Model: 255710

Externally Relieved Body Bolt

Properties:

Thread Direction
Right-hand
Thread Length
0.438 inches
Fastener Length
Between 0.552 inches and 0.572 inches
Head Style
Double hexagon w/hole
Head Height
Between 0.365 inches and 0.385 inches
Width Between Flats
Between 0.367 inches and 0.376 inches
Extended Washer Diameter
Between 0.490 inches and 0.510 inches
Extended Washer Thickness
Between 0.070 inches and 0.080 inches
Hole Diameter
0.065 inches
First Diameter From Head
Between 0.251 inches and 0.274 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
0.125 inches
Thread Diameter
0.312 inches
Hole Quantity
2
Hole Type
Drilled
Nonstandard Thread Pitch Diameter
+0.2800/+0.2824 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
30.0 rockwell c and 38.0 rockwell c
Hole Configuration Style
Double hexagon longitudinal hole
Externally Relieved Body Diameter Quantity
1
Material
Stainless steel
Material Specification
Ams 5616 assn standard single material response
Precious Material
Silver
Surface Treatment
Silver
Surface Treatment Specification
Ams 2410 assn standard single treatment response
Thread Series Designator
Unf
NSN
5306-00-207-5190
Part Number
255710
Description
Bolt,externally Relieved Body
CAGE
77445

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 255710 NSN 5306-00-207-5190

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:
S
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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