Model: 642-1256-001

Round Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Counterbore Diameter

0.328 inches first end

Nut Style

Round

Nut Diameter

0.562 inches

Nut Thickness

0.500 inches

Nut Counterbore Depth

0.300 inches first end

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.312 inches

Countersink Angle

80.0 degrees first end and 100.0 degrees first end

Material

Steel comp 303

Material Specification

Astm a582 assn standard single material response

Surface Treatment

Passivate

Surface Treatment Specification

580-0025-000, fscm 13499 mfr ref single treatment response

NSN

5310-01-167-6328

Part Number

642-1256-001

Description

Nut,plain,round

CAGE

13499

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 642-1256-001 NSN 5310-01-167-6328

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15887

FIIG:

A021A0

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: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel