Finishes and Plating Guide
Regulation / Directive Conformance
Thread Specifications
Standard Finish Summary
The following summary is brief description Lyn-Tron's standard finish summary. The document is organized with the Lyn-Tron's Plate Code proceeded by the standard Lyn-Tron plating name and a brief explanation of the finish. The Lyn-Tron Plate Code is represented as numeric/alphanumeric value and is between two and three characters long. The plate code will always be listed at the end of the Lyn-Tron part number.
Please click on the finish name link below to review the suggested material that the selected finish can be applied to.
Anodize
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Acid Electrolyte treatment which penetrates the metal and builds up
-
Rough-etched appearance, hard oxide surface
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Applied on aluminum
-
Excellent corrosion and abrasion resistance
-
Non-conductive
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 08 | Clear Chromic Acid Anodize | | |
| 09 | Red Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 10 | True Green Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 101 | Blue Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 102 | Gold Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 103 | Violet Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 104 | Pink Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 105 | Orange Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 11 | Dark Grey Anodize | Type I | Chromic 0.5?-7.6? |
| 111 | Dark Grey Anodize | Type II | Sulfuric 1.8?-25.4?|| Mil-A-8625 Rev F |
| 12 | Clear Anodize | Type II Class 1 | MIL-A-8625 Rev F |
| 121 | Hard Clear Anodize | Type III Class 1 | MIL-A-8625 Rev F |
| 14 | Black Anodize | Type II Class 2 | MIL-A-8625 Rev F |
| 141 | Hard Black Anodize | Type III Class 2 | MIL-A-8625 Rev F |
| 15 | Clear Semi-Frost Anodize | Type II | MIL-A-8625 Rev F |
| 16 | Black Semi-Frost Anodize | Type II | MIL-A-8625 Rev F |
| 17 | Clear Satin Anodize | Type II | MIL-A-8625 Rev F |
| 18 | Black Satin Anodize | Type II | MIL-A-8625 Rev F |
| 19 | Black Bright Anodize | Type II | MIL-A-8625 Rev F |
| 20 | Clear Bright Anodize | Type II | MIL-A-8625 Rev F |
Bright Dip
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An Acid bath etching process
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Used on brass parts
-
Process removes any metal particulate that may be on the part
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 03 | Bright Dip | | ASTM B 281 |
| 04 | Hot Dip Galvanize | | ASTM A153C |
Cadmium
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Cadmium can be electroplated on most metals
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It is commonly used on brass and steel
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Appearance is typically bright
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Lyn-Tron offers a type II with a supplementary chromate treatment
-
Cadmium offers excellent corrosion protection
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It offers excellent protection in marine environments
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Should not be exposed to continuous temperatures of over 150 degrees F.
-
Non magnetic and cannot be soldered
-
This plating has been used as a suitable alternative to E-nickel or zinc plating
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 31 | Clear Cadmium | Type I Class 2 | SAE-AMS QQ-P-416 |
| 311 | Yellow Cadmium | Type II Class 3 | SAE-AMS QQ-P-416 || .0002 Per Side |
| 31H | Clear Cadmium Heat Treated | | SAE-AMS QQ-P-416 |
| 32 | Yellow Cadmium | Type II Class 2 | SAE-AMS QQ-P-416 |
| 32H | Yellow Cadmium Heat Treated | | SAE-AMS QQ-P-416 |
Caustic Etched
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An acid bath process primarily used on aluminum
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Typically finished with an Anodized plate
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 02 | Caustic Etch | | |
Chemical Film
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This process is used on RoHS aluminum
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Parts are dipped in a chemical
-
Process makes no dimension changes in the part
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It offers good corrosion resistance and is electrically conductive
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Abrasion resistance is poor with this finish
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Common brand names are Iridite and Alodine.
