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Externally Relieved Body Bolt

Model / MPN: 297101-4 | NSN: 5306-01-440-6696
ITAR Registered seal

An externally threaded fastener whose threaded portion is of one diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a diameter less than the pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Product Details
NATO Stock Number
5306-01-440-6696
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.355 inches and 0.395 inches
Fastener Length
0.625 inches
Head Style
Dished hexagon
Head Height
Between 0.125 inches and 0.140 inches
Width Between Flats
Between 0.429 inches and 0.439 inches
First Diameter From Head
Between 0.200 inches and 0.206 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.280 inches and 0.320 inches
Thread Diameter
0.250 inches
Features Provided
Washer
Thready Qty Per Inch (tpi)
28
Externally Relieved Body Diameter Quantity
1
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp e4340 or steel comp 8740
Material Specification
Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams6322 assn standard 2nd material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification single treatment response
Thread Series Designator
Unjf
297101 Series Parts

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297101-4 Cross Reference