Model: MT58

Square Neck Bolt
Description:

2a thread class, right-hand , 0.375 inches thread length, 0.750 inches fastener length, button head style, 0.782 inches head diameter.

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.375 inches
Fastener Length
0.750 inches
Head Style
Button
Head Diameter
Between 0.782 inches and 0.844 inches
Head Height
Between 0.188 inches and 0.208 inches
Neck Length
Between 0.188 inches and 0.219 inches
Thread Diameter
0.375 inches
Thready Qty Per Inch (tpi)
16
Min. Tensile Strength (psi)
55000 pounds per square inch
Hardness Rating
95.0 rockwell b
Minimum Yield Strength
40000 pounds per square inch
Neck Width
Between 0.368 inches and 0.388 inches
Material
Steel
Material Specification
Gm 255m, general motors corporation mfr ref single material response
Surface Treatment
Zinc
Surface Treatment Specification
4252-m fscm 24617 mfr ref single treatment response
Thread Series Designator
Unc
NSN
5306-00-012-6227
Part Number
MT58
Description
Bolt,square Neck
CAGE
26051

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

Part MT58 NSN 5306-00-012-6227

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
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

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