DI-MFFP-81402C

Finish Specification

The Finish Specification identifies the organic and inorganic surface pretreatments, coatings, and sealants used for corrosion protection so the procuring activity can evaluate the contractor's selected finishes.

Approval DateNovember 9, 2022

AMSC NumberN10368

Preparing ActivityAS

Project NumberMFFP-2022-009

OPR—

DTIC ApplicableNo

GIDEP ApplicableNo

Limitation—

Applicable Forms—

Approval Limitation—

Form Version—

DID Formatfree_text

963C CompliantYes

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

Supersedes

DI-MFFP-81402B

DI-MFFP-81403

Description & Purpose

—

Application & Interrelationship

—

Use & Relationship

The Finish Specification identifies the specific organic and inorganic surface pretreatments, coatings, and sealants intended to be used for corrosion protection of the materials identified in the corrosion prevention and control plan. The specification will be used by the procuring activity to evaluate the adequacy of the finishes selected by the contractor in meeting the specific design, performance, and operational requirements contained in military specifications, standards, and appropriate systems specifications.

This DID contains the format and content preparation instructions for data resulting from the technical requirements described in 4.2 of MIL-STD-1568.

This DID must be tailored to the specific system being acquired and the procuring activity's specific requirements.

This DID is applicable to any system acquisition that includes a requirement for a finish specification in accordance with MIL-STD-1568. This includes MIL-STD-1530(USAF), MIL-HDBK-1783, MIL-STD-1798, MIL-STD-3024, and MIL-STD-7179. (Copies of these documents are available online at https://quicksearch.dla.mil.)

This DID shall be used for the entire system and all major subsystems, including airframe, avionics, engine, launch and recovery systems, mechanical subsystems, and support equipment.

This DID is intended for use in conjunction with the corrosion prevention and control plan DID numbered DI-MFFP-81403.

This DID supersedes DI-MFFP-81402B.

Preparation Instructions

1Reference Documents.The applicable issue of the documents cited herein, including their approval dates and dates of any applicable amendments, notices, and revisions shall be as specified in the contract.

2Format.The finish specification shall be in contractor's format.

3Content.The finish specification shall include the following data.

3.1Scope paragraph.The scope paragraph shall contain statements as to the degree of coverage encompassed by the document, for example, the entire system, parts thereof, spare parts, standard parts, Government furnished equipment, and vendor supplied parts. It shall also specify the type of protection in accordance with MIL-STD-7179.

3.2Requirements paragraph.The requirements paragraph shall contain the contractor's description of the application and control techniques to be utilized with the organic finishes. Any special considerations due to system peculiarity shall be stated; for example, aerodynamic heating, nuclear effects, severity of environment, electromagnetic compatibility/electromagnetic pulse requirements, and resistance to chemical/biological warfare agents/decontaminants. Definitions contained herein shall include exterior surfaces as well as interior surfaces and permanently installed fasteners. Subsequent paragraphs shall specify the details of the finish system. Each finish procedure shall be assigned a code designation for reference on production drawings.

3.3Special exterior finishes.Appropriate subparagraphs of the finish specification shall cover special finishes for special areas such as wing and empennage, control surface cutouts and wells, bomb bays, wheel wells and landing gears, leading edges, walkways, man-made and non-manmade environments, system components, laminates, and exterior markings.

3.4Notes.The notes section shall contain a list of surfaces not to be treated or coated along with supporting rationale. This section shall also contain definitions.

3.5Sealing.The sealing paragraph shall include:

3.5.1Sealing requirements on:

3.5.1.1Permanently attached structure.

3.5.1.2Structure that is mechanically separable for maintenance.

3.5.1.3Dual or multiple function interfaces (for example, electrically conductive structural joint).

3.5.1.4Mechanically attached creviced joints (for example, riveted).

3.5.1.5Galvanic couples (with protective permanent finish codes).

3.5.1.6Crevice sealing of sump located joints.

3.5.1.7Environmental sealing (including mechanically separable hatches and avionic bays).

3.5.1.8Fluid tank sealing (fuels, operational fluids, condensed gases).

3.5.1.9Fuselage pressure sealing (joints, faying surfaces, windows).

3.5.1.10Acid sealing (batteries and battery boxes, including vents).

3.5.1.11Firewall sealing.

3.5.1.12Aerodynamic smoothing.

3.5.1.13Potting including electrical connectors.

3.5.1.14Heat resistant sealing.

3.5.1.15Fay surface sealing.

3.5.1.16Permanent fastener sealing.

3.5.1.17Drainage provisions.

3.5.1.18Latrine sealing, integrity, and overflow provisions.

3.5.1.19Galley sealing, integrity, and spillage provisions.

3.5.1.20Removable fastener sealing.

3.5.1.21Transparency sealing.

3.5.1.22Market beacon, antennae, and other external interface installations.

3.5.1.23Coolant lines, elastomers, Marmon and "V" clamping.

3.5.2List of sealing materials and process specifications used.

3.5.3Inspection and control requirements.

3.6Finish codes.The finish specification shall contain a table of all finish codes allowed for use in the system. This table shall include, but not be limited to, for each reference code: reference to the application specification or standard, reference to quality assurance verification methods, and the resulting finish thickness.

3.7Specification cross references.The finish specification shall contain a cross reference of company and vendor specifications with the nearest equivalent military or industry standard specifications. Any company or vendor specifications which are not equivalent shall be identified and the differences described.

3.8Other considerations.Alternative finishes to those described in MIL-STD-7179 and MIL-DTL-5002 shall be presented in a separate section or appendix, and accompanied by supporting technical information to justify their use on any specific drawing.

References

Copies of these documents are available online at https://quicksearch.dla.mil

Schema v3.0Community-maintained · Verify against ASSIST

Community-maintained — not an official government database.
Verify against ASSIST·GitHub·About·Disclaimer