Model: MB178-10

Socket Head Cap Screw

Special Features:

Two holes drilled in threaded portion 90 degrees apart; center of holes 0.179 min and 0.189 max from end of screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.628 inches and 0.678 inches
Fastener Length
Between 2.178 inches and 2.208 inches
Head Style
Fillister
Head Diameter
Between 0.7995 inches and 0.8000 inches
Head Height
0.340 inches
Shank Unthreaded Hole Diameter
0.141 inches all holes and 0.151 inches all holes
Internal Drive Style
Hexagon
Thread Diameter
0.625 inches
Width Across Flats
Between 0.3130 inches and 0.3150 inches
Thready Qty Per Inch (tpi)
18
Distance From Head Largest Bearing Surface To Shank Hole Center
1.989 inches all holes and 2.029 inches all holes
Material
Steel comp xm-13
Surface Treatment
Passivate
Thread Series Designator
Unjf
NSN
5305-01-236-9157
Part Number
MB178-10
Description
Screw,cap,socket Head
CAGE
73197

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part MB178-10 NSN 5305-01-236-9157

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
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:
0.1000lbs
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:
713
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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