Model: MS21093-457

Machine Screw

Special Features:

Item is self-locking

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.625 inches

Fastener Length

0.625 inches

Head Style

Flat countersunk

Head Diameter

Between 0.477 inches and 0.507 inches

Internal Drive Style

Cross recess type 1

End Application

1520-01-471-6743

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Countersink Angle

Between 99.0 degrees and 101.0 degrees

Screw Material

Steel

Screw Material Specification

Fed-std-66 federal standard single material response

Screw Surface Treatment

Cadmium

Screw Surface Treatment Specification

Qq-p-416 type 2 cl 3 federal specification single treatment response

Thread Series Designator

Unf

NSN

5305-01-505-1705

Part Number

MS21093-457

Description

Screw,machine

CAGE

96906

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 MS21093-457 NSN 5305-01-505-1705

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:

0.1000lbs

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:

573

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