H & S Hex Bolts Product Page

Hex Head Cap Screws
Grade 2 Hex Head Cap Screw
Description	A low or medium carbon steel, externally threaded mechanical device ¼” diameter or larger, with a trimmed hex head and a washer face on the bearing surface
Applications / Advantages	Economical for use in non-critical applications where the fastener is not subject to extreme temperatures or stress beyond the limits listed herein.
Material	AISI 1006 - 1050 or equivalent steel.
Grade 5 Hex Head Cap Screw
Description	A cap screw made from medium carbon steel and heat-treated.
Heat Treatment	Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800° F.
Applications / Advantages	Has greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels.
Material	Medium carbon steel. Use of an alloy steel is also acceptable.
Grade 8 Hex Head Cap Screw
Description	A cap screw made from medium carbon alloy steel and heat treated.
Heat Treatment	Grade 8 cap screws shall be heat-treated, oil quenched and tempered at a minimum temperature of 800`F.
Applications / Advantages	Has greater tensile strength than a Grade-5. Designed for use in high stress applications
Material	Medium carbon steel. Note: For diameters ¼ through 7/16 inch, it is permissible to use AISI 1541 steel.
Hex Head Cap Screw - Stainless Steel, 18-8 & 316
Description	18-8 and 316 stainless steel cap screws are both made from austenitic alloys are as described below.
Applications / Advantages	18-8: Used in products that require general atmospheric corrosion resistance, such as chemical and food -processing equipment. Some chemical environments may require special corrosion resistant materials. 316: The molybdenum content gives this type of stainless even greater corrosion resistance than 18-
Material	18-8: A cap screw made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having a chromium content of 17-19% and nickel content of 8-10%. 316: A cap screw made from 316 stainless steel, an austenitic allow which differs from 18-8 by its molybdenum content (2-3%) and a higher nickel content (10-14%).

Heavy Hex Bolt
Description	Similar to cap screw except has larger head in thickness & across the flats. May not have washer face.
Applications / Advantages	Low carbon - similar uses as cap screws. Alloy and stainless - commonly used for bolting flanges and structural steel.
Material	ASTM 193 GR B7 used for high pressure and temperature will hold its strength to 1000 F. ASTM 193 GR B8 - Stainless steel with corrosion resistance, 75,000 tensile A-325 medium carbon use for structural bolt A-490 alloy steel use for structural bolts.

Hex Head Tap Bolt
Description	Grade-2 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 carbon steel .
Applications / Advantages	Grade-2 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.
Material	Grade-2 Tap Bolt: AISI 1006 - 1025 or equivalent steel. Grade-5 Tap Bolt: AISI 1030 - 1541 or equivalent medium carbon steel. Use of an alloy such as 4037 modified steel is also acceptable.