Model: MIL-B-45912

Machine Bolt
Description:

2a thread class, right-hand , 1.594 inches thread length, 1.670 inches fastener length, undercut hexagon head style, 0.438 inches head height.

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 1.594 inches and 1.750 inches
Fastener Length
Between 1.670 inches and 1.750 inches
Head Style
Undercut hexagon
Head Height
Between 0.438 inches and 0.458 inches
Width Between Flats
Between 0.985 inches and 1.000 inches
Locking Feature
Distortions bearing surface of head
Thread Diameter
0.750 inches
Features Provided
Finished head
Thready Qty Per Inch (tpi)
16
Min. Tensile Strength (psi)
150000 pounds per square inch
Hardness Rating
25.0 rockwell c and 34.0 rockwell c
Material
Steel
Material Specification
Astm a449, grade 8 assn standard single material response or sae j429, grade 8 assn standard single material response or gm 300-m mfr ref single material response
Surface Treatment
Cadmium and chromate or zinc
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification 1st treatment response or astm b633, type 1, class 3 assn standard 2nd treatment response
Thread Series Designator
Unf
Specification Data
81349-mil-b-45912 government specification and 96906-ms35764 rev d/inactive/ government standard
Nondefinitive Specification/std Data
B composition
Departure From Cited Document
As modified by optional zinc coated surf. Treat.
NSN
5306-00-021-4259
Part Number
MIL-B-45912
Description
Bolt,machine
CAGE
81349

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 MIL-B-45912 NSN 5306-00-021-4259

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:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
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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