Model: 20X403

Ribbed Shoulder Bolt

Properties:

Thread Class
3a
Thread Direction
Left-hand
Thread Length
1.187 inches
Fastener Length
2.562 inches
Head Style
Flat chamfer
Head Diameter
1.312 inches
Head Height
0.312 inches
Shoulder Diameter
0.971 inches first shoulder and 0.976 inches first shoulder
Shoulder Length
0.940 inches first shoulder
Rib Major Diameter
Between 0.998 inches and 1.008 inches
Rib Length
Between 0.560 inches and 0.622 inches
Distance From Largest Diameter Of Bearing Surface Of Head To Ribs
0.280 inches
Rib Minor Diameter
Between 0.926 inches and 0.930 inches
Rib Quantity
36
Thread Diameter
0.750 inches
Thready Qty Per Inch (tpi)
16
Rib Included Angle
90.0 degrees
Shoulder Shape
Ribbed first shoulder
Material
Steel
Surface Treatment
Cadmium and chromate
Thread Series Designator
Unf
NSN
5306-00-206-6339
Part Number
20X403
Description
Bolt,ribbed Shoulder
CAGE
72865

An externally threaded fastener whose threaded portion is of one nominal diameter. It has a series of longitudinal ribs, splines or serrations on all or a part of the shoulder. The minor diameter of the ribs must be greater than the major diameter of the threads. See also bolt, ribbed neck.

Part 20X403 NSN 5306-00-206-6339

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16014
FIIG:
A003B0
Concept No.:
App. Key:
BU
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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.7000lbs
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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