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Lyn-Tron uses 14-2 Iridite. This finish is gold unless otherwise requested.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 21 | Clear Iridite | Class 3 | MIL-DTL-5541F |
| 211 | Clear Iridite | Type 1 Class 3 | MIL-DTL-5541F |
| 22 | Gold Iridite Class | 1A | MIL-DTL-5541F |
| 221 | Gold Iridite Class 3 | | |
| 222 | Gold Iridite - Honeywell Approved | Class 1A | MIL-DTL-5541 Rev F |
| 223 | Gold Iridite - Honeywell Approved | Class 3 | M690278-2 MIL-C-5541 Rev F |
| 24 | Blue Iridite | | |
| 25 | Clear Iridite | Class 3 (RoHS) | MIL-DTL-5541F |
| 25H | Clear Iridite | Class 3 (RoHS) with Heat Treat | MIL-DTL-5541F |
| 25P | Clear Iridite | Class 3 (RoHS) with Nylon Patch | MIL-DTL-5541F |
| 26 | Gold Iridite Class 1A (RoHS) | | |
Chrome
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Chrom is a technique of electroplating a thin layer of chromium onto a metal object
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The chromed layer can be decorative, provide corrosion resistance, ease cleaning procedures, or increase surface hardness
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 71 | Chrome | Bright | |
| 72 | Chrome | Satin | |
| 73 | Chrome/Electroless Nickel | | |
Copper / Nickel / Bright Tin
-
Copper plating is primary used as an undercoat to improve adhesion and to prevent impurities forming on the base metal and migrating through.
-
Can affect solderability.
-
Can be done to most metals
-
Offers only fair resistance to corrosion
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 48 | Copper/Nickel/Bright Tin | | |
| 48H | Copper/Nickel/Bright Tin + Heat Treated | | |
Electro Tin
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Electroplated tin provides very good resistance to corrosion.
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When applied to a proper thickness this finish meets a 24 hour 20% salt spray requirement.
-
Can be soldered
-
Is ductile
-
Available either bright or dull finishes
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Bright tin looks cosmetically better then dull tin and has better corrosion resistance. When exposed to low temperatures (-40° F) this finish changes structure and loses adhesion.
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The expected shelf life of Electro Tin is approximately six months from the date plated. To ensure maximum shelf life -- parts should be sealed in an airtight container with desiccant.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 42 | Electro Tin - Dull | Type II | ASTM B 545-97 || Tin Matte .0002-.0003 || Copper Flash .0001 Min. |
| 42H | Electro Tin - Dull Heat Treated | Type II | ASTM B 545-97 || Tin Matte .0002-.0003 || Copper Flash .0001 Min. |
| 42R | Electro Tin with Red Wax | | MIL-T-10727 |
| 43 | Electro Tin - Bright | Type I | ASTM B 545-97 || Bright Tin .0002-.0005 || Copper Strike .0001 Min. |
| 431 | Electro Tin - Bright | | .0001 CU flashing under plating with bright tin |
| 43H | Electro Tin - Bright + Heat Treat | Type I | ASTM B 545-97 || Bright Tin .0002-.0005 || Copper Strike .0001 |
| 44 | Electro Tin - Solder | AMS-P-81728A | Solder Tin-Lead .0002-.0005 || 60/40 Copper Flash || .0001 Per MIL-C-14550B Class 4 |
| 44H | Electro Tin - Solder | Heat Treat | Solder Tin-Lead .0002-.0005 || 60/40 Copper Flash || .0001 Per MIL-C-14550B Class 4 |
| 44R | Electro Tin | Solder | F50HD11(A) - EML Red Wax |
| 4A | Electro Tin - Bright | .0002-.0004 | Tin .00002 CU |
Finishing Process
-
The finished product of finishing process
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 00 | Unplated | | |
| 00D | Unplated - 202 Thread Lock Dri Loc | | IFI 125 / 525 |
| 00F | Nylon Strip (Fill) | | |
| 00H | Heat Treat - Unplated | | |
| 00M | Unplated -MCM | | |
| 00P | Nylon Patch - Unplated | | |
| 00Q | Nylon Pellet - Unplated | | |
| 00S | Marking Stamp - Unplated | | |
| 01D | Passivate - #202 Thread Lock Dri Loc | | IFI 125 / 525 |
| 74 | Brushed Aluminum | | |
