Model: 538157

Ribbed Shoulder Bolt

Special Features:

Head o/0.187 in. Lg extended washer

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.940 inches
Fastener Length
6.610 inches
Head Diameter
1.000 inches
Head Height
0.374 inches
Width Between Flats
0.250 inches
Shoulder Diameter
0.706 inches second shoulder and 0.707 inches second shoulder
Shoulder Diameter
0.706 inches first shoulder and 0.707 inches first shoulder
Shoulder Length
0.250 inches second shoulder
Shoulder Length
2.270 inches first shoulder
Rib Major Diameter
Between 0.706 inches and 0.707 inches
Rib Length
0.250 inches
Distance From Largest Diameter Of Bearing Surface Of Head To Ribs
5.360 inches
Rib Minor Diameter
0.641 inches
Rib Quantity
27
Thread Diameter
0.625 inches
Features Provided
Casehardened
Thready Qty Per Inch (tpi)
18
Min. Tensile Strength (psi)
200000 pounds per square inch
Shoulder Shape
Ribbed second shoulder
Shoulder Shape
Round first shoulder
Material
Steel
Material Specification
Ams6415 assn standard single material response or mil-s-5000 military specification single material response
Surface Treatment
Cadmium or chromium
Surface Treatment Specification
Qq-p-416 type 1 federal specification 1st treatment response or mil-p-6871 military specification 2nd treatment response
Thread Series Designator
Unf
NSN
5306-00-304-6121
Part Number
538157
Description
Bolt,ribbed Shoulder
CAGE
17576

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 538157 NSN 5306-00-304-6121

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

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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