Model: B.18.5.2.1

Square Neck Bolt

Properties:

Thread Direction
Right-hand
Thread Length
38.0 millimeters
Fastener Length
40.0 millimeters
Head Style
Round
Head Diameter
35.0 millimeters
Head Height
Between 8.0 millimeters and 8.9 millimeters
Neck Length
Between 20.5 millimeters and 23.6 millimeters
Thread Diameter
16.0 millimeters
Thread Pitch In Millimeters
2.0
External Thread Tolerance Class
6g
Neck Width
Between 2.4 millimeters and 3.0 millimeters
Material
Stainless steel
Thread Series Designator
M
NSN
5306-01-545-3643
Part Number
B.18.5.2.1
Description
Bolt,square Neck
CAGE
80204

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

Part B.18.5.2.1 NSN 5306-01-545-3643

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:
A
ESD:
A
ESD:
A
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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