Model: ST3M550A8-21

Pin-rivet

Properties:

Thread Class
3a
Thread Direction
Right-hand
Fastener Length
Between 1.987 inches and 2.007 inches
Head Style
Flush countersunk
Width Between Flats
Between 0.2207 inches and 0.2242 inches
Shank Diameter
Between 0.5297 inches and 0.5307 inches
Shank Style
Pin-rivet, straight, threaded
Head Major Diameter
Between 0.7792 inches and 0.7852 inches
Lubrication
Cetyl alcohol
Grip Length
1.317 inches
Min. Tensile Strength (psi)
160000 pounds per square inch
Thread Size
0.500 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
5320-00-231-5047
Part Number
ST3M550A8-21
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 ST3M550A8-21 NSN 5320-00-231-5047

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:
095190
UFC:
49790
LTL:
70.0
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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