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Externally Relieved Body Bolt

Model / MPN: 727193-1 | NSN: 5306-00-807-9221
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
5306-00-807-9221
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.393 inches and 0.433 inches
Fastener Length
Between 1.880 inches and 1.910 inches
Head Style
Hexagon
Head Height
Between 0.172 inches and 0.204 inches
Width Between Flats
Between 0.546 inches and 0.548 inches
Shank Unthreaded Hole Diameter
0.075 inches first hole and 0.080 inches first hole
First Diameter From Head
Between 0.336 inches and 0.346 inches
Second Diameter From Head
Between 0.3732 inches and 0.3743 inches
Third Diameter From Head
Between 0.186 inches and 0.196 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.060 inches and 0.070 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
Between 1.540 inches and 1.550 inches
Distance From Largest Bearing Surface Of Head To End Of Third Diameter
Between 1.603 inches and 1.613 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
150000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center
1.730 inches first hole
Externally Relieved Body Diameter Quantity
3
Material
Steel comp 8630
Material Specification
Mil-s-6050, f4 military specification single material response
Surface Treatment
Chromium
Surface Treatment Specification
496, type 2 fscm 36659 mfr ref single treatment response
Thread Series Designator
Unf
727193 Series Parts
Solicitations
Solicitation Description Qty UOM Close Date
SPE5E417TD202 Bolt, Externally Rel 110 EA 07/31/2017
SPE5E417TF606 Bolt, Externally Rel 250 EA 09/15/2017
SPE5E418T4029 Bolt, Externally Rel 195 EA 01/09/2018
SPE5E418T6251 Bolt, Externally Rel 191 EA 02/22/2018

Pricing and Availability

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727193-1 Cross Reference
  • 727193-1
  • 727193-1
  • 727193-1