ASTM F1941 Fasteners Bolts Specification | ASTM F1941 Fasteners Bolts - ASTM F1941 Fasteners Bolts Techinical Information | ASTM F1941 Dimensions
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ASTM F1941 Fasteners

ASTM F1941


The ASTM F1941 specification covers several common electrodeposited coatings on threaded fasteners. The below chart details the various types of coatings, thicknesses, and optional chromates. This ASTM standard replaces ASTM B633 for electrodeposited threaded fastener coatings, since B633 was not written as a fastener specific standard.

Coating Designations

Designation Type
Fe/Zn Zinc
Fe/Cd Cadmium
Fe/Zn-Co Zinc Cobalt Alloy
Fe/Zn-Ni Zinc Nickel Alloy
Fe/Zn-Fe Zinc Iron Alloy

Coating Thickness

Designation Minimum Thickness, in.
3 00.0001
5 0.0002
8 0.0003
12 0.0005

Chromate Finish

Designation Type Typical Appearance
A Clear Transparent colorless with slight iridescence
B Blue-Bright Transparent with a bluish tinge and slight iridescence
C Yellow Yellow iridescent
D Opaque Olive green, shading to brown or bronze
E Black Black with slight iridescence
F Organic Any of the above plus organic topcoat

Note 1 – Coated fasteners with trivalent chromite (Cr+3) are not subjected to the required yellow, opaque and black color.
Note 2 – When fasteners are coated with trivalent chromite (Cr+3) the classification code shall be amended with the letter ‘T’

Fasteners Specification :


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Deliver Days Port Name
Malaysia 10 - 20 Days Port of Klang, Malaysia - Penang Port, Malaysia
Singapore 10 - 20 Days Northport , Malaysia - Westports, Malaysia
Thailand 20-30 Days Port of Laem Chabang, Thailand
Philippines 20-30 Days Port of Manila - Port of Jordan, Philippines
Indonesia 25-40 Days Jakarta Tanjung Priok Seaport indonesia
Sri Lanka 10-15 Days Port of Colombo


5-10 Days The Port of Chittagong (Bangladesh)
UAE 5-10 Days Port of Mina Jebel Ali (Jebel Ali - Dubai ) , United Arab Emirates & Port Zayed (Mina Zayed), United Arab Emirates
Saudi Arabia 10-20 Days Jeddah Islamic Port, Saudi Arabia
Turkey 20-30 Days Haydarpasa, Izmir and Mersin Port - Port of Ambarli, Turkey
Qatar 8 - 12 Days Port of Doha, Qatar & Port of Al Wakrah, Qatar
Oman 5 - 10 Days Port Of Sohar - Oman , Port of Muscat - Oman
Kuwait 8 - 15 Days Port of Kuwait, Kuwait
Yemen 8 - 15 Days Port of Aden, Yemen
Jordan 15 - 20 Days Port of Aqaba, Jordan
Cyprus 16 - 20 Days Famagusta Port, Cyprus


Countries Port
Deliver Days Port Name
Nigeria 35 - 40 days Tin Can Island Port Complex, Nigeria
Algeria 35 - 40 days Port of Alger, Algeria - Port of Bejaia, Algeria - Port of oran, Algeria - Port of ghazaouet, Algeria
Angola 35 - 40 days Port of Luanda, Angola
South Africa 20 - 30 days Port Elizabeth, South Africa
Libya 18 - 20 Port of Benghazi, Libya
Egypt 15 - 20 Days Port of Damietta, Egypt
Sudan 10-15 Days Port of Sudan, Sudan
Equatorial Guinea 35 - 40 days Port of Malabo, Equatorial Guinea - Port of Bata, Equatorial Guinea
The Republic Of Congo 35 - 40 days Port of Matadi, Congo - Kinshasa
Gabon 35 - 40 days Port of Owendo, Gabon

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