Model: NAS5312E4-20

Machine Screw

Special Features:

Essential to weapon system performance or operation, or the preservation of life or safety of operating personnel

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.144 inches

Fastener Length

1.250 inches

Head Style

Flat countersunk

Spline Major Diameter

Between 0.220 inches and 0.223 inches

Internal Drive Style

Torx

End Application

Mv-22 aircraft

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

5820 pounds per square inch

Countersink Angle

100.0 degrees

Criticality Code Justification

Feat

Part Name Assigned By Controlling Agency

Screw, 100 degree flush head, full thread, 6 lobe recess

Screw Material

Iron alloy 660

Screw Material Specification

Ams5731 assn standard single material response or ams5732 assn standard single material response or ams5737 assn standard single material response or ams5835 assn standard single material response

Screw Surface Treatment

Passivate

Screw Surface Treatment Specification

Ams2700method 1, type2 assn standard single treatment response or ams2700 method 1, type 8, cls 1 assn standard single treatment response

Thread Series Designator

Unjf

NSN

5305-01-529-3696

Part Number

NAS5312E4-20

Description

Screw,machine

CAGE

97499

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part NAS5312E4-20 NSN 5305-01-529-3696

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06657

FIIG:

A500D0

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:

011790

UFC:

04720

LTL:

RATING VARIABLE

LCL:

WCC:

671

TCC:

SHC:

ACC:

Equipment for Aircraft

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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