Riser Bolts

LoneStar Fasteners is recognized as a leader in manufacturing specialty riser bolts for oil & gas offshore installations.

Typically manufactured from 4340 material, LoneStar’s riser bolts are hot forged to insure proper grain flow and meet customer’s requirements.

Through our in-house forging, manufacturing, testing, and coating processes, we provide quality, turnkey parts meeting customer’s specifications and delivery requirements.

Bonnet Bolts

Bonnet bolts are manufactured to customer specifications. They are supplied to the wellhead and valve original equipment manufacturers (OEM’s).

After manufacture bonnet bolts can be coated in-house with a variety of special coatings.

Stud Bolts

LoneStar Fasteners manufacturer all thread (continuous thread) studs in all ASTM and material grades in coarse, fine, metric, 8 pitches, and other specialty thread series. All thread studs are shipped with nuts assembled to insure proper fit and protect the parts during shipment.

Studs are provided with compatible nuts per ASTM specifications.
We pack parts in boxes with a maximum weight of 50 pounds each for easy handling. Boxes are packed with large labels that provide complete shipping information including customer purchase order number, part number, item number, heat code and additional information per customer requirements.

LoneStar Fasteners maintains a complete inventory of standard sizes, and can provide plated and coated parts through our in-house zinc plating and Fluoropolymer® processing capability.

Our extensive inventory of threaded bar in all material grades, allows LoneStar Fasteners to cut, chamfer, plate or coat, and ship same day if required.

We can provide modified parts (B7M and L7M) for NACE service requirements through our in-house heat treating area.

All studs are stamped with a three digit code for heat code traceability that can be access through our web site.