Model: 3176209-C-543

Socket Head Cap Screw

Special Features:

Critical item hydrogen embrittlement relief required

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.498 inches
Fastener Length
0.625 inches
Head Style
Flat countersunk
Head Diameter
0.411 inches
Locking Feature
Patch threads
Internal Drive Style
Hexagon
Thread Diameter
0.190 inches
Width Across Flats
0.125 inches
Thready Qty Per Inch (tpi)
24
Hardness Rating
36.0 rockwell c and 45.0 rockwell c
Countersink Angle
82.0 degrees
Material
Steel
Material Specification
66 federal standard single material response
Surface Treatment
Zinc and chromate
Surface Treatment Specification
Qq-z-325, type 2, cl 3 federal specification single treatment response
Thread Series Designator
Unc
NSN
5305-01-490-3464
Part Number
3176209-C-543
Description
Screw,cap,socket Head
CAGE
81349

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 3176209-C-543 NSN 5305-01-490-3464

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

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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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