Precision Fasteners Built For High Load Engine And Chassis Applications
Factory grade bolts are engineered to a price point, not a performance target. ARP’s 5/16 inch -18 x 1.750 inch 12 point stainless steel bolts, MPN 612-1750, are manufactured from premium stainless steel and precision rolled after heat treatment for consistent, reliable clamping force in performance engine building and chassis fastening applications. Each package includes 5 bolts.
Key Features
- Premium stainless steel construction resists corrosion, MPN 612-1750
- 12 point head design for a secure wrench grip and cleaner tool clearance
- Threads rolled after heat treatment for consistent, reliable clamping force
Specifications
| Detail | Value |
|---|---|
| Brand | ARP |
| MPN | 612-1750 |
| UPC | 672036015725 |
| Thread Size | 5/16 inch -18 |
| Length | 1.750 inch |
| Head Style | 12 point |
| Material | Stainless steel |
| Quantity | 5 per package |
What’s Included
- 5 x ARP 5/16 inch -18 x 1.750 inch 12 point stainless steel bolts, 612-1750
About ARP
ARP manufactures premium fasteners engineered specifically for high stress automotive and racing applications, using aerospace grade materials and processes to deliver consistent clamping force under extreme loads.
Related Parts on Our Site
- Shop performance engine hardware
FAQ
What is the 612-1750?
The 612-1750 is a package of 5 ARP 5/16 inch -18 x 1.750 inch 12 point stainless steel bolts designed for high load engine and chassis fastening applications.
What thread pitch is the 612-1750?
These bolts use a 5/16 inch -18 thread pitch.
How many bolts come in this package?
Each package includes 5 bolts.
What material are these bolts made from?
The 612-1750 is manufactured from premium stainless steel for corrosion resistance and consistent strength.
What size wrench or socket do I need for a 12 point head?
A 12 point socket matched to the bolt’s head size is required, available from ARP or most tool manufacturers.
Are these bolts suitable for engine assembly?
Yes, ARP fasteners are widely used in performance engine building where consistent, reliable clamping force is critical.
Do these bolts require ARP fastener lubricant?
ARP recommends using ARP thread lubricant on all ARP fasteners to achieve accurate torque readings and proper clamp load.
Are these bolts reusable?
ARP stainless steel bolts can typically be reused if inspected for damage and properly re-torqued, unlike torque to yield factory bolts.








