The most commonly available aircraft-spec bolts: these hex head, fine threaded fasteners have a minimum tensile strength of 125,000 psi and a minimum shear strength of 75,000 psi. Length of thread is consistent within each diameter, and grips (unthreaded shank) are available in 1/8" increments beginning at 1/16". Vastly superior to "Grade 8" tension bolts for almost all shear-type, race car chassis applications.

These fine-threaded, dimpled-head hex bolts have a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. Thread length is consistent within each diameter (1103/6203 series have a shorter thread), and grips are available in 1/16" increments beginning at 1/16". Used in applications where a premium-quality, high strength bolt is necessary.

These fine-threaded, dimpled-head hex bolts have a minimum tensile strength of 160,000 psi and a minimum shear strength of 95,000 psi. Thread length is consistent within each diameter (1103/6203 series have a shorter thread), and grips are available in 1/16" increments beginning at 1/16". Used in applications where a premium-quality, high strength bolt is necessary.

These fine-threaded, twelve-point head bolts have a minimum tensile strength of 180,000 psi and a minimum shear strength of 108,000 psi. Thread length is consistent within each diameter and standard grips are in 1/8" increments beginning at 1/8". These bolts also have a large radius between the bolt head and shank for additional strength. This requires the use of the MS 20002C series beveled washer under the head. A "Superbolt" for the most demanding applications. Please note that "odd" grips, i.e. –15, –23, etc., are not standard and may not always be available. Please inquire for specifics.

Used where construction necessitates the use of an internal wrenching (Allen hex socket) bolt, they are fine-threaded with a minimum tensile strength of 160,000 psi and a minimum shear strength of 96,000 psi. Standard grips are in 1/8" increments beginning at 1/8". Like the NAS 624 series, they require the use of the MS 20002C beveled washer under the head. Another alternative for critical or limited access applications. PLEASE NOTE THAT HEAD BASE DIAMETERS AND HEAD HEIGHTS ON TWELVE-POINT HEAD AND INTERNAL WRENCHING BOLTS ARE IDENTICAL. Note also that like 12 point bolts, "odd" grips are not standard and may not always be available. Please inquire for specifics.

Made from A286 stainless steel alloy, rated for 1200°F operation. Minimum tensile strength is 160,000 psi; minimum shear strength is 95,000 psi. The brake hat bolt of choice for all serious race cars. Note: the accompanying charts may be used for grips and lengths on NAS6203 series also; they are identical.

These are fully threaded (UNF) 100° flat head screws with a torq-set drive recess; 160,000 psi tensile strength. Used where high strength, a large head area and a positive drive are required (wings, undertrays, etc.). We also stock the drive tools and mating Tinnerman washers.

The bolts described above represent over 80% of current and race car chassis usage. However, there are many other configurations and materials available under MS and NAS part numbers: contact us with your requirements and we can make a recommendation and provide technical details. Contact us for information on custom configurations.