RIVER STREET METAL FINISHING, INC. has been providing a metal finish of the highest quality to manufacturers and machine shops throughout the New England area since 1991.
Our many years of experience and accumulated knowledge have allowed us to reach a high level of expertise in the metal finishing industry. We take pride in our ability to troubleshoot any dilemma you may have in ensuring that your finished product meets all specifications, this includes the precision masking of critical holes and surfaces also pieces requiring multiple finishes. In today’s industry, with increasingly short lead times, we also recognize the necessity of providing on time delivery and strive to meet your scheduling needs.
Our NADCAP Accredited Quality Management System ensures that quality control is always in force. Every aspect of production is overseen, from the careful racking of your pieces to packaging your finished product for final shipment. We strive to provide consistent precision finishing on every aluminum part processed in accordance with customer requirements and product specifications.
River Street Metal Finishing, Inc. is pleased to welcome you to our web site. Located in Braintree, Massachusetts, conveniently located approximately 20 miles south of Boston, we are easily accessible via Routes 93 and 128/95.
ANODIZE is an electro-chemical process that actually penetrates and coats the surface of aluminum. This conversion may include the use of dyes that are sealed into the pores of the aluminum, in a brilliant array of colors. Unlike a painted surface which will peel and wear with time, and Anodized finish is incorporated into the aluminum surface producing an extremely hard and permanent finish. An eye-appealing, often decorative finish, the Anodize coating has become extremely popular for paint ball guns and automotive restoration. Anodize qualities include:
CHROMATE Coversion Coating, also referred to as Iridite or Alodine, on an aluminum surface will provide a thin chemical finish ranging in color from clear to varying iridescent shades of yellow to gold. A relatively inexpensive aluminum finish, Chromate is often used on aluminum or aluminum Alloys when the following is required:
HARDCOAT ANODIZE, an electro-chemical application similar to the standard Anodize finish, provides and even harder, more durable aluminum surface. This finish is often used for Marine applications as it's corrosion resistance, even to salt water, is outstanding. A denser, thicker coating, Hardcoat finishes offer a buildup ranging from .005-.0025 inches. Coating thickness is very closely controlled making this and ideal application for machined aluminum pieces with high tolerances. Teflon Impregnation is available upon request. Hardcoat features include:
Our facility provides hardcoat anodize in accordance to the following military and industry specifications:
MIL-A-8625 Type III, Class 1 & 2
MIL-A-63576 Type I – PTFE Impregnated
ASTM B580-79 Type A
PASSIVATION is a chemical process performed on stainless steel to remove free iron and other residual metals produced during the manufacture and machining process that may adversely affect the surface quality of the product. The removal of such contaminants during passivation ensures a cleaner and more corrosion resistant surface. Passivation ensures the following:
Our facility provides passivate in accordance to the following military and industry specifications:
QQ-P-35 Type II, VI, VII
ASTM A 967-05
ASTM A 380-06 Codes F - M
35 Johnson Lane
Roc Sam Industrial Park
Braintree, Massachusetts 02184-6701
Telephone & Fax:
NADCAP, the National Aerospace and Defense Contractors Accreditation Program is a global cooperative accreditation program for industries related to aerospace engineering and defense. NADCAP’s membership of prime contractors, include Boeing, GE Aviation, Honeywell Aerospace, Pratt & Whitney and Raytheon, among many others who convene to coordinate industry-wide standards for special processes and products were quality and safety are common goals.
Our scope of accreditation includes:
AC 7004 – Aerospace Quality Management System
AC7108 - Chemical Processing to the following specifications: