Model: SC2657-3-4P

Panel Fastener Screw

Properties:

Thread Class
3a
Thread Length
0.318 inches
Fastener Length
Between 0.746 inches and 0.776 inches
Head Style
Hexagon
Head Height
Between 0.110 inches and 0.125 inches
Width Between Flats
Between 0.367 inches and 0.376 inches
Internal Drive Style
Torque-set ribbed
Thread Diameter
0.190 inches
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
160000 pounds per square inch
Material
Iron alloy 660
Material Specification
Ams 5731 assn standard single material response or ams 5737 assn standard single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification all treatment responses
Thread Series Designator
Unjf
NSN
5305-01-443-8218
Part Number
SC2657-3-4P
Description
Screw,panel Fastener
CAGE
06950

A headed, threaded fastening device with special square threads, which is designed to be attached to a panel by means of a retaining washer. The screw fastener is used in conjunction with a speed nut to facilitate fastening two items.

Part SC2657-3-4P NSN 5305-01-443-8218

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
19665
FIIG:
A003B0
Concept No.:
App. Key:
SJ
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:
A
ESD:
ESD:
MMAC:
BA
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093490
UFC:
50270
LTL:
50.0
LCL:
--
WCC:
713
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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