Sigma Fasteners

Manufacture and Distribute Fasteners for Energy

Phone: (281) 214-8800
Fax: (281) 214-8801

Main Content

Providing quality bolting and coating for the energy industry since 2004.
ISO 9001:2015
API Q1 Certified
API Monogram
20E-0017 BSL 1, 2 & 3
20F-0007 BSL 2 & 3

API 20E & API 20F Bolting