Model: GS550E3S18

Socket Head Cap Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.359 inches and 0.453 inches

Fastener Length

Between 1.094 inches and 1.156 inches

Head Style

Round extended washer

Head Diameter

Between 0.365 inches and 0.385 inches

Head Height

Between 0.089 inches and 0.099 inches

Extended Washer Diameter

Between 0.427 inches and 0.447 inches

Extended Washer Thickness

Between 0.025 inches and 0.030 inches

Locking Feature

Patch threads or strip threads

Internal Drive Style

Slot

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

125000 pounds per square inch

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 4037 or steel comp 8630

Material Specification

Ams 6300 assn standard 1st material response or mil-s-6050 military specification 2nd material response

Surface Treatment

Cadmium or zinc

Surface Treatment Specification

Qq-p-416 federal specification 1st treatment response or qq-z-325 federal specification 2nd treatment response

Thread Series Designator

Unf

NSN

5305-01-025-6418

Part Number

GS550E3S18

Description

Screw,cap,socket Head

CAGE

26512

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 GS550E3S18 NSN 5305-01-025-6418

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

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