3/8-24 x 4" Grade 8 SAE Fine Yellow Zinc Finish Hex Cap Screw-Partially Threaded
Partially Threaded-Grade 8 Fine Thread Hex Cap Screws are made of medium carbon alloy tempered steel. They have a greater tensile strength than a Grade 5 Hex Cap Screw and have a tensile strength of 150,000 pounds per square inch.
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j
Your High quality bolts, and now Head Bolts for the 1500 Triumph Spitfire engine that continued to blow head gaskets. The original head bolts stretch for that engine causing a leak, these head bolts hold firm at the perfect Torque required to hold the head gasket in place and sealed. I recommend putting a set together with the 3/8 thick washer and sell them on line at a good price.
Sincere thanks,
Jackie Winters
Lemon Protection TM est.1984