| 89 | Electropolish | High Luster BRIGHT | HPS 124 Type 1 |
| 99 | Rust Inhibitor | | |
| 99T | Rust Inhibitor + Carburize .005-.010 to HRC 35-42 | | |
Gold
-
Gold plating is a method of depositing a thin layer of gold onto the surface of another metal, most often copper or silver, by chemical or electrochemical means
-
Mechanical or chemical affixing of thin gold foils onto the surface of objects is instead known as gilding
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 94 | Gold (.00005/.00007) | | MIL-G-45204, CL 1, Type II |
| 96 | Gold (.00005 - .0000315) / Nickel Flash | | |
| 97 | Gold (.00002 Min) | | MIL-G-45204, Type II |
| 98 | Hard Gold over Nickel with Copper Strike | | |
Nickel
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Nickel provides a silver finish and can be plated on most metals
-
Offers very good resistance to corrosion
-
Can deposited in either a soft or hard finish (dull or bright)
-
Corrosion resistance is a function of plate thickness
-
Some forms of this finish may be slightly magnetic.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 61 | Nickel | | AMS-QQ-N-290 Rev B |
| 61P | Nickel w/ Patch | | AMS-QQ-N-290 Rev B |
| 62 | Black Nickel | | NYSTAN Over .0001 Copper |
| 63 | Ductile Nickel - Class 1 | Grade G | SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4 |
| 634 | Sulfamate Nickel | Type II Class 10 | ASM B 687-97 |
| 63H | Ductile Nickel + Heat Treat | Class 1 - Grade G | SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4 |
| 63P | Ductile Nickel with Nylon Patch | Class 1 | SAE-AMS-QQ-N-290 || Copper Flash MIL-C-14550 Class 4 |
| 64 | Nickel without Copper Under Plating | | QQ-N-290 A .0002 Min. |
| 65 | Bright Nickel Over Copper Flash | | AMS-QQ-N-290 Rev 3 || Copper Strike |
| 66 | Electroless Nickel | | AMS-C-26074 Rev B |
| 661 | Nickel - Molex | | |
| 66P | Electroless Nickel with Nylon Patch | | |
| 81 | Black Chrome/Chromium/Nickel | | |
Nylon Dye
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A dye can generally be described as a colored substance that has an affinity to the substrate to which it is being applied
-
The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 83 | Black Dye | | |
| 84 | Blue Dye | | |
| 85 | Red Dye | | |
| 86 | Green Dye | | |
| 87 | Grey Dye | | |
Oxide
-
Finish is mostly decorative
-
Has limited corrosion protection in mild conditions
-
Dimensional changes are immeasurable.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 50 | Black Oxide | Steel | MIL-C-13924 |
| 50H | Black Oxide - Steel - Heat Treated | Class 1 | MIL-C-13924 |
| 50P | Black Oxide - Steel with Nylon Patch | Class 1 | MIL-C-13924 |
| 51 | Black Oxide - Brass | | MIL-F-495 |
| 51W | Black Oxide - Wax Coating | Brass | MIL-F-495 |
| 52 | Black Oxide - Stainless Steel | Class 4 | MIL-C-13924C |
| 521 | Black Oxide after Passivate | Stainless Steel | |
| 522 | Black Oxide after Passivate with Heat Treat | SS | |
| 52W | Black Oxide - Wax Coating | Stainless Steel | |
Passivate
-
Chemical treatment used on Stainless Steel
-
Process makes no dimension changes in the part
-
Treatment removes iron particles and creates an etched passive surface. (Nitric acid -- dissolve's iron)
-
Process purifies the surface and improves corrosions resistance.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 01 | Passivate | | ASTM-A967-05 |
| 011 | Passivate (Nitric) | | ASTM-A967-05 |
| 012 | Passivate with 96 Hour Salt Spray | | MIL-F-14072-E300 / MIL-STD-202 |
| 013 | Passivate IAW AMS2700 | | Method 1, Type 2 or 8 |
| 01E | Passivate with Electro Polish | | ASTM-A967-05 |
| 01H | Passivate + Heat Treat | | ASTM-A967-05 |
| 01M | Passivate - MCM | | |
| 01P | Passivate with Nylon Patch | | ASTM-A967-05 |
| 01Q | Passivate with Nylon Pellet | | ASTM-A967-05 |
| 01S | Passivate with Marking Stamp | | ASTM-A967-05 |
| 01Y | Passivate Honeywell Approved | | 14072-E300 |
| 06 | Passivate | Type II | SAE-AMS QQ-P-35C |
Silver
-
This is an expensive finish
-
Provides excellent electrical conductivity
-
Soft and solderable.
