Prime-Line 9091178 Serrated Flange Bolts, 3/8 in.-16 X 1-1/4 in., Zinc Plated Case Harden (25 Pack)

★★★★☆ 4.0 21 reviews

$32.14
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$32.14
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Free shipping Free 30-day returns

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Product details

Management number 213548703 Release Date 2026/04/12 List Price $12.86 Model Number 213548703
Category

Prime‑Line flange bolts provide strong, secure fastening with built‑in load distribution for a wide range of home repair and improvement projects. Designed with an integrated flange beneath the bolt head, these bolts help spread clamping force evenly, reducing the need for a separate washer and helping protect surfaces from damage. Ideal for automotive repairs, appliances, furniture assembly, lawn and garden equipment, and general mechanical applications, Prime‑Line flange bolts are intended for use with same‑size matching nuts to ensure proper fit and dependable holding power. Manufactured from quality materials for strength and durability, they install easily using standard tools and perform reliably in both indoor and outdoor environments. Trusted by DIY homeowners and professionals across the U.S., Prime‑Line flange bolts make it easy to achieve secure, efficient fastening with fewer parts and confidence.

  • Size: 3/8 inch-16 X 1-1/4 inch
  • Hex bolt with a serrated circular flange under the head
  • Flange eliminates need for separate washer
  • Serrations bite into surface and can help to prevent loosening
  • Designed for use with a nut (not included) or a threaded hole of the same diameter and thread size
UPC 049793166180
Brand PRIME-LINE
Color Zinc
Model 9091178
Set Name 25-Piece Set
Head Type Hex
Size Name 3/8 in. -16
Metal Type Alloy Steel
Unit Count 1.0 Count
Item Weight 0.01 Ounces
Part Number 9091178
Thread Size 3/8"-16
Thread Type Unc
Drive System External Hex
Finish Types Zinc Plated
Grade Rating Grade A
Manufacturer Prime-Line Products
Thread Class 2A
Thread Style Right Hand
Fastener Size 3/8"
Fastener Type Flange Bolt, Hexagon Bolt
Item Diameter 0.38 Inches
Item Hardness Grade 2A
Material Type Alloy Steel
Item Type Name Serrated Flange Bolt
Exterior Finish Zinc
Item Dimensions 5 x 5 x 5 inches
Thread Coverage Fully Threaded
Number of Pieces 25
Screw Head Style Hex
Manufacturer Grade Grade 2A
Included Components fasteners
Compatible Groove Diameter 0.38 Inches
Global Trade Identification Number 00049793166180

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