Model: FDC-7900-6-B-3

Panel Screw Assembly

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.188 inches and 0.218 inches

Fastener Length

Between 0.520 inches and 0.550 inches

Head Style

Pan no. 2

Head Diameter

Between 0.250 inches and 0.280 inches

Head Height

Between 0.065 inches and 0.095 inches

Internal Drive Style

Slot

Material Accommodated Thickness

Between 0.132 inches and 0.162 inches

Thread Diameter

0.138 inches

Thready Qty Per Inch (tpi)

Hardness Rating

34.0 rockwell c and 38.0 rockwell c

Part Name Assigned By Controlling Agency

Navy special project

Material

Copper alloy 360 stand-off

Material

Steel comp 4037 fastener

Material Specification

Qq-b-626, comp 22 federal specification single material response stand-off

Surface Treatment

Cadmium fastener

Surface Treatment

Cadmium stand-off

Surface Treatment Specification

Qq-p-416, type 1 cl 2 federal specification single treatment response fastener

Surface Treatment Specification

Qq-p-416, type 1 cl 2 federal specification single treatment response stand-off

Thread Series Designator

Unc

NSN

5305-01-194-0656

Part Number

FDC-7900-6-B-3

Description

Screw Assembly,panel

CAGE

0HDW7

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 FDC-7900-6-B-3 NSN 5305-01-194-0656

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:

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