Model: S1-4-20X7-8N

Socket Head Cap Screw

Special Features:

Furnished with 1 silicone rubber o ring

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.825 inches

Fastener Length

0.875 inches

Head Style

Watertight

Head Diameter

0.493 inches

Head Height

0.148 inches

Locking Feature

Pellet threads

Internal Drive Style

Slot

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Part Name Assigned By Controlling Agency

Navy special project

Material

Stainless steel

Surface Treatment

Passivate

Thread Series Designator

Unc

NSN

5305-00-139-6547

Part Number

S1-4-20X7-8N

Description

Screw,cap,socket Head

CAGE

97539

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 S1-4-20X7-8N NSN 5305-00-139-6547

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:

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