4240-01-265-2680 MASK,CHEMICAL-BIOLOGICAL Index 5340-01-265-2682 POST,ELECTRICAL-MECHANICALEQUIP

National Stock Number:
5365-01-265-2681

Federal Supply Class:
5365

National Item Identification Number:
012652681

Description:
SPACER,PLATE

Detail:
A flat metal or plastic item of various peripheral shapes having a solid (not laminated) cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole having a solid rectangular cross-section use DISK, SOLID, PLAIN. For round or hexagonal items with only one hole centrally located and with the length (thickness) exceeding 25 percent of the outside diameter or distance across peripheral flats, see SPACER, SLEEVE. The thickness between the two parallel bearing surfaces must be 0.006 inch, (0.152 mm) or more for items less than 1/4 inch (6.35 mm) across the peripheral diameter, or smallest overall outside dimension, or must be 0.016 inch (0.406 mm) or more for items 1/4 inch (6.35 mm) or greater across the peripheral diameter or smallest overall outside dimension. For items with a thickness less than those indicated above, see SHIM. For items with one hole centrally located conforming to the above dimensional criteria use WASHER, FLAT or SPACER, RING as applicable. When thickness and/or outside diameter or smallest overall outside dimension is designated as a tolerance/dimension the maximum dimension will be used to determine compliance. Excludes GASKET; INSULATOR (as modified) and MOUNTING PAD, ELECTRICAL-ELECTRONIC COMPONENT.


Manufacturer Information:
1200934119200US ARMY ARDEC RDECOM


Techincal Specification:
OVERALL LENGTH6.940 INCHES NOMINAL
OVERALL WIDTH2.250 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-635 FED SPEC ALL MATERIAL RESPONSES
MATERIALSTEEL COMP 4130 AND STEEL COMP 4140
SPECIAL FEATURES2 HOLES 0.500 IN DIA; 2 HOLES 0.310 IN. DIA; 1 HOLE 0.380 IN. DIA
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 FN 5.3.2.3 MIL STD SINGLE TREATMENT RESPONSE
SURFACE TREATMENTPHOSPHATE ZINC


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