Model: 6160SS3520-7

Externally Relieved Body Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.359 inches and 0.391 inches

Fastener Length

Between 1.172 inches and 1.203 inches

Head Style

Knurled no. 1

Head Diameter

Between 0.745 inches and 0.755 inches

Head Height

Between 0.234 inches and 0.266 inches

First Diameter From Head

Between 0.170 inches and 0.180 inches

Distance From Largest Bearing Surface Of Head To End Of First Diameter

Between 0.783 inches and 0.844 inches

Internal Drive Style

Slot

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Externally Relieved Body Diameter Quantity

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 303

Material Specification

Astm a582 assn standard single material response

Surface Treatment

Passivate

Special Test Features

Special quality control testing

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Test Data Document

81349-mil-p-23199 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Thread Series Designator

Unc

Reference Number Differentiating Characteristics

As differentiated by material which must conform to ships parts control center special quality control provisions

NSN

5305-00-459-7401

Part Number

6160SS3520-7

Description

Screw,externally Relieved Body

CAGE

06540

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Part 6160SS3520-7 NSN 5305-00-459-7401

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01852

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