Model: 20565-01

Internal Wrenching Bolt
Description:

3a thread class, right-hand , 0.304 inches thread length, 0.609 inches fastener length, 0.262 inches head diameter, 0.159 inches head height.

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.304 inches
Fastener Length
Between 0.609 inches and 0.641 inches
Head Diameter
Between 0.262 inches and 0.270 inches
Head Height
Between 0.159 inches and 0.164 inches
First Diameter From Head
Between 0.095 inches and 0.097 inches
Second Diameter From Head
Between 0.260 inches and 0.270 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.185 inches and 0.195 inches
Distance From Largest Bearing Surface Of Head To End Of Second Diameter
Between 0.225 inches and 0.245 inches
Internal Drive Style
Hexagon
Thread Diameter
0.138 inches
Width Across Flats
Between 0.140 inches and 0.142 inches
Thready Qty Per Inch (tpi)
32
Hardness Rating
34.0 rockwell c and 40.0 rockwell c
Hardness Rating
34.0 rockwell c and 40.0 rockwell c
Surface Finish
63.0 microinches bearing surface of head
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 416
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 type 2 federal specification single treatment response
Thread Series Designator
Unc
NSN
5306-00-004-5125
Part Number
20565-01
Description
Bolt,internal Wrenching
CAGE

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 20565-01 NSN 5306-00-004-5125

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

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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