Model: MS20004-29

Internal Wrenching Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.475 inches
Fastener Length
Between 2.297 inches and 2.327 inches
Head Style
Bevel-conical
Head Diameter
Between 0.428 inches and 0.438 inches
Head Height
0.250 inches
Hole Diameter
Between 0.037 inches and 0.042 inches
Internal Drive Style
Hexagon
End Application
Spec item
Thread Diameter
0.248 inches
Width Across Flats
Between 0.188 inches and 0.190 inches
Hole Quantity
2
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
Thread Pitch In Millimeters
1.0
Hole Configuration Style
Round internal hexagon
Part Name Assigned By Controlling Agency
Bolts internal wrenching 160 ksi ftu and 96 ksi fsu
Material
Steel comp 4340 and steel comp 4140 and steel comp 8740 and steel comp 8735 and steel comp 4340h and steel comp 4140
Material Specification
Nas-20004 national std/spec single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416 type 2 class 2 federal specification single treatment response
Thread Series Designator
Unjf
Specification Data
Nas-20004 national std/spec
NSN
5306-01-560-8002
Part Number
MS20004-29
Description
Bolt,internal Wrenching
CAGE
96906

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 MS20004-29 NSN 5306-01-560-8002

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
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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