Model: LK21090-0204

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.308 inches and 0.375 inches

Fastener Length

Between 0.344 inches and 0.375 inches

Head Style

Pan

Head Diameter

Between 0.155 inches and 0.167 inches

Head Height

Between 0.053 inches and 0.062 inches

Locking Feature

Pellet threads or strip threads

Internal Drive Style

Cross recess type 1

Thread Diameter

0.086 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

60000 pounds per square inch

Material

Steel

Material Specification

66 federal standard single material response or qq-s-633 federal specification single material response

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2 cl 3 federal specification all treatment responses

Thread Series Designator

Unc

Nondefinitive Specification/std Data

3 type and 9c style

NSN

5305-01-051-2444

Part Number

LK21090-0204

Description

Screw,cap,socket Head

CAGE

26304

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 LK21090-0204 NSN 5305-01-051-2444

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

096640

UFC:

50600

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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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