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Contractors and subcontracts around the global use the National Aerospace Specification when building aerospace systems and equipment.

Contractors and subcontracts around the global use the National Aerospace Specification when building aerospace systems and equipment. Since 1941, the National Aerospace Specification Committee (NASC) within the Aerospace Industries Association has been developing and maintaining the National Aerospace Specification (NAS) for compliance in the design and build of parts for aircraft, spacecraft, weapon systems and airborne electronics. Components used in the manufacturing of subsystems are also directed by NAS to ensure consistent delivery of design and usage that optimizes performance, efficiency and productivity.

The National Aerospace Specification for drills are covered by three (3) standards – NAS907, NAS937 and NAS965. Each of these specifications has “Types” within each standard to call out the specific size of the drill. The standards call out the material, surface treatment and point.

Previously featured on AIA.

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Precision Twist Drill brings together a program of rotary and indexable tooling with more than 150 years of industry experience. Their teams and brands re​​​li​ably meet your requirements. ​They deliver the market-leading brands of Precision Twist Drill (PTD), Union Butterfield, ​Dormer and Pramet to our global customer base.​

With 20 offices worldwide serving over 100 countries, production facilities in Europe and South America and a highly developed logistics network, Precision Twist Drill offers truly global coverage.

Their ambition is to be the leading global supplier of metal cutting tools to the general engineering industry by 2020.

They passionately believe in building long-term partnerships, sharing their expertise and being honest and available at all times. These qualities are deeply rooted in the fabric of their company and every Precision Twist Drill employee is charged with upholding ​and promoting them with pride.

This is how Precision Twist Drill  continues to build trust. Today, tomorrow, forever.

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