Model: SP8550

Machine Bolt

Special Features:

Unthreaded portion of shank 0.244 to 0.250 in. Dia

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.250 inches

Fastener Length

Between 0.490 inches and 0.500 inches

Head Style

Square extended washer

Head Height

Between 0.500 inches and 0.510 inches

Width Between Flats

Between 0.245 inches and 0.250 inches

Extended Washer Diameter

Between 0.368 inches and 0.382 inches

Extended Washer Thickness

Between 0.125 inches and 0.135 inches

Thread Diameter

0.250 inches

Features Provided

Finished head

Thready Qty Per Inch (tpi)

Hardness Rating

20.0 rockwell c and 26.0 rockwell c

Material

Steel

Material Specification

Mil-s-890, alloy no. 3 military specification single material response

Thread Series Designator

Unf

NSN

5306-00-270-7354

Part Number

SP8550

Description

Bolt,machine

CAGE

10001

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 SP8550 NSN 5306-00-270-7354

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:

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