TK93042 3/8" x 1.25" USS Coarse Thread USA Made Super Grade 8 Bolt

TK93042 3/8" x 1-1/4" USS Coarse Thread Super Grade 8 Hex Head Bolt For universal applications calling for an extra tough and durable fastener.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
Features and Specs
Matching Parts
Applications

Tech Note 1: Features and Specs
Features and Specifications:

• Made of Super Hi-tensile Quad-Alloy Steel
• Tensile strength: minimum 180,000 psi
• Greater hardness, strength, heat resistance, corrosion resistance, and overall durability than standard Grade 8 cap screws
• Controlled grain flow with washer face
• Double heat treated with 20% higher head
• Cold rolled, Class 2A Threads - machine pointed
• Rockwell hardness: C38-42
• Meets or exceeds SAE J429 and ASTM A354 Grade 8 specifications
• Hex Head with 9/16" across flats
• Thread Length 1-1/4"
• Plated for corrosion resistance
• Manufactured in America with American materials.
• Head Marking Grade Markings for ease of identification.
• Flats are easy to grip and corners resist rounding.
• 20% higher head than standard cap screws makes wrenching easier.
• 15° Top Chamfer higher corners for reduced socket wear.
• Smooth washer face bearing surface permits complete 360° load distribution while maintaining consistent clamping force.
• Smooth fillet radius design to increase fatigue strength and reduce stress concentration where the head and shank meet.
• Excellent elongation properties stretches a min. of 12% in a standard elongation test per J429.
• Concentric shanks for easy, accurate assembly.
• Chamferred points for easy starting and assembly.
• 100% traceable - each lot is laboratory tested to assure consistent quality material test reports available.
• Class 2 UNR threads are cold rolled, precision formed for increased clamping strength, better fit and reduced risk of failure.
• Trailing thread does not enter extrusion angle for increased stress resistance.

Tech Note 2: Matching Parts
Matching parts for TK93042 Hub Screws in 1975-1990 Dodge Dana 60, Dana 61 Axles:
XV101 Exploded View 1975-1989 Dodge Dana 60 Front Hub Related Parts and Tools
TK4037 Hub Service Kit
QU40068 Axle Shaft Snap Ring
QK4730 Hex Spindle Nut Set 1975-1991.5 Dodge W250, W350
QU11069 Wheel Hub 
QU40330 30 Spline Outer Axle Shaft
QU50277 New Selectro Hub Lock Set
QU50216 8 Bolt Hub Gasket
QU52245 Bare Selectro Hub Handle
QU50160 Hub Cam
QU52242 Bare 8 Bolt Hub Base

Applications
Universal