Icon FlagMade in the USA
800-231-6355 M-F 8-5 CST
Corporate Headquarters 725 North Drennan, Houston, Texas 77003-1320 The Recognized Leader in Domestic Stud Manufacturing Since 1961
Quality

QUALITY THE DAN-LOC WAY

Your operation can’t risk failures. You have to know that you’re getting quality products that live up to your performance requirements. DAN-LOC goes above and beyond to give you this level of assurance.

There are several stages that go into the manufacturing process, and DAN-LOC leaves nothing to chance with any of them, including the sourcing of our raw materials. All of our steel is made in the U.S. and comes from mills that we know and have worked with for a long time. These mills perform vacuum degassing and controlled diameter reduction to ensure quality and make the steel cleaner and stronger. Yet, even though we have immense confidence in our suppliers, we still test our incoming material, so you can have immense confidence in our products. We perform Positive Material Identification (PMI) testing to ensure we have received what was expected and that it is manufactured to specification.

From PMI testing on, we handle every step ourselves in our Houston manufacturing facility. We use rigorous process controls in our heat-treating and roll-threading methods to attain the highest level of product reliability. Then we double check our work through exhaustive laboratory analysis. We mechanically test samples from each bolt production run to validate tensile and yield strength, elongation and reduction-of-area percentages, proper Charpy impact values for low temperature applications, and thread geometric integrity.

Our ultimate goal always is to provide the highest level of quality in everything we make and everything we do. We work to exceed industry standards in our products and to exceed customer expectations in our service. While stud bolts and ring joint gaskets may seem like simple items, they are critical components to our customers operations, and they absolutely must perform. We believe one of our greatest duties is to help our customers prevent failures, thus all of our procedures are geared toward reducing their risk, and boosting their confidence.

Download our Quality Verification publication for an inside look at the bolt manufacturing industry and how to reduce your risk.

Download our Country of Origin publication for more information regarding geographical sourcing issues.

Download API Certificate or ISO Certificate

About us

DAN-LOC® Bolt & Gasket is a U.S. manufacturer and distributor of superior quality stud bolts and metal gaskets used primarily in the energy industry, but also in other industrial business segments.

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Interactive Brochures

Brochure

View DAN-LOC brochures in interactive and PDF formats.

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Quality Assurance

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Your operation can’t risk failures. You have to know that you’re getting quality products that live up to your performance requirements. DAN-LOC goes above and beyond to give you this level of assurance.

Learn more
  • DAN-LOC Express - Texas
  • 725 North Drennan
  • Houston, Texas 77003-1320
  • Telephone: 713-356-3500
  • Toll Free: 800-231-6355
  • Email DLX Texas
  • DAN-LOC Express - California
  • 20444 Tillman Ave
  • Carson, California 90746
  • Telephone: 310-438-4320
  • Toll Free: 800-682-2658
  • Email DLX California
  • DAN-LOC Express - Virginia
  • 1345 Taylor Farm Road
  • Suite 110
  • Virginia Beach, Virginia 23453
  • Telephone: 757-468-1781
  • Email DLX Virginia
  • DAN-LOC Express - Ohio
  • 294 Fox Drive
  • Piqua, Ohio 45356
  • Telephone: 937-778-0485
  • Email DLX Ohio
  • DAN-LOC Express - Canada
  • #2, 9825 - 44 Avenue
  • Edmonton, Alberta, Canada
  • T6E 5E3
  • Telephone: 780-701-0524
  • Email DLX Canada

CONTACT DAN-LOC

Thank you for your interest in Dan-Loc. We appreciate your interest and our team will touch base with you as quickly as possible.

For more immediate assistance:


DAN-LOC Express – Texas
Toll Free: 1-800-231-6355
Email DLX Texas

DAN-LOC Express – California
Toll Free: 1-800-682-2658
Email DLX California

DAN-LOC Express – Virginia
Telephone: 757-468-1781
Email DLX Virginia

DAN-LOC Express – Ohio
Telephone: 937-778-0485
Email DLX Ohio

DAN-LOC Express – Canada
Telephone: 780-701-0524
Email DLX Canada