Grade 12.90 hex washer head bolt  

1. Standard of Grade 12.90 hex washer head bolt : ISO,JIS,GB,ANSI,BSW,DIN or non standard as customize 

2. Material :Carbon steel12.90

3. Dimension of Grade 10.9 hex washer head bolt : M4-M48

4. OEM&Customize non-standard products welcome.

5. Surface treatment::  zinc-plated,nickel plated,HDG,oxidation,painting,etc.  

6. Packing:General packing: Cartons + plastic bags+pallet or accoding to requirement

7. Delivery time: Within 7 days or based on your quantity.

8. Types:Various bolts  type available

Use the top grade raw material,Through ultrasonic flaw detection,chemical composition analysis,

Management Standard:
• ISO9001:2001 • ISO/TS16949

Finish Treatment:
• Zinc Clear, Zinc Yellow,
• Nickel-plating, in-plating, Chrome-plating,
• Dacromet, Black
• Mechanical Galvanizing
• Hot-dip Galvanizing etc. 

Material used:
• Carbon Steel • Alloy Steel
• Stainless Steel • Copper
• Aluminum • Brass

Thread Types:
• Typically metric coarse and metric fine
• British Standard Whitworth (BSW)
• British Standard Fine (BSF)
• Unified National Coarse (UNC)
• Unified National Fine (UNF)
• Unified National Series
• Coach screw thread form

Manufacturing

Portland Bolt manufactures hex bolts from 1/2" diameter through 2-1/2" diameter in most ASTM, AASHTO, and SAE specifications. Special tooling can be created to produce nonstandard head dimensions or bolt heads with your company's name and/or logo.

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