Model: 6744238-21

Socket Head Cap Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.915 inches and 1.069 inches
Fastener Length
Between 1.320 inches and 1.380 inches
Head Style
Flat countersunk
Head Diameter
Between 0.872 inches and 0.938 inches
Internal Drive Style
Hexagon
Thread Diameter
0.500 inches
Width Across Flats
0.312 inches
Thready Qty Per Inch (tpi)
13
Countersink Angle
Between 80.0 degrees and 84.0 degrees
Material
Nickel alloy 400
Material Specification
Qq-n-281 federal specification single material response
Thread Series Designator
Unc
NSN
5305-01-139-6079
Part Number
6744238-21
Description
Screw,cap,socket Head
CAGE
53711

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 6744238-21 NSN 5305-01-139-6079

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
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:
139820
UFC:
70220
LTL:
85.0
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7508900000
  • SITC: 69975
  • End Use: Finished metal shapes
  • NAICS: 332999
  • USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)

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