Harmonic Balancer Bolt & Pulley Bolt Kit Fit for Big Block Chevy 366/396/402/427/454 Engines (1965-1972) - Grade 8 Steel Hardware Set
Product details
| Management number | 233913173 | Release Date | 2026/06/27 | List Price | $5.40 | Model Number | 233913173 | ||
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| Category | |||||||||
This heavy-duty bolt kit provides essential hardware fit for Big Block engines (366/396/402/427/454) from 1965-1972. The set includes a Grade 8 steel harmonic balancer bolt (1/2"-20 threads) with matching washer and lock washer. With 1.500" under head length and 3/4" hex head, these bolts offer reliable performance for your engine's harmonic balancer and pulley system.
- Complete bolt kit - Includes high-grade harmonic balancer bolt, washer, and lock washer for secure installation.
- Precision fitment - Designed specifically fit for 1965-1972 Big Block engines (366, 396, 402, 427, 454).
- Heavy-duty construction - Features Grade 8 steel hardware with 1/2"-20 threads for maximum strength and durability.
- Proper dimensions - 1.500" under head length with 3/4" hex head and 1/4" thick washer for correct fitment.
- Installation note - May not fit aluminum pulleys - please verify your pulley type before purchase.
| ASIN | B0F6T3XKR2 |
|---|---|
| Brand | HUDEX |
| Model | LSOT001053-A-US5-FBA |
| Set Name | Set |
| Head Type | Hex |
| Size Name | 1/2-20 |
| Metal Type | Alloy Steel |
| Unit Count | 1.0 Count |
| Part Number | / |
| Thread Size | 1/2"-20 |
| Thread Type | Unc |
| Drive System | Rear-Wheel Drive |
| Finish Types | Painted |
| Manufacturer | HUDEX_DIRECT |
| Thread Class | 3A |
| Thread Style | Right Hand |
| Fastener Size | 1/2"-20 x 1.500" |
| Fastener Type | Hexagon Bolt |
| Item Diameter | 0.5 Inches |
| Item Hardness | Grade 8 |
| Material Type | Grade 8 Steel |
| Exterior Finish | Painted |
| Number Of Items | 1 |
| Thread Coverage | Fully Threaded |
| Screw Head Style | Hex |
| Screw Point Style | Flat Point |
| Manufacturer Grade | heavy-duty |
| Included Components | A Set of Harmonic Balancer Bolt Kit |
| Warranty Description | 1 |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Compatible Groove Diameter | 1.5 Inches |
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