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SAE AS 7252A-2015 (SAE AS7252A-2015)
Nuts, Self-Locking, Steel High Strength, All Metal 450 °F Use, UN and UNJ Thread Form
This specification covers all metal, self-locking wrenching nuts, plate nuts, shank nuts, and gang channel nuts made of a carbon or low alloy steel.
Society of Automotive Engineers [sae]