Model: 78163-68

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.934 inches and 1.016 inches
Fastener Length
Between 0.984 inches and 1.016 inches
Head Style
Flat chamfer
Head Diameter
Between 0.218 inches and 0.226 inches
Head Height
Between 0.134 inches and 0.138 inches
Hole Diameter
0.036 inches
Internal Drive Style
Hexagon
Thread Diameter
0.138 inches
Width Across Flats
0.109 inches
Hole Quantity
2
Hole Type
Drilled
Thready Qty Per Inch (tpi)
40
Min. Tensile Strength (psi)
170000 pounds per square inch
Hardness Rating
38.0 rockwell c and 45.0 rockwell c
Hardness Rating
38.0 rockwell c and 45.0 rockwell c
Hole Configuration Style
Round internal hexagon
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 410
Material Specification
Qq-s-763 federal specification single material response
Thread Series Designator
Unf
NSN
5305-00-447-6579
Part Number
78163-68
Description
Screw,cap,socket Head
CAGE
11599

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 78163-68 NSN 5305-00-447-6579

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
096640
UFC:
50600
LTL:
70.0
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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