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National Stock Number:
5365-01-415-1981
Federal Supply Class:
5365
National Item Identification Number:
014151981
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.
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Manufacturer Information:
| 1220B1284-3 | 03538 | LOCKHEED MARTIN CORPORATION | | 1220B1284-3 | 54497 | MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS |
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Techincal Specification:
| APERTURE DIAMETER | 2.002 INCHES NOMINAL | | BOLT HOLE QUANTITY | 4 | | BOLT CIRCLE DIAMETER | 3.850 INCHES NOMINAL | | LARGEST BOLT HOLE DIAMETER | 0.531 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | NICKEL ALLOY 400 | | OUTSIDE DIAMETER | 4.750 INCHES NOMINAL | | OVERALL THICKNESS | 0.125 INCHES NOMINAL | | SMALLEST BOLT HOLE DIAMETER | 0.406 INCHES NOMINAL | | SMALLEST BOLT HOLE QUANTITY | 4 | | STYLE DESIGNATOR | CIRCULAR |
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