Model: J644P28A

Machine Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.740 inches and 0.766 inches

Fastener Length

Between 2.115 inches and 2.135 inches

Head Style

Double hexagon extended washer

Head Height

Between 0.293 inches and 0.313 inches

Width Between Flats

0.3125 inches

Extended Washer Diameter

Between 0.428 inches and 0.448 inches

Extended Washer Thickness

Between 0.060 inches and 0.070 inches

Thread Diameter

0.250 inches

Grip Length

Between 1.369 inches and 1.375 inches

Features Provided

Finished head

Thready Qty Per Inch (tpi)

Surface Finish

32.0 microinches grip

Surface Finish

32.0 microinches threads

Material

Nickel alloy 718

Thread Series Designator

Unjf

NSN

5306-01-188-9179

Part Number

J644P28A

Description

Bolt,machine

CAGE

07482

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

Part J644P28A NSN 5306-01-188-9179

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01847

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: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)