Model: S1-4-20X7-8N

Socket Head Cap Screw

Special Features:

Furnished with 1 silicone rubber o ring

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.825 inches
Fastener Length
0.875 inches
Head Style
Watertight
Head Diameter
0.493 inches
Head Height
0.148 inches
Locking Feature
Pellet threads
Internal Drive Style
Slot
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Part Name Assigned By Controlling Agency
Navy special project
Material
Stainless steel
Surface Treatment
Passivate
Thread Series Designator
Unc
NSN
5305-00-139-6547
Part Number
S1-4-20X7-8N
Description
Screw,cap,socket Head
CAGE
97539

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Part S1-4-20X7-8N NSN 5305-00-139-6547

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16282
FIIG:
A003B0
Concept No.:
App. Key:
SC
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:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
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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