Model: SC2657-3-8P

Panel Fastener Screw

Properties:

Thread Class
3a
Thread Length
0.318 inches
Fastener Length
Between 0.933 inches and 0.963 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 5737 assn standard single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416 ty2 federal specification single treatment response
Thread Series Designator
Unf
NSN
5305-01-384-2498
Part Number
SC2657-3-8P
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 SC2657-3-8P NSN 5305-01-384-2498

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

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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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