Model: NAS144DH26R

Internal Wrenching Bolt

Special Features:

Threads have been rolled after heat treat

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.475 inches and 0.525 inches
Fastener Length
Between 1.610 inches and 1.640 inches
Head Style
Bevel-conical
Head Diameter
0.381 inches
Head Height
0.226 inches
Hole Diameter
Between 0.046 inches and 0.051 inches
Internal Drive Style
Hexagon
Thread Diameter
0.250 inches
Width Across Flats
Between 0.219 inches and 0.221 inches
Hole Quantity
6
Hole Type
Drilled
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
160000 pounds per square inch
Hardness Rating
34.0 rockwell c and 40.0 rockwell c
Hole Configuration Style
Round
Material
Steel comp 4140 or steel comp 4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2. Cl 2 federal specification single treatment response
Thread Series Designator
Unf
NSN
5306-01-572-6650
Part Number
NAS144DH26R
Description
Bolt,internal Wrenching
CAGE
80205

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 NAS144DH26R NSN 5306-01-572-6650

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:
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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