Model: 1A20306H01

Panel Screw Assembly

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.250 inches

Fastener Length

0.750 inches

Head Style

Hexagon

Head Height

Between 0.105 inches and 0.120 inches

Width Between Flats

Between 0.305 inches and 0.312 inches

Internal Drive Style

Slot

Material Accommodated Thickness

0.125 inches

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Hardness Rating

35.0 rockwell c secondary washer and 45.0 rockwell c secondary washer

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp 301 secondary washer or steel comp 302 secondary washersteel comp 301 primary washer or steel comp 302 primary washer or steel comp 302b primary washer or steel comp 303 primary washer or steel comp 303se primary washer or steel comp 304 primary washer or steel comp 304l primary washer or steel comp 305 primary washer or steel comp 308 primary washer or steel comp 309 primary washer or steel comp 309s primary washer or steel comp 310 primary washer or steel comp 310s primary washer or steel comp 314 primary washer or steel comp 316 primary washer or steel comp 316l primary washer or steel comp 317 primary washer or steel comp 321 primary washer or steel comp 347 primary washer or steel comp 348 primary washer or steel comp 384 primary washer or steel comp 385 primary washeraluminum alloy 7075 stand-offsteel comp 301 fastener or steel comp 302 fastener or steel comp 302b fastener or steel comp 303 fastener or steel comp 303se fastener or steel comp 304 fastener or steel comp 304l fastener or steel comp 305 fastener or steel comp 308 fastener or steel comp 309 fastener or steel comp 309s fastener or steel comp 310 fastener or steel comp 310s fastener or steel comp 314 fastener or steel comp 316 fastener or steel comp 316l fastener or steel comp 317 fastener or steel comp 321 fastener or steel comp 347 fastener or steel comp 348 fastener or steel comp 384 fastener or steel comp 385 fastener

Material Specification

Mil-s-5059 cond a military specification single material response secondary washerqq-a-225/8 t6 federal specification single material response stand-off

Surface Treatment

Passivate secondary washerpassivate primary washeranodize stand-offpassivate fastener

Surface Treatment Specification

Qq-p-35 federal specification single treatment response secondary washerqq-p-35 federal specification single treatment response primary washermil-8625 type 1, cl 1 military specification single treatment response stand-offqq-p-35 federal specification single treatment response fastener

Thread Series Designator

Unc

NSN

5305-01-340-5066

Part Number

1A20306H01

Description

Screw Assembly,panel

CAGE

97942

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 1A20306H01 NSN 5305-01-340-5066

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:

096640

UFC:

50600

LTL:

70.0

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