Model: 20X411

Ribbed Shoulder Bolt

Properties:

Thread Class
3a
Thread Direction
Left-hand
Thread Length
Between 1.390 inches and 1.410 inches
Fastener Length
6.062 inches
Head Style
Flat chamfer
Head Diameter
Between 1.310 inches and 1.350 inches
Head Height
Between 0.302 inches and 0.322 inches
Shoulder Diameter
0.875 inches second shoulder and 0.890 inches second shoulder
Shoulder Diameter
0.971 inches first shoulder and 0.976 inches first shoulder
Shoulder Length
1.250 inches first shoulder
Shoulder Length
3.250 inches second shoulder
Rib Major Diameter
Between 0.998 inches and 1.006 inches
Rib Length
0.560 inches
Distance From Largest Diameter Of Bearing Surface Of Head To Ribs
Between 0.349 inches and 0.411 inches
Thread Diameter
0.750 inches
Thready Qty Per Inch (tpi)
16
Hardness Rating
223.0 brinell hultgren and 277.0 brinell hultgren
Shoulder Shape
Round all shoulders
Material
Steel comp 5135 or steel comp 5140 or steel comp 8637 or steel comp 8740 or steel comp 4135 or steel comp 4137 or steel comp 4140 or steel comp 8640
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification all treatment responses
Thread Series Designator
Unf
NSN
5306-00-569-9018
Part Number
20X411
Description
Bolt,ribbed Shoulder
CAGE
78500

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 20X411 NSN 5306-00-569-9018

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:
U
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.1000lbs
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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