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Externally Relieved Body Bolt

Model / MPN: 1441M12P01 | NSN: 5306-01-244-5941
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
5306-01-244-5941
Sold in multiples of
1 EA
DEMIL
NO
Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.530 inches and 0.550 inches
Fastener Length
Between 0.940 inches and 0.960 inches
Head Style
Double hexagon extended washer
Head Height
Between 0.373 inches and 0.392 inches
Width Between Flats
0.375 inches
Extended Washer Diameter
Between 0.550 inches and 0.570 inches
Extended Washer Thickness
Between 0.070 inches and 0.090 inches
First Diameter From Head
Between 0.302 inches and 0.308 inches
Second Diameter From Head
Between 0.319 inches and 0.321 inches
Third Diameter From Head
Between 0.280 inches and 0.290 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.060 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
0.190 inches
Distance From Largest Bearing Surface Of Head To End Of Third Diameter
Between 0.390 inches and 0.430 inches
Thread Diameter
0.3125 inches
Thready Qty Per Inch (tpi)
24
Externally Relieved Body Diameter Quantity
3
Material
Steel
Thread Series Designator
Unjf
Solicitations
Solicitation Description Qty UOM Close Date
SPE5EC16T1495 Bolt, Externally Rel 1577 EA 08/10/2016
SPE5E318T0852 Bolt, Externally Rel 3202 EA 10/27/2017
SPE5E318T2531 Bolt, Externally Rel 3621 EA 11/24/2017
SPE5EC18T1278 Bolt, Externally Rel 2024 EA 06/08/2018
SPE5EC18T1611 Bolt, Externally Rel 2960 EA 08/03/2018
SPE5EC18T1758 Bolt, Externally Rel 4631 EA 08/24/2018
SPE5EC18T1888 Bolt, Externally Rel 16170 EA 09/20/2018
SPE5EC19T0006 Bolt, Externally Rel 1326 EA 10/10/2018
SPE5EC19T0023 Bolt, Externally Rel 18013 EA 10/11/2018
SPE5EC19T0241 Bolt, Externally Rel 6108 EA 11/15/2018

Pricing and Availability

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1441M12P01 Cross Reference
  • 1441M12P01
  • 1441M12P01
  • 1441M12P01
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  • 1441M12P01