Tension Control Bolts Ltd operates a quality management system in accordance with BS EN ISO 9001:2015 and NHSS 3, maintaining full traceability of our products from their initial source of supply through to despatch to the customer.
Quality is at the forefront of everything we do, and we are proud of the outstanding reputation we have created over the last 30 years whilst becoming the market leader in tension control bolting.
Through continuous improvement we will meet or exceed our customers’ needs and expectations in product, service and support. The company constantly monitors its quality performance and implements improvements where appropriate.
Quality Certificates
- ISO 9001:2015
- National Highways Sector Scheme No 3 (NHSS3)
- Railway Industry Supplier Qualification Scheme (RISQS)
Please visit our Downloads section for all quality documentation.
Quality Control
To ensure our products conform to all relevant standards and specifications, TCB operate specialist in-house testing equipment including:
- Neutral salt spray (NSS) corrosion testing in accordance with ISO 9227
- Tensile testing to ISO 898-1
- Nut proof load testing to ISO 898-2
- Suitability for preloading to EN 14399-2
- Suitability test for calibrated preload to EN 14399-10
- Hardness testing to ISO 6508-1
- Tri-Roll Thread Comparators
Tension Control Bolts Ltd are approved suppliers to: |
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Tension Control Bolts are specified by consulting engineers including: |
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Quality