Model: 71657H-7-2455

Externally Relieved Body Bolt

Special Features:

Dry film lube per mil-l-46010 grip only

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.324 inches and 0.344 inches
Fastener Length
Between 2.893 inches and 2.903 inches
Head Style
Hexagon
Head Height
Between 0.183 inches and 0.215 inches
Width Between Flats
0.558 inches
First Diameter From Head
Between 0.437 inches and 0.438 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 2.445 inches and 2.465 inches
End Application
Pacer dawn
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
46.0 rockwell c and 55.0 rockwell c
Externally Relieved Body Diameter Quantity
1
Material
Steel comp h11
Material Specification
Ams 6487 (h-11) assn standard single material response
Surface Treatment
Cadmium threads
Surface Treatment
Cadmium head
Surface Treatment Specification
Nas 672 national specification single treatment response head
Surface Treatment Specification
Nas 672 national specification single treatment response threads
Thread Series Designator
Unjf
NSN
5306-01-337-2300
Part Number
71657H-7-2455
Description
Bolt,externally Relieved Body
CAGE
56878

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum 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.

Part 71657H-7-2455 NSN 5306-01-337-2300

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06675
FIIG:
A003B0
Concept No.:
App. Key:
BF
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

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Schedule B and Export
  • Schedule B: 7318152000
  • SITC: 69421
  • End Use: Iron and steel products, other
  • NAICS: 332722
  • USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment

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