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 91 | Silver | | QQ-S-365 || .0001 Silver |
| 92 | Silver/Nickel | | ASTM B700 QQ-S-365 || .0001 Silver / Nickel |
Zinc
-
Corrosion resistant
-
Conductive
-
Inexpensive
-
Can be applied in a wide range of thickness
-
In time this finish will weather and turn to a drab gray color
| Plate Id |
Description |
Type/Class |
Plate Specs |
| 33 | Black Zinc | Type II SC1 0.0002 | ASTM B633-98 || FE/ZN 5 |
| 34 | Zinc Clear Chromate | Type III | ASTM-B633 Rev 7 |
| 341 | Zinc Clear No Chromate | Type 1 Class 2 | ASTM B 633 Type 1 SC2 .0003 Min |
| 342 | Zinc Clear Chromate | Type III | ASTM B 663 Type 3 SC3 .0005 Min. |
| 343 | Zinc Clear | Type3 SC3 (72hr salt) | ASTM B 633 Type 3 SC3 (72hr salt) |
| 345 | Zinc Clear | Type3 SC2 (bake after plate) | ASTM B 633 Type 3 SC2 (.0003 min.) |
| 347 | Zinc Clear | Type3 SC2 (96hr salt) | ASTM B 633 Type 3 SC2 (96hr salt) |
| 34BP | Zinc Clear Nylon Patch - Blue - Type III | | ASTM-B633 Rev 7 |
| 34H | Zinc Clear Heat Treated | Type III | ASTM-B633 Rev 7 |
| 34P | Zinc Clear Nylon Patch | Type III | ASTM-B633 Rev 7 |
| 35 | Zinc Clear -No Chromate | Type i | ASTM-B633 Rev 7 |
| 35P | Zinc Clear with Nylon Patch | Type i | ASTM-B633 Rev 7 |
| 36 | Zinc Yellow Chromate | Type II | ASTM-B633 Rev 7 |
| 363 | Zinc Yellow Chromate | Type II SC3 (0.0005) | ASTM B663 Type 3 SC3 |
| 36H | Zinc Yellow Heat Treat | Type II | ASTM-B633 Rev 7 |
| 36P | Zinc Yellow Nylon Patch | Type II | ASTM-B633 Rev 7 |
| 37 | Zinc Yellow (RoHS) | | ASTM-B633 Rev 7 |
| 37P | Zinc Yellow (RoHS) Nylon Patch | | ASTM-B633 Rev 7 |
| 37YP | Zinc Yellow (RoHS) | | ASTM-B633 Rev 7 |
| 38 | Black Zinc (RoHS) | | |
| 53 | Black Zinc/Copper | | |
| 53P | Black Zinc/Copper Strike Nylon Patch | | |
| 54 | Black Zinc/Copper Strike (RoHS) | | |
| 55 | Nickel/Copper Strike( .0001) - Steel | | |
| 56 | Black Zinc/Nickel Strike | | |
| 575 | Magni - 575 Black | | Special magni-575 process |
| 80 | Zinc Yellow Leach Back Bronze | | |