Model: B18.3.1M

Socket Head Cap Screw

Properties:

Thread Direction
Right-hand
Thread Length
12.0 millimeters
Fastener Length
12.0 millimeters
Head Style
Flat chamfer
Head Diameter
Between 9.7 millimeters and 10.0 millimeters
Head Height
Between 5.8 millimeters and 6.0 millimeters
Locking Feature
Pellet or strip or patch threads
Internal Drive Style
Hexagon
End Application
Engine, diesel
Thread Diameter
6.0 millimeters
Width Across Flats
Between 6.02 millimeters and 6.09 millimeters
Thread Pitch In Millimeters
1.0
External Thread Tolerance Class
4g6g
Part Name Assigned By Controlling Agency
Screw cap hexagon socket head (metric)
Material
Steel property class 12.9
Thread Series Designator
Iso m
NSN
5305-01-646-1780
Part Number
B18.3.1M
Description
Screw,cap,socket Head
CAGE
80204

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 B18.3.1M NSN 5305-01-646-1780

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:
A
ESD:
A
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:
Trailers/Vehicles

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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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