Model: 91257A939

Machine Bolt

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 2.000 inches and 2.562 inches
Fastener Length
4.500 inches
Head Style
Hexagon
Head Height
0.546 inches
Width Between Flats
1.312 inches
Thread Diameter
0.875 inches
Thready Qty Per Inch (tpi)
14
Min. Tensile Strength (psi)
150000 pounds per square inch
Hardness Rating
33.0 rockwell c
Part Name Assigned By Controlling Agency
High-strength steel hex head cap screw
Color
Yellow
Material
Steel
Surface Treatment
Chromate zinc
Thread Series Designator
Unf
NSN
5306-01-601-4288
Part Number
91257A939
Description
Bolt,machine
CAGE
39428

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 91257A939 NSN 5306-01-601-4288

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:
A
ESD:
A
ESD:
A
MMAC:
CRITL:

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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