Model: MILB857

Square Neck Bolt

Special Features:

Furnished w/sq nut

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

4.500 inches

Head Style

Button

Head Diameter

Between 0.688 inches and 0.719 inches

Head Height

Between 0.156 inches and 0.176 inches

Neck Length

Between 0.250 inches and 0.281 inches

Thread Diameter

0.312 inches

Thready Qty Per Inch (tpi)

Neck Width

Between 0.307 inches and 0.324 inches

Material

Steel

Thread Series Designator

Unc

Nondefinitive Specification/std Data

V type and 1 grade

NSN

5306-00-260-7473

Part Number

MILB857

Description

Bolt,square Neck

CAGE

81349

A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.

Part MILB857 NSN 5306-00-260-7473

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15939

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:

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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