Model: MS21288-13

Machine Bolt
Description:

3a thread class, right-hand , 0.626 inches thread length, 0.938 inches fastener length, double hexagon w/hole head style, 0.260 inches head height.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.626 inches and 0.686 inches
Fastener Length
0.938 inches
Head Style
Double hexagon w/hole
Head Height
0.260 inches
Width Between Flats
Between 0.243 inches and 0.251 inches
Extended Washer Diameter
0.375 inches
Extended Washer Thickness
Between 0.040 inches and 0.050 inches
Hole Diameter
0.047 inches
Thread Diameter
0.190 inches
Grip Length
Between 0.252 inches and 0.312 inches
Hole Quantity
4
Hole Type
Drilled
Features Provided
Finished head
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
130000 pounds per square inch
Hardness Rating
248.0 brinell standard and 341.0 brinell standard
Hardness Rating
248.0 brinell standard and 341.0 brinell standard
Minimum Yield Strength
85000 pounds per square inch
Hole Configuration Style
Double hexagon longitudinal hole
Surface Finish
32.0 microinches threads
Surface Finish
63.0 microinches bearing surface of head
Surface Finish
63.0 microinches grip
Material
Iron alloy 660
Material Specification
Ams 5732 assn standard single material response
Thread Series Designator
Unjf
NSN
5306-00-003-6726
Part Number
MS21288-13
Description
Bolt,machine
CAGE
96906

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 MS21288-13 NSN 5306-00-003-6726

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:
SX
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:
--
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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