Model: 8174345

Thumbscrew

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.734 inches and 0.766 inches
Fastener Length
Between 16.797 inches and 16.828 inches
Head Style
Knurled no. 2
Head Diameter
1.250 inches
Head Height
0.625 inches
Point Length
0.125 inches
Point Style
Flat
Thread Diameter
0.312 inches
Thready Qty Per Inch (tpi)
18
Point Chamfer Angle
90.0 degrees
Material
Steel comp 416 or steel comp 1117
Material Specification
Qq-s-764 federal specification 1st material response or qq-s-637 federal specification 2nd material response
Thread Series Designator
Unc
NSN
5305-00-568-8571
Part Number
8174345
Description
Thumbscrew
CAGE
18876

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

Part 8174345 NSN 5305-00-568-8571

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06673
FIIG:
A003B0
Concept No.:
App. Key:
SR
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:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
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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