Model: AN4-3A

Machine Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.406 inches
Fastener Length
Between 0.453 inches and 0.500 inches
Head Style
Hexagon
Head Height
Between 0.140 inches and 0.172 inches
Width Between Flats
Between 0.428 inches and 0.440 inches
Thread Diameter
0.250 inches
Grip Length
Between 0.046 inches and 0.078 inches
Features Provided
Finished head
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
125000 pounds per square inch
Hardness Rating
26.0 rockwell c and 32.0 rockwell c
Material
Steel comp 8735 or steel comp 8740
Material Specification
Mil-s-6098 military specification 1st material response or mil-s-6049 military specification 2nd material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification single treatment response
Thread Series Designator
Unf
Specification Data
81349-mil-b-6812 government specification and 88044-an4-3a/canceled government standard
Nondefinitive Specification/std Data
Hex type and 1/4 unf size and 1/2 in. Length
NSN
5306-00-206-4931
Part Number
AN4-3A
Description
Bolt,machine
CAGE
88044

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 AN4-3A NSN 5306-00-206-4931

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

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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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