Model: M020028-4

Internal Wrenching Bolt

Special Features:

Head straight knurled

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.370 inches and 0.390 inches
Fastener Length
Between 1.190 inches and 1.200 inches
Head Style
Flat chamfer
Head Diameter
Between 0.558 inches and 0.568 inches
Head Height
Between 0.370 inches and 0.380 inches
First Diameter From Head
Between 0.180 inches and 0.200 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.810 inches and 0.820 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
0.313 inches
Thready Qty Per Inch (tpi)
20
Material
Steel comp 302
Material Specification
Qq-s-763 federal specification single material response
Surface Treatment
Paint
Thread Series Designator
Unc
NSN
5306-00-766-5489
Part Number
M020028-4
Description
Bolt,internal Wrenching
CAGE
82300

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

Part M020028-4 NSN 5306-00-766-5489

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06666
FIIG:
A003B0
Concept No.:
App. Key:
BM
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:
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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