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Sales Systems Ltd. performs metallurgical testing examinations including carburization, decarburization, and case depth analysis on threaded and non-threaded fasteners. There are two types of methods: optical and micro-hardness. A Buehler micro-hardness tester which is an optical microscope with a magnification strength of 400x is our primary instrument for these analyses.

Heat treated metallic products

Industries Served
Fastener, marine, shipbuilding, and machine shops

Metallurgical Testing  · Standard Test Methods  · Quality Certification  · Professional Associations  · Test Report Documentation

Metallurgical Testing
  • Decarburization Check (Optical and Micro-Hardness Method)
  • Case Depth Determination

Standard Test Methods
  • SAE J423 Methods of Measuring Case Depth
  • SAEJ121 Carburization and Decarburization in Threaded Fasteners Standard Test Methods for Rockwell Hardness of Metallic Materials
  • FFW-84 Lock Washer Testing Procedure
  • MIL-B-857A Military Specification Bolts, Nuts, and Studs
  • FF-S-85C Federal Specification Screw, Cap, Slotted, and Hexagon Head
  • ASTM-A574 Alloy Steel Socket Head Cap Screws

Quality Certification
ISO 9001-2008 Certified by National Quality Assurance (NQA)

Professional Associations
  • National Quality Assurance (NQA)
  • Collaborative Testing Service (CTS)
  • American Society for Nondestructive Testing (ASNT)
  • ASTM
  • SAE
  • Virginia Ship Repair Assn (VSRA)

Test Report Documentation
Sales Systems, Limited provides test reports in accordance to LAA, latest revision. This procedure sets forth the minimum requirements for written test data and test reports sent to testing customers and test reports produced for Sales Systems, Limited. Test reports in accordance with the fastener quality act apply only when specified on customer contract documents.
  1. When test data is transmitted on test forms, the following information shall be provided. It may be shown on one or more of the test forms or suppliant form. All forms must be marked with the laboratory test number.
    1. Originator identified as “Sales Systems, Limited”
    2. Customer name and purchase order number (if used)
    3. Signature of laboratory manager or authorized representative
    4. Date of test or tests
  2. Formal test reports shall contain the following:
    1. Laboratory test number, page number and number of pages on each page
    2. A letter head that includes: “Sales Systems, Limited”, its street address, “Laboratory Testing Division”, “Test Report”, and the date of the report.
    3. The customer name, address and purchase order number if used. (This requirement does not apply when SSL is the customer).
    4. As complete item description as possible including:
      • Lot identification code and other identification numbers.
      • Product family (use IFI terminology where possible)
      • Dimension description including thread class and fit
      • Head markings (manufacturer and grade symbols)
      • Product specification (related to the laboratory in writing)
      • Specification that governed head treatment
      • Coating material, thickness and process applied.
      • The production lot size and the sample size made available to the laboratory for testing.
      • Manufacturer’s name and address.
    5. Test specification and procedures, including sampling.
    6. Name and affiliation of person doing lot sampling.
    7. Test required by product specification.
    8. Test and dates that test were performed, and number of items in each test.
    9. Measurements, examination derived results and uncertainty (where relevant).
    10. A description of test deviations, additions and deletions.
    11. “The test results relate only to the item(s) tested. This report shall not be reproduced, except in full, without the written approval of Sales Systems, Limited, Laboratory Test Division”. “The samples tested conform (do not conform), to specification requirements”, (when specification called out for testing.)
    12. Clear identification of any tests that was subcontracted.
    13. Corrected reports shall have the words “Corrected Report” immediately after the laboratory number and shall be dated the day of the correction.
  3. It is a policy of SSL that documents associated with test reports and test report development shall be identified as quality records and controlled as such.

Distributor of Industry Standard and Military Specification Threaded Fasteners