WhatSizeBolt

Search 100,000+ OEM fastener specs, torque settings, and part numbers.

Top vehicle makes

Toyota
Honda
Ford
Chevrolet
Nissan
Jeep
Ram
GMC
Hyundai
Subaru
Kia
Dodge

Reference guides & tools

Full Vehicle Directory
Lug Nut Torque Lookup
Bolt Size Chart (Metric & SAE)
Standard Torque Specs
Thread Pitch Chart
Bolt Head Markings
Caliper Bolt Torque
Suspension & Steering Torque
Axle Nut Torque Specs Chart
Wheel Hub Bolt Torque Chart

Popular guides & tools

Metric Bolt Torque Chart (8.8, 10.9, 12.9)
British Thread Standards: BSW, BSF & BA
Briggs & Stratton Engine Torque Specs
Copper vs Nickel Anti-Seize Guide
Kohler Engine Torque Specs
Blue vs Red Threadlocker Guide
Do Lock Washers Actually Work?
Honda GX Engine Torque Specs
Torque Converter (in-lb, ft-lb, N-m)
Torque Wrench Sizes: Inch-Pounds vs Foot-Pounds

Small engines, heavy machinery & guides

Small Engine Fasteners
Heavy Machinery Fasteners
Knowledge Hub
Free Downloads
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Start with your task

Choose the task, then confirm the exact application and source before installation.

Check wheel hardware and torque →Match the wheel, nut or bolt, seat type and exact vehicle.
Identify a caliper fastener →Guide pin and bracket bolts need different application-specific specifications.
Find axle-nut guidance →Check the listed year range, axle and nut replacement conditions.
Read a bolt size →Compare metric and SAE diameter, pitch and head dimensions.
Choose a socket →Compare head dimensions. Socket fit does not identify thread size.
Identify a drain plug →Distinguish the head, thread and seal. Confirm the actual application.
Find an exact vehicle spec →Review the available source for each field. Missing evidence stays unknown.
Find small-engine specs →Match equipment and engine model. Engine brand alone is not enough.

Home Vehicle Database All Vehicles & Pages Bolt Size Chart Standard Torque Specs Bolt Head Markings Thread Pitch Guide Knowledge Hub Lug Nut Torque Lookup Small Engine Fasteners Heavy Machinery Fasteners Free Downloads About Metric torque chart Standard torque reference Bolt measurement guide Oil-drain guide