(100) U.S Army Tank Automotive Command 12387305-9 Hexagon Plain Nut NSN:5310-01-378-8180

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Hexagon Plain Nut

NSN:5310-01-378-8180 | Model:12387305-9
ITAR Registered seal

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the dimension will be used to determine compliance.)

NSN Properties and Flags
NATO Stock Number
Thread Class
Thread Direction
Nut Style
Nut Height
Between 0.320 inches and 0.337 inches
End Application
Mrap - m-atv with cs13 pop and sne
Width Across Flats
Between 0.551 inches and 0.562 inches
Thread Series
Thready Qty Per Inch (tpi)
Thread Size
0.375 inches
Bearing Surface Type
Chamfered or washer faced
Special Features
Finish color bronze or olive drab
Surface Treatment
Zinc and chromate
Surface Treatment Specification
Astmb633, type 2, class 3 assn standard single treatment response
Nondefinitive Specification/std Data
2 type and 4 style

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