JEGS 555-83531 High-Strength Head Bolts Includes:

• (20) 7/16 in.-14 x 4.172 in. UHL (Under Head Length) w/12-point head
• (4) 7/16 in.-14 x 3.953 in. UHL (Under Head Length) w/12-point head
• (8) 7/16 in.-14 x 2.172 in. UHL (Under Head Length) w/12-point head
• (32) 7/16 in. I.D. Heat Treated Washers with Internal Bevel
• (1) Anti-Seize Thread Lubricant

JEGS 555-83531 High-Strength Head Bolts Features:

• Fits Big Block Chevy engines including 396, 402, 427, 454, and others based on the popular platform
• The perfect upgrade when replacing stock head bolts
• Specifications: 7/16-14 thread w/12-point head
• Wrench Size: 1/2 in.
• 190,000 psi yield strength chromoly alloy steel, which is approximately 15% stronger than Grade 8

JEGS 555-83531 High-Strength Head Bolts Note:

• These bolts are re-usable (not Torque-To-Yield)