Model: ST3M550A4-31

Pin-rivet

Properties:

Thread Class
3a
Thread Direction
Right-hand
Fastener Length
Between 2.328 inches and 2.348 inches
Head Style
Flush countersunk
Width Between Flats
Between 0.094 inches and 0.096 inches
Shank Diameter
Between 0.2797 inches and 0.2807 inches
Shank Style
Pin-rivet, straight, threaded
Head Major Diameter
Between 0.421 inches and 0.426 inches
Lubrication
Cetyl alcohol
Grip Length
1.943 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
160000 pounds per square inch
Thread Size
0.250 inches
Shear Strength
95000 single pounds per square inch
Countersink Angle
100.0 degrees
Material
Steel comp e4340 or steel comp 4340 or steel comp 4140 or steel comp 8740
Material Specification
Mil-s-5000 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-5626 military specification 3rd material response or mil-s-6049 military specification 4th material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Thread Series Designator
Unjf
NSN
5320-00-279-9589
Part Number
ST3M550A4-31
Description
Pin-rivet
CAGE
76301

A metallic or nonmetallic item, headed at one end, with a cylindrically shaped shank which may be tapered, grooved, or threaded. a locking collar or sleeve may be provided to perform the same holding action as the clinching portion of a conventional rivet. the shank may include an external wrenching facility which breaks off at a predetermined applied torque.

Part ST3M550A4-31 NSN 5320-00-279-9589

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
67165
FIIG:
A528U0
Concept No.:
App. Key:
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:
0.1000lbs
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:
106510
UFC:
54760
LTL:
50.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7318230000
  • SITC: 69422
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Rivets of iron or steel

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