Black Zinc Plating alludes to the shade of the chromate that is connected amid the post plating process. It incorporates a layer of zinc connected to a sections surface pursued by dark chromate connected over the zinc.

Black Zinc is normally indicated for its dim appearance and defensive properties. Dark chromate offers extra erosion insurance by ensuring the zinc plating and furthermore gives a dull to profound dark appearance relying upon the surface state of the part.

 

Benefits of Choosing Black Zinc

Black Zinc is an electrically conductive finish and offers superior corrosion protection over black oxide. Since the typical thickness is minimal, ranging from .0002” to .0006” it is also a good alternative to powder coat or e-coat for parts with tight dimensional tolerances.

• Minimize a parts visibility in a final assembled product.
• Disguise recessed lighting components.
• Common in automotive applications to camouflage components under the hood or seats.
• Cosmetic purposes requiring a uniform black finish

 

Considerations

Black Zinc is an effective finish that provides excellent cosmetic benefits to most parts however it is not suitable for every application.

It is common to notice the color change from deep black to greenish-brown as the finish breaks down over time. Because of this color change, Black Zinc may not be the right finish for highly visible components with strict cosmetic requirements.

The appearance can also become compromised on parts requiring a sealer often producing streaks or a dull gray appearance, most noticeable on large flat components.

 

TYPES OF BOLTS

12 Point Flange Bolt	Round Head Bolts	Carriage Bolts	Flange Bolts
Structural Bolts	Tension Indicating Bolts	Heavy Hex Cap Screws & Heavy Hex Bolts	Square Head Bolts
U-Bolts	Serrated Flange Bolts	Plow Bolts	Hanger Bolts
Elevator Bolts	Eye Bolts	Tension Control Bolts	Connector Bolts
Tower Bolts	Penta Head Bolts	Step Bolts	Coil Bolts
J-Bolts	Sidewalk Bolts	Timber Bolts	Bin Bolts
U-Bolt Plates	Track Bolts	Hurricane Bolts	Draw Bolts
Lag Bolt	Stove Bolt	Machine Bolt	Tap Bolt
Shoulder Bolt	T Head Bolts	Screw Thread Eye Bolts	Square U Bolts
Through Bolts	Toggle Bolts	Torx Bolts	Wing Bolts
Bent Bolts	Banjo Bolts	Anchor Bolts	Allen Head
Threaded Rod	Turned Eye Bolts	socket head Bolts	Wheel Bolts
Cable Reel Bolts	Button Head Bolts	Bolt Caps	Tee Hammer Bolts
Fish Bolts	Castle Tap Bolts	Counter Sunk Bolts	Deck Bolts
Eye Bolts Without Shoulder	Forged Hook Bolts	Freight Car Bolts	Shoulder Eye Bolts
Hex Head Hollow Bolts	Hex Flange Bolts	Hex Head Bolts	Hollow Allen Head Bolts
Stud Bolts	Lifting Eye Bolt	Long Bolts	Jack Bolt
Rod Ends Bolts	Roofing Bolts

 

OTHER TYPES OF BOLTS

Stainless Steel Bolts :
AISI 302, 304, 304L,316, 316L, 310, 317, 317L, 321, 347, 410, 420,904L etc.

Duplex & Super Duplex Steel Bolts :
ASTM / ASME A815 UNS No. S31803, UNS No. S 32205, UNS No. S 31254, UNS No. S 31550, UNS No. S 32750, and UNS No. S 32760

Carbon Steel Bolts :
ASTM A307, A193

Alloy Steel Bolts :
ASTM / ASME A/SA 193 / 194 B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M

Nickel Bolts Alloy Bolts :
ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 UNS 2200 (Nickel Bolts 200) / UNS 2201 (Nickel Bolts 201), UNS 4400 (MONEL 400), UNS 8825 (Inconel 825), UNS 6600 (Inconel 600) / UNS 6601 (Inconel 601), UNS 6625 (Inconel 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)

 

Bolts Material & Grade

Stainless Steel Bolts

 

Carbon Steel Bolts

 

Alloy Steel Bolts

 

Inconel Bolts

 

Monel Bolts

 

Hastelloy Bolts

 

Titanium Bolts

 

Stock Of Bolts As Per ASTM Specification

 

Bolts As Per DIN Specification

 

 

COATINGS