Model: 3M881

Assembled Washer Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.400 inches and 0.450 inches

Fastener Length

Between 0.722 inches and 0.752 inches

Head Style

Hexagon

Head Height

Between 0.125 inches and 0.140 inches

Width Between Flats

Between 0.430 inches and 0.439 inches

Washer Quantity

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

160000 pounds per square inch

Primary Washer Outside Diameter

Between 0.495 inches and 0.520 inches

Primary Washer Style

Flat

Primary Washer Material Thickness

Between 0.028 inches and 0.036 inches

Material

Aluminum alloy 2024 primary washer

Material

Titanium alloy fastener

Material Specification

Nas621 assn standard single material response fastener

Material Specification

Qq-a-250/5, t3 or t4 federal specification single material response primary washer

Surface Treatment

Anodize primary washer or chromate primary washer

Surface Treatment Specification

Mil-c-5541 military specification 2nd treatment response primary washer

Thread Series Designator

Unjf

NSN

5306-01-131-2903

Part Number

3M881

Description

Bolt,assembled Washer

CAGE

0PTK6

A bolt, machine on which has been assembled one or more nonremovable washers. See also screw, assembled washer.

Part 3M881 NSN 5306-01-131-2903

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06659

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:

013280

UFC:

05450

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 8109900000
SITC: 69987
End Use: Finished metal shapes
NAICS: 331491
USDA: 1

Freight Class: Zirconium and articles thereof nesoi