Model: 8278-035

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.547 inches and 0.641 inches
Fastener Length
Between 0.609 inches and 0.641 inches
Head Style
Flat chamfer
Head Diameter
Between 0.262 inches and 0.270 inches
Head Height
Between 0.160 inches and 0.164 inches
Hole Diameter
Between 0.043 inches and 0.051 inches
Internal Drive Style
Hexagon
Thread Diameter
0.164 inches
Width Across Flats
Between 0.141 inches and 0.143 inches
Hole Quantity
1
Hole Type
Drilled
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
160000 pounds per square inch
Minimum Yield Strength
125000 pounds per square inch
Hole Configuration Style
Round internal hexagon
Material
Iron alloy 660
Material Specification
Ams5731 assn standard single material response or ams5734 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unjc
NSN
5305-01-240-1269
Part Number
8278-035
Description
Screw,cap,socket Head
CAGE
58251

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 8278-035 NSN 5305-01-240-1269

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:
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:
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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