Model: BLT4446

Externally Relieved Body Bolt

Special Features:

Second diameter from head rounded both sides 0.195 in. From full diameter of 0.250 in.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.626 inches and 0.686 inches
Fastener Length
1.204 inches
Head Style
Hexagon
Head Height
0.140 inches
Width Between Flats
0.491 inches
First Diameter From Head
Between 0.246 inches and 0.249 inches
Second Diameter From Head
Between 0.190 inches and 0.195 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.180 inches and 0.210 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
Between 0.518 inches and 0.578 inches
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Externally Relieved Body Diameter Quantity
2
Material
Steel
Material Specification
Hr 650, fscm k0378 mfr ref single material response
Surface Treatment
Silver
Surface Treatment Specification
Dtd 939, fscm k0378 mfr ref single treatment response
Thread Series Designator
Unjf
NSN
5306-01-175-8766
Part Number
BLT4446
Description
Bolt,externally Relieved Body
CAGE
K0378

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 BLT4446 NSN 5306-01-175-8766

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
713
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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