Model: 8438732

Ribbed Shoulder Bolt

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 1.080 inches and 1.110 inches
Fastener Length
Between 2.140 inches and 2.160 inches
Head Style
Flat chamfer
Head Diameter
1.000 inches
Head Height
0.200 inches
Shoulder Diameter
0.520 inches first shoulder and 5.525 inches first shoulder
Shoulder Length
0.780 inches first shoulder
Rib Major Diameter
Between 0.550 inches and 0.560 inches
Rib Length
0.380 inches
Distance From Largest Diameter Of Bearing Surface Of Head To Ribs
0.060 inches
Rib Minor Diameter
Between 0.530 inches and 0.540 inches
Rib Quantity
35
Thread Diameter
0.437 inches
Thready Qty Per Inch (tpi)
20
Shoulder Shape
Round first shoulder
Material
Steel
Material Specification
Qq-s-624 federal specification single material response
Surface Treatment
Cadmium or zinc
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification 1st treatment response or qq-z-325, type 2, cl 3 federal specification 2nd treatment response
Thread Series Designator
Unf
NSN
5306-00-250-9687
Part Number
8438732
Description
Bolt,ribbed Shoulder
CAGE
19204

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 8438732 NSN 5306-00-250-9687

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:
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:
M
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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