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We specialize in Cast-in anchors, Hex socket cap and set screws, High Quality tension control bolting, ASTM A193 Grade B7 stud bolts, Expansion bolts.
Chemical anchors
and studs F10T High Strength Friction Grip bolts, nuts
and fasteners ASTM A325 high strength Structural bolts
and nuts. Our fasteners, Quality bolts, nuts is at competitive prices to meet the satisfaction of our Valued customers and in an environment where Our Employees are valued, respected and highly motivated, bonded by long-term relationship with our trade associates. |
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The Fastener
Specialist - Asia Bolts & Nuts
Manufacturer of bolts and nuts, fasteners for export
Glossary of terminology on topics related to nuts and bolts, threaded fasteners and tightening techniques.
STRESS AREA
The use of this diameter stems from the work of E. M. Slaughter in the 1930's. He completed carefully controlled tests using various sizes of standard threads and compared their strength with machined bars made from the same bar of material. He found that this mean diameter gave results that agreed with the tensile test results to within about 3%. The error on the minor and pitch diameters was about 15%. Tests completed subsequent to these by other investigators have also shown that the stress diameter is a reasonable approximation to a thread's tensile strength. |
STEP-LOCK BOLT (SLB) It is these horizontal portions that are known as steps. Published literature indicates that the thread form performs well when tested on a transverse vibration test machine. However manufacturing difficulties may prevent its widespread adoption.
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