Model: 638574

Machine Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.472 inches and 0.552 inches
Fastener Length
Between 0.802 inches and 0.822 inches
Head Style
Double hexagon w/hole
Head Height
Between 0.250 inches and 0.270 inches
Width Between Flats
Between 0.243 inches and 0.251 inches
Extended Washer Diameter
Between 0.365 inches and 0.385 inches
Extended Washer Thickness
Between 0.040 inches and 0.050 inches
Thread Diameter
0.190 inches
Grip Length
Between 0.270 inches and 0.330 inches
Features Provided
Finished head
Thready Qty Per Inch (tpi)
32
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Surface Finish
32.0 microinches threads
Surface Finish
63.0 microinches bearing surface of head
Surface Finish
63.0 microinches grip
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 8740
Material Specification
Ams 6322 assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Ams 2400 assn standard single treatment response
Thread Series Designator
Unjf
NSN
5306-00-113-6180
Part Number
638574
Description
Bolt,machine
CAGE
77445

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

Part 638574 NSN 5306-00-113-6180

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01847
FIIG:
A003B0
Concept No.:
App. Key:
BR
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:
U
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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