Model: GS21-206R4X1-4

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.250 inches

Fastener Length

Between 0.219 inches and 0.250 inches

Head Style

Flat countersunk

Head Diameter

Between 0.244 inches and 0.279 inches

Internal Drive Style

Cross recess type 1

Thread Diameter

0.138 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

80000 pounds per square inch

Countersink Angle

82.0 degrees

Material

Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316

Material Specification

66 federal standard all material responses

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unc

NSN

5305-01-048-1125

Part Number

GS21-206R4X1-4

Description

Screw,cap,socket Head

CAGE

24930

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 GS21-206R4X1-4 NSN 5305-01-048-1125

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