Supplier Quality (SQ) from Northrop Grumman Aeronautics Systems (NGAS) and the Strategic Space Systems Division (SSSD) and the Strategic Deterrent Systems (SDS) of the Space Sector (SP) maintain an "Approved Special Processor List" (ASPL) for all NGAS, SSSD and SDS programs. This list can be sorted by Supplier Name, Supplier Number, Country, or Process Specifications and Process Categories.

How to use the ASPL and the enclosed information is bulleted below:

  • Users must initially select the specific ASPL they are searching within (i.e. Aeronautics Systems, Strategic Space Systems, or Strategic Deterrent Systems). If you are unsure which ASPL to search please verify with your NG Buyer.
  • All specifications can be selected by selecting Specification (1st button), Category (2nd button), which includes 8 categories and Space Systems Division specifications, or F35 specifications under Program (3rd button).
  • At the Top RH side of the site is a “Helpful Links” button that has 8 links. See Below for 5 specific ones.
    • First two links are to Boeing’s ‘D1-4426’ ASPL and Lockheed’s ‘QCS-001’ ASPL.
    • Third is a “Change Log” that shows when processors are added or removed, or when specifications are added or removed from the processors or the ASPL.
    • The 4th and 5th are listings of NDT technique approvals; by “Processor and by Part Number”.
For any questions, contact:

Warning:    Northrop Grumman process specifications contain technical data whose export is restricted by the Arms Export Act (Title 22, U.S.C., Sec 2751 et seq.) or the Export Administration Act (Title 50, U.S.C., App. 24001-240). Violation of these export laws are subject to severe criminal penalties.

 


 
STEELVILLE MANUFACTURING CO - NADCAP Approved
90068157
Independent Processor
1056 PERKINS DR
STEELVILLE , MO 65565 United States
Phone: 573-775-2977
Fax: 573-775-5093
Selected sector: AS

Specification
Process Description
Category
Finish Specification for F-35 Weapon System. Note* Approval for this specification is required in conjunction with MIL-PRF-8625 for appropriate anodize seal requirements
Limits:
This specification shall be used in conjunction with MIL-PRF-8625 for appropriate anodize seal requirements

Process Specification for Etching Prior to Penetrant Inspection
Chemical Processing
Limits:
None

Process Specification for Sealing, Integral Fuel Tank and Fuel Cell Cavity
Finishes/Coatings
Limits:
Not approved for Appendix A

Cleaning and surface preparation of titanium and titanium alloys
Chemical Processing
Limits:
Grit Blast only. Not approved for Appendix "A"

Process Specification for Contamination Free Hole Preparation, Drilling, Machining and Trimming of Composites and Composite/Metallic Structures
Composites
Limits:
Machining/Drilling of mechanically Fastened Non-Metallic Detail Parts

Penetrant Inspection
Non-Destructive Testing
Limits:
Limits: Not Approved for Appendix B

Passivation Treatments for Corrosion-Resistant Steel
Chemical Processing
Limits:
Limited to Method I, Type 6

Heat Treatment Precipitation-Hardening CRES and Maraging Steel Parts
Heat Treat
Limits:
Limited to furnace #2

Heat Treatment of Wrought Aluminum Alloy Parts
Heat Treat
Limits:
Limited to furnace #2

Heat Treatment of Titanium Alloy Parts
Heat Treat
Limits:
Limited to Stress Relieve only, furnace #2

Standard Practice for Operating Salt Spray (Fog) Apparatus
Miscellaneous
Limits:
None

Descaling & Cleaning Titanium and Titanium Alloy Surfaces
Chemical Processing
Limits:
None

Standard Practice for Liquid Penetrant Testing
Non-Destructive Testing
Limits:
None

Hardness and Conductivity Testing
Miscellaneous
Limits:
None

Fluorescent Penetrant Inspection of Metallic Parts & Materials
Non-Destructive Testing
Limits:
Limited to normal control non-critical parts

Etch/Cleaning Prior to Penetrant Inspection
Chemical Processing
Limits:
Aluminum alloys only Alternate etch solution per RCI B R443413

Touch-up Requirements for Chemical and Organic Finishes
Chemical Processing
Limits:
None

Application and Control of Organic Finishes
Chemical Processing
Limits:
None

Chemical Conversion Coatings for Aluminum and Aluminum Alloy
Chemical Processing
Limits:
Type 1 only

Anodic Coatings For Aluminum and Aluminum Alloys
Chemical Processing
Limits:
Types IC, II, IIB, and IIl