Choose from our selection of L9 bolts, including hex head screws, socket head screws, and more. Same and Next Day Delivery.

Explore L9 bolts and fasteners at RC Fasteners, including high-tensile-strength bolts, nuts, and washers. Perfect for automotive, aerospace, and construction.

The Grade 9 Bolting system develops the highest clamp force available in a standard bolt/nut assembly and it is frequently referred to by one of the folowing trade names: L9, PFC9, or F911. Special Alloy steels and heat treatments are used to achieve 180,000 psi tensile strength.

May 19, 2022 · L9 fasteners are characterized by an L9 Society of Automotive Engineers (SAE) grade. The SAE has a grading system for fasteners, including hex cap screws. Some hex cap screws have a grade 2.

L9 fasteners are ideal for high stress, demanding environments. We supply Grade L9 fasteners in a range of sizes to meet your specific application requirements. Our fasteners feature a Zinc Yellow CR+3 plating finish that assists in torquing while providing improved corrosion resistance.

These charts helps to identify the grades of bolts using the identification marks on the bolt's head along with the strength and hardness of common grade bolts. Please note the bolt heads may also include the manufacturer's identification stamp, especially with high strength bolts.

Discover our L-9 Ultra High-Strength Fasteners collection, featuring Hex Bolts, Collar Locknuts, Hex Nuts, and Washers (SAE & USS). Made in the USA from premium alloy steel with 180,000 psi tensile strength. Ideal for automotive, aerospace, and …

Grade 9 Hex Head Bolts. L9 Zinc yellow plated. Made in the USA. 180,000 psi tensile strength.

Choose from our selection of L9 hex head cap screws, including over 70 products in a wide range of styles and sizes. Same and Next Day Delivery.

Monroe offers L9 Hex Cap Screws, L9 Hex Nuts, L9 Collar Locknuts, L9 USS Tension Flat Washers, and L9 SAE Tension Flat Washers with imperial threads. Each L9 product is proudly made in USA and is perfect for whatever your industrial or manufacturing needs may be.