Eye bolts are threaded fasteners with a loop or an eye on one end. If using in a tapped hole, the thread engagement should be at least 1-1/2 times the 

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Dec 17,  · An eye bolt is to be used for lifting a load of 60 kN. Find the nominal diameter of the bolt, if the tensile stress is not to exceed 100 MPa. Assume coarse threads. Answer: Given Data A static Lifting Load P = 60kN = 60×10 3 N Permissible Tensile stress σt = 100 N/mm 2 From the above relation 60×10 3 = (π /4)× ( dc) 2 × 100 × 1

The length of thread engagement is the length of which the bolt and mating part's threads are in contact with each other. Keep in mind - While designing for minimum thread engagement length the designer should take into consideration the tolerance stack-up of the joint, the material ultimate tensile strengths, and the tapping tool being used.

It is commonly known that the minimum recommended thread engagement to make a strong connection for a component with a tapped hole is approximately 1 times the nominal diameter in steel and 2 times the nominal diameter in aluminum.

Minimum Thread Engagement (Bolt Failure) Chart - Metric 332 362 165 Nominal Diameter Stress Area Class 8.8 Class 10.9 Class 12.9 Class 8.8 Class 10.9 Class 12.9 Class 8.8 Class 10.9 Class Thread Size Thread Size Fine Threads Yield Strength (Mpa): Yield Strength (Mpa): Yield Strength (Mpa): Created Date:

Proper thread engagement must be maintained. Use a washer with approximately the same diameter as the eye bolt shoulder and the smallest inside diameter that will fit the eye bolt shank. If the hook does not go completely into the eye bolt, use a shackle to avoid loading the hook tip. Installation for In-line Loading

c) When using eyebolts in a tapped blind hole, the effective thread length must be at least one and 1/2 times the diameter of the bolt for engagement in 

Bolt thread stripping occurs when thread engagement is short, and the nut consists of stronger material. Minimum thread engagement can be calculated by determining the yield points of both materials of the male and portions, as well as the total strength of the male threaded assembly. In the end, a little math, with and eye

diameter of the thread. Blind holes must be drilled to a depth to ensure that the contact surface of the eye bolt is well sealed.

An old rule-of-thumb³ is that in a threaded hole in steel, the length of engagement should be at least 1.5 times the diameter of the screw, and in cast iron or brass, 1.8 to 2 times the diameter. Blind holes should be at least half a diameter deeper than the length of engagement. 1. ANSI B18.6.3-1972 (R1991) 2. ANSI/ASME B18.2.2-1987 (R1999) 3.