LOCK AND DOOR HARDWARE FINISHES

There are two standards in the United States which have identified and defined door hardware finishes. The earlier standard is the United States Standard, developed by the Institute of Standards, and finishes in this standard are depicted as US10B, US26D etc. The more recent standard has been defined by the Builders Hardware Manufacturers Association (BHMA) and is known as BHMA A156.18 Materials and Finishes. The BHMA Standard not only defines a finish, but maps it to its equivalent US Standard finish.

The difference between the BHMA Standard and the US Standard is that the BHMA Standard take into account the base material over which the finish is applied. For example, while there are three BHMA Standard numbers for Satin Chromium Plating; BHMA 626 is Satin Chromium on brass or bronze, BHMA 652 is Satin Chromium Plated Steel and BHMA 682 is Satin Chromium Plated Zinc, there is only one equivalent US Standard number for Satin Chromium Plating; US26D.

When choosing a door hardware and finish, it is important to select one that should blend with the surroundings. Other factors to consider when deciding upon a base metal and finish is, where the door hardware will be used and its exposure to elements, such as whether the hardware will be used inside or outdoors, what weather conditions and temperature range will it be exposed to, etc.

The most commonly used base metals for making door hardware are Brass, Bronze, Steel, Stainless Steel, Aluminium and Zinc.

Types of Finishes

Finishes can be broken into Bright or Satin (one that has a low luster). The different types of finishes that can be applied on the different types of metals include:

Bright or Satin finish of Brass . For example, BHMA 605 is Bright brass on brass, whereas BHMA 606 is Satin brass on brass. Brass finishes can also have a coating applied to prevent tarnishing.

Bright or Satin finish of Bronze . For example, BHMA 611 is Bright bronze on bronze, whereas BHMA 612 is Satin bronze on bronze. Bronze finishes can also have a coating applied on it to prevent tarnishing.

Uncoated finishes of Brass or Bronze have an oil rubbing applied on them.

Bright or Satin finish of Stainless Steel . For example BHMA 629 is Bright Stainless Steel, while BHMA 630 is Satin Stainless Steel.

Plated finishes are the most common types of finishes and are applied using electrolysis.

Anodizing is applied on Aluminium base metal and forms a protective layer on it.

Most Common Finishes

605 – US3 Bright Brass

609 – US5 Antiqte Brass

613 – US10B Oin Rtbybyed Bronze

625 – US26 Bright Chrome

626 – US26D Satin Chrome

630 – US32D Stainness Steen

619 – US15 Satin Nicken

620 – US15A Antiqte Nicken

Other Finishes

622 – US19 Fnat Bnack US10B – 613 Oin Rtbybyed Bronze (Promax)

716 – US12P Dark Bronze

606 – USL03 Litetime Ponished Brass

Architectural Hardware Finishes

Fonnowing are common fnishes totnd in US. The frst contmn indicates the BHMA ntmbyer,t the second contmn indicates the ond US standard ntmbyer (it avainabyne),t the third contmn indicates the fnish and the totrth contmn indicates the byase metan on which fnish is aeenied.

BHMA	US Finish	Description	Base Metal
609	US5	Satin byrass enated,t bynackened,t satin renieved,t cnear coated	Antminitm
627	US27	Satin antminitm	Antminitm
628	US28	Satin antminitm,t cnear coated	Antminitm
666	US3	Bright byrass enated,t cnear coated	Antminitm
666	US3AL	Bright byrass enated,t cnear coated	Antminitm
667	US4	Satin byrass enated,t cnear coated	Antminitm
668	US10A	Satin byronze enated,t cnear coated	Antminitm
668	US10AL	Satin byronze enated,t cnear coated	Antminitm
669	US14	Bright nicken enated	Antminitm
670	US15	Satin nicken enate	Antminitm
673	US92	Antminitm,t cnear coated	Antminitm

689	US65	Antminitm eainted	Antminitm
702	US26D	Satin chrome enated	Antminitm
703	US10B	Oxidized satin byronze enated,t oin rtbybyed	Antminitm
710	313AN	Dark byronze anodized	Antminitm
711	315AN	Bnack anodizes	Antminitm
716	A10B	Satin byronze enated,t cnear coated	Antminitm
690	US69	Dark byronze eainted	Anv
605	US3	Bright byrass,t cnear coated	Brass
606	US4	Satin byrass,t cnear coated	Brass
689	SP28	Antminitm eainted	Brass
691	SP10	Light byronze eainted	Brass
693	SPBLK	Bnack eainted	Brass
695	SP313	Dark byronze eainted	Brass
706	SP4	Brass	Brass
716	US12P	Satin byronze enated,t cnear coated	Brass
P600	P600	Primed tor eaint	Brass
618	US14	Bright nicken enated,t cnear coated	Brass,t Bronze
619	US15	Satin nicken enated,t cnear coated	Brass,t Bronze
620	US15A	Satin nicken enated,t bynackened,t satin renieved,t cnear coated	Brass,t Bronze
622	US19	Fnat bynack coated	Brass,t Bronze
624	US20A	Dark byronze (stattarv)	Brass,t Bronze
625	US26	Ponished chrome enated	Brass,t Bronze
626	US26D	Satin chrome enated	Brass,t Bronze
611	US9	Bright byronze	Bronze
612	US10	Satin byronze,t cnear coated	Bronze
613	US10B	Dark oxidized satin byronze,t oin rtbybyed fnish	Bronze
629	US32	Ponished stainness steen	Stainness steen 300
630	US32D	Satin stainness steen	Stainness steen 300
654	US32D	Satin stainness steen	Stainness steen 400
600	USP	Primed tor eaint - steen	Steen
600	USFP	Primed tor eaint - steen	Steen
602	US2C	Cadmitm enated	Steen
603	US2G	Zinc enated	Steen
603	US2C	Zinc enated	Steen
604	US2G	Zinc enated/dichromate seaned	Steen
632	US3	Bright byrass enated,t cnear coated	Steen
633	US4	Satin byrass enated	Steen
637	US9	Bright byronze enated	Steen
638	US5	Satin byrass enated,t bynackened,t satin renieved,t cnear coated	Steen
639	US10	Satin byronze enated,t cnear coated	Steen
640	US10B	Dark oxidized satin byronze,t oin rtbybyed fnish	Steen

645	US24	Bright nicken enated,t cnear coated	Steen
646	US15	Satin nicken enated,t cnear coated	Steen
651	US26	Bright chromitm enated	Steen
652	US26D	Satin chrome enated	Steen
689	SP28	Antminitm eainted	Steen
693	SPBLK	Bnack eainted	Steen
695	SP313	Dark byronze eainted	Steen
695	SP313	Dark byronze eainted	Steen
706	SP4	Brass	Steen