bolting
MillsForge supplies API 20E and API 20F bolting through qualified API-licensed manufacturing resources for oil & gas, offshore, subsea and other critical-service applications.
Available manufacturing scope includes API 20E BSL 1 & BSL 2 and API 20F BSL 2 & BSL 3, with controlled manufacturing, testing, material traceability and project-specific documentation.
API 20E BSL 1 | API 20E BSL 2 | API 20F BSL 2 | API 20F BSL 3
Studs, Bolts, Screws & Nuts
API Bolting Supply Capabilities
MillsForge coordinates the supply of critical bolting from qualified manufacturing sources, with production routes selected according to API specification, BSL, material grade, size and project requirements.
| Product | Manufacturing Capability | API Scope |
| Studs | Rolled Threads | API 20E BSL 1 & 2 |
| Hot Formed Bolts & Screws | Rolled Threads | API 20E BSL 1 & 2 |
| Hot Formed Nuts | Machined | API 20E BSL 1 & 2 |
| Hot Formed Bolts & Screws | Project-specific manufacturing | API 20F BSL 2 & 3 |
| Roll Threaded Studs, Bolts & Screws | Roll Threaded | API 20F BSL 2 & 3 |
| Hot Formed Nuts | Hot Formed | API 20F BSL 2 & 3 |
- API 20E certificate specifically covers studs, hot-formed bolts/screws and hot-formed nuts.
- API 20F certificate covers hot-formed bolts/screws, roll-threaded studs/bolts/screws and hot-formed nuts.
API 20E Bolting
Carbon & Alloy Steel Bolting
API 20E establishes requirements for bolting used in the petroleum and natural gas industries, including controls related to manufacturing, qualification, testing and traceability.
Through qualified manufacturing resources, MillsForge can supply API 20E bolting within the following licensed scope:
BSL 1 & BSL 2
- Studs
All sizes · Rolled threads - Hot Formed Bolts & Screws
< 1.50 in · Rolled threads
≥ 1.50 in · Rolled threads - Hot Formed Nuts
< 1.50 in · Machined
≥ 1.50 in · Machined
Need API 20E Bolting?
Send us the material grade, product type, dimensions, BSL, quantity and applicable project specifications for technical review.
API 20F Bolting
Corrosion-Resistant Bolting for Critical Service
MillsForge supplies API 20F corrosion-resistant bolting through qualified API-licensed manufacturing resources for demanding oil & gas applications where material integrity, manufacturing control and traceability are critical.
BSL 2 & BSL 3
Licensed manufacturing scope includes:
- Hot Formed Bolts & Screws
- Roll Threaded Studs, Bolts & Screws
- Hot Formed Nuts
- Available licensed size ranges:
- < 1.50 in (38.1 mm)
≥ 1.50 in (38.1 mm)
Both size categories are covered at BSL 2 and BSL 3 under the supplier’s current API 20F license.
API 20F BSL 3 Capability
For critical corrosion-resistant bolting requirements, MillsForge can coordinate BSL 3 supply within the qualified manufacturer’s licensed product and size scope.
Controlled Manufacturing Route
From Raw Material to Final Release
Critical bolting requires more than final dimensional inspection. Manufacturing and quality activities can be controlled throughout the production route according to the applicable specification, material, BSL and project requirements.
01
Raw Material
Material identification
→ 02
MTC Review
Certificate verification
→ 03
Hot Forging
Controlled forming
→ 04
Heat Treatment
Specified thermal cycle
→ 05
Machining
Dimensional control
→ 06
Testing
Mechanical & metallurgical
→ 07
NDE
As specified
→ 08
Final Inspection
Dimensions & marking
→ 09
Release
Documentation package
Testing & Inspection
Verification for Critical Bolting
Testing and inspection are performed according to the applicable API specification, material specification, BSL and customer/project requirements.
Mechanical Testing
Tensile Strength
Yield Strength
Elongation
Reduction of Area
Hardness Testing
Hardness Testing
Impact Testing
Impact testing when required by the applicable specification or project.
Metallurgical Examination
Grain Size
Duplex Grain Size
Microstructure
Macrostructure
Nondestructive Examination
PT and other NDE as required by the applicable specification or purchase order.
Dimensional & Visual Inspection
Thread verification
Critical dimensions
Final dimensional inspection
Visual inspection
Example Quality Plan
UNS N07718 120K Heavy Hex Nut
Product: Heavy Hex Nut
Material: UNS N07718 120K
Product Standard: ASME B18.2.2
Manufacturing Route: Hot Forging + Machining
Inspection: Material, Mechanical, Metallurgical, NDE & Dimensional
An example manufacturing and inspection route includes incoming material certification review, chemical composition verification, hot forging, solution treatment, machining, aging, mechanical and metallurgical testing, PT, dimensional inspection and final documentation release.
Documentation & Traceability
Documentation That Follows the Order
Depending on specification and PO requirements, the documentation package can include:
- Material certificates / MTRs
- Chemical analysis reports
- Mechanical test reports
- Hardness reports
- Impact test reports
- Metallurgical examination reports
- NDE reports
- Heat treatment records
- Dimensional inspection reports
- Packing list
- Final product certification
- Third-party inspection documentation, when specified
Applications
Built for Critical Oil & Gas Service
- Wellhead Equipment
- Subsea Equipment
- Valves & Pressure Equipment
- BOP Systems
- Choke & Kill Manifolds
- Offshore & HP/HT Systems
Why MillsForge
From Specification to Delivery
- Specification Review
- We review material, BSL, dimensions, manufacturing route, testing and documentation requirements before quotation.
- Qualified Manufacturing Resources
- Orders are matched with manufacturing resources whose qualified scope is appropriate for the requested product.
- Inspection Coordination
- Customer and third-party inspection requirements can be incorporated into the ITP and production schedule.
- Documentation Control
- Material traceability, testing records and final documentation are coordinated as part of the order.
- International Supply
- Export packing, documentation and international delivery can be coordinated according to the agreed Incoterm.
FASTENER REQUIREMENTS
Request a Quote for API 20E / API 20F Bolting
Send us your specification, BOM or drawing. We will review the API specification, BSL, material, dimensions, testing and documentation requirements before quotation.
What to include in your RFQ:
- API Specification 20E / 20F
- BSL BSL 1 / BSL 2 / BSL 3
- Product Stud / Bolt / Screw / Nut / Other
- Material / Grade
- Diameter / Thread
- Length
- Quantity
- Coating
- Applicable Specification
- Testing / NDE Requirements
- Third-Party Inspection
- Required Delivery Date
- Upload Drawing / BOM / Specification
FAQ
API 20E applies to alloy and carbon steel bolting for petroleum and natural gas industry applications, while API 20F addresses corrosion-resistant bolting.
Through qualified manufacturing resources, MillsForge can coordinate API 20E bolting within a licensed BSL 1 and BSL 2 scope and API 20F bolting within a licensed BSL 2 and BSL 3 scope. Actual availability is confirmed against the requested product, size, material and manufacturing route.
Yes, API 20F BSL 3 bolting can be coordinated within the qualified manufacturer's licensed product and size scope.
Third-party inspection requirements can be incorporated into the ITP and agreed inspection points before production.
Provide the API specification, BSL, material grade, product type, thread and dimensions, quantity, applicable equipment/material specifications, testing requirements and required documentation.