Model: 16690-8F-28B

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
1.650 inches
Fastener Length
Between 1.690 inches and 1.750 inches
Head Style
Flat countersunk
Head Diameter
Between 0.872 inches and 0.937 inches
Internal Drive Style
Hexagon
Thread Diameter
0.500 inches
Width Across Flats
0.312 inches
Thready Qty Per Inch (tpi)
20
Hardness Rating
36.0 rockwell c and 45.0 rockwell c
Countersink Angle
Between 80.0 degrees and 82.0 degrees
Color
Black
Material
Steel uns k03104
Material Specification
Astm a574 assn standard single material response
Surface Treatment
Oxide
Surface Treatment Specification
Mil-s-13924 military specification single treatment response
Thread Series Designator
Unrf
NSN
5305-01-421-9535
Part Number
16690-8F-28B
Description
Screw,cap,socket Head
CAGE
56878

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 16690-8F-28B NSN 5305-01-421-9535

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:
BA
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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