Model: 1611202-4

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Fastener Length
0.625 inches
Head Style
Button
Head Diameter
0.437 inches
Locking Feature
Patch locking feature
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Part Name Assigned By Controlling Agency
Screw, socket buttonhead, self-locking
Material
Steel
Material Specification
Ff-s-86, ty iv federal specification single material response
Surface Treatment
Zinc
Surface Treatment Specification
Qq-z-325, ty ii, cl 3 federal specification single treatment response
Thread Series Designator
Unc
NSN
5305-01-597-1637
Part Number
1611202-4
Description
Screw,cap,socket Head
CAGE
10001

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 1611202-4 NSN 5305-01-597-1637

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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