Model: 16990L4C32

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

2.000 inches

Head Style

Flat countersunk

Head Diameter

Between 0.480 inches and 0.581 inches

Locking Feature

Patch threads

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

0.156 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

160000 pounds per square inch

Countersink Angle

81.0 degrees

Material

Steel

Material Specification

66 federal standard single material response

Thread Series Designator

Unc

NSN

5305-00-126-9994

Part Number

16990L4C32

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 16990L4C32 NSN 5305-00-126-9994

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