42CRMO

SpecificationMaterialNominal Size, In.Tempering Temp. °FProof Load Stress, ksiHardness RockwellSee NoteMinMaxASTM A194 Grade 2Medium Carbon Steel1/4 - 401501593521,2,3ASTM A194 Grade 2HMedium Carbon Steel, Quenched and Tempered1/4 - 4850175C24C381,2ASTM A194 Grade 2HMMedium Carbon Steel, Quenched and Tempered1/4 - 411501501592371,2,3ASTM A194 Grade 4Medium Carbon Alloy Steel, Quenched and Tempered1/4 - 41100175C24C381,2https://qbfastener.en.made-in-china.com/ASTM A194 Grade 7Medium Carbon Alloy Steel, Quenched and Tempered1/4 - 41100175C24C381,2ASTM A194 Grade 7MMedium Carbon Alloy Steel, Quenched and Tempered1/4 - 411501501592371,2,3ASTM A194 Grade 8Stainless AISI 3041/4 - 4-801263004ASTM A194 Grade 8MStainless AISI 3161/4 - 4-801263004 

NOTES:

The markings shown for all grades of A194 nuts are for cold formed and hot forged nuts. When nuts
are machined from bar stock, the nut must additionally be marked with the letter 'B'. The letters H
and M indicate heat treated nuts.
Properties shown are those of coarse and 8-pitch thread heavy hex nuts.
Hardness numbers are Brinell Hardness.
Nuts that are carbide-solution treated require additional letter A - 8A or 8MA.
All nuts shall bear the manufacturer's identification mark. Nuts shall be legibly marked on one face
to indicate the grade and process of the manufacturer. Marking of wrench flats or bearing surfaces
is not permitted unless agreed upon between manufacturer and purchaser.
Other less common grades exist, but are not listed here.

Certifications & Package

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Our general manager has been engaged in the export of fasteners since 2005. 
Our team can provide you with professional fasteners selling and smooth export services.

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High quality products with reasonable price. Please give me a inquire, We will quoted you a price for you 
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3. How do you control your quality?
We require the quality control department to inspect every production link of each shipment. And we can provide you MTC and mill certificate when the goods is finished.

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General speaking, if the goods is in stock, we can delivery them with 2-5days, If the quantity is 1-2container, we can give you with 18-25days,if the quantity is more than 2 container and you are very urgent, we can let factory priority produce 
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5.What is your packing?
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallets is about 900-960kg, We also can make customer's logo on the cartons. Or we customized cartons according to customers' 
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