5310-01-285-6778 WASHER,RECESSED Index 5340-01-285-6780 CLAMP,BELT

National Stock Number:
5340-01-285-6779

Federal Supply Class:
5340

National Item Identification Number:
012856779

Description:
COVER,ACCESS

Detail:
A rigid or flexible item of various shapes attached to a structure for the purpose of providing access for inspection, service, replacement of components and/or adjustments or mounting operations. It is designed to be attached by means of bolt holes, slots, mounting ears, tabs, and the like. To permit access, the mounted cover requires partial or complete removal. It may include an observation window. For items permanently attached by hinges and the like, see DOOR, ACCESS. Excludes all covers not specifically designed to provide access for the purposes listed above.


Manufacturer Information:
717512840-00104939LOCKHEED MARTIN CORPORATION


Techincal Specification:
BODY THICKNESS0.100 INCHES NOMINAL
BOLT CIRCLE DIAMETER4.150 INCHES NOMINAL
BOLT CIRCLE HOLE QUANTITY7
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
FIRST RECESS INSIDE HEIGHT0.590 INCHES NOMINAL
FLANGE THICKNESS0.070 INCHES NOMINAL
HOLE DIAMETER0.169 INCHES NOMINAL AND 0.191 INCHES NOMINAL
INSIDE CORNER RADIUS0.060 INCHES NOMINAL
INSIDE WIDTH3.515 INCHES MINIMUM AND 3.525 INCHES MAXIMUM
OUTSIDE DIAMETER4.520 INCHES NOMINAL
MATERIALALUMINUM ALLOY 6061
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
SECURING DEVICE TYPESPECIAL
SPECIAL FEATURESONE ADDITIONAL HOLE 0.233 IN. MIN AND 0.239 IN. MAX DIA; ONE CENTER APERTURE 1.000 IN. DIA


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