Model: GS550E4S16

Socket Head Cap Screw

Properties:

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.359 inches and 0.483 inches
Fastener Length
Between 0.969 inches and 1.031 inches
Head Style
Round extended washer
Head Diameter
0.437 inches
Head Height
Between 0.096 inches and 0.106 inches
Extended Washer Diameter
0.500 inches
Extended Washer Thickness
Between 0.028 inches and 0.033 inches
Locking Feature
Patch threads or pellet threads
Locking Feature
Patch or pellet threads
Internal Drive Style
Slot
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
125000 pounds per square inch
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4037 or steel comp 8630
Material
Steel comp 4037 or steel comp 8630
Surface Treatment
Cadmium or zinc
Surface Treatment
Cadmium or zinc
Surface Treatment Specification
Qq-p-416 federal specification 1st treatment response or qq-z-325 federal specification 2nd treatment response
Surface Treatment Specification
Qq-p-416 federal specification 1st treatment response or qq-z-325 federal specification 2nd treatment response
Thread Series Designator
Unf
NSN
5305-00-141-6218
Part Number
GS550E4S16
Description
Screw,cap,socket Head
CAGE
26512

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 GS550E4S16 NSN 5305-00-141-6218

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
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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