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Grade 5 Fasteners



Grade 5 Fasteners

KL Jack's Quality North American
Grade 5 Industrial Fasteners

Since 1979 those of us at K.L. Jack & Co. have committed ourselves to stocking only the highest quality heat-treated industrial fasteners, almost universally sourced from North American manufacturers. Medium-carbon, heat treated in a carbon controlled atmosphere, 1/4 in. to 11/2 in., inclusive, with minimum tensile strength of 120,000 psi in diameters through 1 in. and 105,000 psi for diameters over 1 in. through 1 1/2 in.

A Grade 5 fastener specification will also meet other specifications such as ASTM A449.

For the builder, the mechanic or the manufacturer the best advertisement for their business will always be the quality of materials and workmanship in their product, be it a new building, a repair well done or a machine they have built. For us, the very best advertisement will always be our customers knowledge that a heat treated Grade 5, Grade 8 or Structural Steel bolt sourced from K.L. Jack & Co. comes from not very far away at all, and it was sold by a company that cares about product quality. We would like our customers to know that we are committed to their safety by supplying the highest quality fasteners possible and that we will not compromise that principal just to maximize a profit.
   
Grade 2, Grade 5 and Grade 8 Fastener Comparisons

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Grade 2 Fastener
Grade 5 Fastener
Grade 8 Fastener

Low-carbon bright 1/4 in. to 1 1/2 in. inclusive, with minimum tensile strength of 74,000 psi in diameters through 3/4 in. and 60,000 psi for diameters over 3/4 in. through 1 1/2in.

NOTICE TO FINE THREAD USERS!

Grade 2 is not recommended for use with fine threads. We suggest the use of Grade 5 fastener or better because of superior resistance to stripping during tightening. Grade 2 fasteners may be used as an alternate for ASTM A307 Grade A.

Medium-carbon, heat treated in a carbon controlled atmosphere, 1/4 in. to 11/2 in., inclusive, with minimum tensile strength of 120,000 psi in diameters through 1 in. and 105,000 psi for diameters over 1 in. through 1 1/2 in.

A Grade 5 fastener specification will also meet other specifications such as ASTM A449.

Alloy, heat treated in a carbon controlled atmosphere, 1/4 in. to 1 in., inclusive, with minimum tensile strength of 150,000 psi. A Grade 8 fastener specification will also meet ASTM specification A354 Grade BD.

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IMPORTANT DISCLAIMER: All of the information provided in this section has been assembled with concern for accuracy. It is intended for advisory purposes only and use of this information is completely voluntary. We do not guarantee its completeness or validity and assume no responsibility for any loss, claims or damages resulting from use or application of this information. All information is subject to change without prior notice. Be sure to verify!