1956-1975 Corvette C1-C3 Hardtop Hold-Down Bolt Set 3727973

1956-1975 C1-C3 Hardtop Hold-Down Bolt Set 3727973 - OEM Number(s) (3727973)

Restore a factory-secure fit to your removable hardtop with this correct GM 3727973 hold-down bolt set.

Over time, original hardtop hardware can strip, corrode, or go missing, leaving your Corvette hardtop less than secure. This reproduction bolt set is built to GM specifications with the proper flanged head, correct dimensions, and durable finish. Sold as a complete car set, it provides the authentic hardware you need to keep your hardtop tight and true.

Fits the Following Corvette Models:

• C1: 1956–1962

• C2: 1963–1967

• C3: 1968–1975 (convertibles only)

Material/Finish

• Steel construction

• Correct factory-style finish

Dimensions

• 3/4" flanged head (19.05 mm)

• 5/8" long (15.88 mm)

• 1/2" wrench size (12.7 mm)

Features/Benefits

• GM reference number 3727973

• Factory-correct reproduction hardware

• Restores proper fit and security for Corvette hardtops

• Includes correct bolt head style and dimensions

• Durable construction for long-term reliability

• Sold as complete car set

Because Details Matter
Hardtop security depends on the right hardware. Using the correct GM 3727973 bolt set restores confidence in your Corvette’s fit and preserves originality—because details matter.

Parts We Recommend

• 

  1963-1975 C1-C3 Hardtop Side Mounting Hardware 8 Piece Kit

Also known under these part numbers: (For reference only)

• 10022222
• 3727973
• 431007
• CH-4
• TA07