Model: MILB857

Square Neck Bolt

Special Features:

Furnished w/sq nut

Properties:

Thread Class
2a
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)
18
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:
CA
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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

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