Model: 841581-77

Panel Screw Assembly

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.235 inches and 0.280 inches

Fastener Length

Between 1.235 inches and 1.265 inches

Head Style

Knurled no. 3

Head Diameter

Between 0.350 inches and 0.380 inches

Head Height

Between 0.118 inches and 0.148 inches

Internal Drive Style

Cross recess type 1

Material Accommodated Thickness

Between 0.063 inches and 0.125 inches

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Color

Black secondary washerblack primary washerblack stand-offblack fastener

Material

Steel comp 301 secondary washersteel comp 302 primary washersteel comp 302 springsteel comp 304 stand-offsteel comp 302 fastener

Material Specification

Mil-s-5059 military specification single material response secondary washerastm a493 assn standard single material response primary washerams 5688 assn standard single material response springqq-s-763 federal specification single material response stand-offastm a493 assn standard single material response fastener

Surface Treatment

Oxide secondary washeroxide primary washerpassivate springoxide stand-offoxide fastener

Surface Treatment Specification

Mil-c-13924 military specification single treatment response secondary washermil-c-13924 military specification single treatment response primary washerqq-p-35 federal specification single treatment response springmil-c-13924 military specification single treatment response stand-offmil-c-13924 military specification single treatment response fastener

Thread Series Designator

Unf

NSN

5305-01-339-2062

Part Number

841581-77

Description

Screw Assembly,panel

CAGE

06481

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 841581-77 NSN 5305-01-339-2062

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:

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