Model: 16690-8F-28B

Socket Head Cap Screw

Properties:

Thread Class

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)

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:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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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