• Trusted by Racers

    Professional-grade parts used trackside.

  • Real Support, Real People

    Expert help during business hours.

  • Secure Shopping

    Encrypted checkout & trusted payments.

  • Fast U.S. Shipping

    Orders ship quickly from regional warehouses.

Main ST Collective 25 Pack Black Body Bolts – 3/8-16 x 1, 9/16" Hex Head Bolts – Rust Resistant Automotive Body Fasteners for Bumpers & Fenders - Compartible with GM# 3986997

AUT1000PK
In stock
$15.65
Black Hex Head Body Bolts (GM# 3986997) are engineered for strength, precision, and durability & making...
$15.65

Main ST Collective 25 Pack Black Body Bolts – 3/8-16 x 1, 9/16" Hex Head Bolts – Rust Resistant Automotive Body Fasteners for Bumpers & Fenders - Compartible with GM# 3986997

Black Hex Head Body Bolts (GM# 3986997) are engineered for strength, precision, and durability & making them an ideal choice for automotive bodywork. Each bolt is crafted from rugged steel and finished with black phosphate to resist corrosion and wear. Designed to OEM specifications, these automotive fasteners feature a 3/8"-16 thread, 1" length, and a 9/16" hex head with an integrated washer flange for optimal grip and surface protection. Whether you're replacing bumper hardware, installing fender fasteners, or restoring an entire vehicle, this 25-pack of GM body bolts delivers the quality and quantity you need to get the job done right.

Features:

  • 3/8-16 thread pitch for a secure hold
  • 1-inch bolt length for a standard fit
  • 9/16" hex head for easy wrench access
  • Integrated washer flange for even pressure distribution
  • Durable black phosphate coating
  • Rust- and corrosion-resistant
  • Built to OEM GM# 3986997 standards
  • Ideal for body panels, fenders, and trim
  • Pack of 25 for convenience and value
  • Great for both professionals and DIY mechanics
Read More
Read Less

Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

Your cart

×