Model: 7649

Socket Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.750 inches
Fastener Length
0.750 inches
Head Style
Truss
Head Diameter
Between 0.546 inches and 0.573 inches
Head Height
Between 0.133 inches and 0.150 inches
Spline Minor Diameter
0.200 inches
Spline Major Diameter
0.200 inches
Internal Drive Style
Torx
End Application
3930-01-599-9978
Thread Diameter
0.2500 inches
Thready Qty Per Inch (tpi)
20
Min. Tensile Strength (psi)
60000 pounds per square inch
Part Name Assigned By Controlling Agency
1/4-20x3/4 zinc truss head six-lobe asme b18.6.3 fully threaded machine screw
Material
Steel
Material Specification
Carbon steel mfr ref single material response
Surface Treatment
Zinc
Surface Treatment Specification
Fe/zn 3at per astm f1941 assn standard single treatment response
Thread Series Designator
Unc
NSN
5305-01-616-5050
Part Number
7649
Description
Screw,cap,socket Head
CAGE
1NWY2

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 7649 NSN 5305-01-616-5050

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:
A
ESD:
A
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:
096640
UFC:
50600
LTL:
70.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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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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