MS27404 Adapter, Straight, Reusable, Tube To Hose, Low Pressure

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MS27404B

Trivalent wrenchability. When the finish has been damaged due to poor wrenchability, the surface of the connector shall be touched up using the brush plating process below. The term "trivalent wrenchability" is used to evaluate the ability of the finish to withstand abrasion from an excessive amount of wrenching

a. Brush plating of hard chromium by electrodeposition shall be in accordance with

SAE-AMS2451/5.

b. Brush plating of medium-hardness, low stress nickel by electrodeposition shall be in accordance with SAE-AMS2451/9.

c. Brush plating of NAVAIR TCP shall be in accordance with MIL-DTL-81706, type II, class 1A, material form 1 through 6, application method B. Example of a PIN: M817062A6B.

NOTE. To the users of this document it is recommended that the use of steel parts with cadmium plating be used only when other materials and finishes specified in the document cannot meet performance requirements.

Adapter color coding shall be in accordance with MIL-DTL-38726.

Part or Identifying Number (PIN): The PIN consists of the letter "MS" the specification sheet number, a dash number for tube and port size, a letter designator for material type, material finish letter, and a blank (no lockwire) or L for lockwire . Unassigned PIN's shall not be used.

MS27404 -8 P CN L

L lock wire, blank no lock wire

Finish letter (see table II)

Material letter (see table I)

Size dash number (see figure 1)

Specification sheet number

PIN examples:

MS prefix

MS27404-8S is for a straight adapter, hose to tube, .500 inch (12.70 mm), steel (4130) with cadmium plate.

MS27404-8PCNL is for a straight adapter, hose to tube, .500 inch (12.70 mm), steel (4130) with cadmium and NAVAIR TCP, with nut drilled for lockwire hole.

MS27404-8WL is for a straight adapter, hose to tube, .500 inch (12.70 mm), aluminum alloy 7075- T73, SAE-AS5175 nut drilled for lockwire hole.

NOTE: Cadmium plating is not recommended. Carbon steel material with cadmium plating shall only be used when other materials and finishes specified in this document cannot meet performance requirements.

Marking: Part shall be permanently marked with the MS PIN, and include the manufacturers CAGE, name, or trademark.