Hex Tap Bolts

Hex Tap Bolts

Standard Hex Bolts that are Fully Threaded. Stocked in Steel, Stainless and Grades 5 and 8. ASTM A307 Tap Bolt: A low carbon, hex head bolt with a machined point which is threaded to the head.
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Name: Hex Tap Bolts, set screews

Descriptions: Standard Hex Bolts that are Fully Threaded. Stocked in Steel, Stainless and Grades 5 and 8. ASTM A307 Tap Bolt: A low carbon, hex head bolt with a machined point which is threaded to the head. Grade-5 Tap Bolt: A tap bolt made from medium carbon steel.

Grade-8 Tap Bolt: A tap bolt made from medium carbon alloy steel and heat-treated. Stainless Tap Bolt: A tap bolt made from 18-8 stainless steel


Applications: ASTM A307 Tap Bolt: To be used in drilled and tapped holes which are threaded full length. Used instead of a stud and a nut.

Grade-5 Tap Bolt: Used to mount motors to machinery; also popular in automotive and truck repair.

Grade-8 Tap Bolt: Used in automotive and fleet industries where greater tensile strength is required than can be met by a grade-5.

Stainless Tap Bolt: Used in in environments corrosive to carbon steel, in tapped holes that are threaded full length.


Material: ASTM A307 Tap Bolt: Bolts shall be made from a carbon steel which conforms to the following chemical composition requirements--Carbon: 0.33 maximum; Manganese: 0.93; Phosphorous: 0.041

Grade-5 Tap Bolt: AISI 1030 - 1541 or equivalent medium carbon steel. Use of an alloy such as 4037 modified steel is also acceptable.

Grade-8 Tap Bolt: Medium carbon alloy steel. Note: For diameters 1/4 through 7/16 inch, it is permissible to use AISI 1541 steel.

Stainless Tap Bolt: 18-8 Stainless steel


Heat Treatment: Grade-5 Tap Bolt: Bolts shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800°F.

Grade-8 Tap Bolt: Bolts shall be heat treated, oil quenched and tempered at a minimum tempering temperature of 800°F.


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