Model: 642AS0685-4

Panel Screw Assembly

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.490 inches

Fastener Length

Between 1.578 inches and 1.625 inches

Head Style

Flat countersunk undercut

Head Diameter

Between 0.377 inches and 0.381 inches

Head Height

0.080 inches

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Hardness Rating

36.0 rockwell c and 40.0 rockwell c

Countersink Angle

100.0 degrees

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 4130 or steel comp 4140 or steel comp e4340

Material Specification

Mil-s-6758 military specification 1st material response or mil-s-5626 military specification 2nd material response or mil-s-5000 military specification 3rd material response

Surface Treatment

Chromate and chromate

Surface Treatment Specification

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

Thread Series Designator

Unjf

NSN

5305-01-110-7866

Part Number

642AS0685-4

Description

Screw Assembly,panel

CAGE

30003

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

Part 642AS0685-4 NSN 5305-01-110-7866

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

33044

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:

093490

UFC:

50270

LTL:

50.0

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