Model: LK21093-0409

Machine Screw

Properties:

Thread Class
2a
Thread Direction
Right-hand
Thread Length
Between 0.121 inches and 0.210 inches
Fastener Length
Between 0.219 inches and 0.250 inches
Head Style
Flat countersunk
Head Diameter
Between 0.200 inches and 0.225 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.112 inches
Thready Qty Per Inch (tpi)
40
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Screw Material
Steel
Screw Material Specification
Qq-s-637 federal specification single material response
Screw Surface Treatment
Cadmium and chromate
Screw Surface Treatment Specification
Qq-p-416 type 2 cl 3 federal specification single treatment response
Thread Series Designator
Unc
Nondefinitive Specification/std Data
3 type or 3c style
Departure From Cited Designator
As modified by locking feature
NSN
5305-00-115-3031
Part Number
LK21093-0409
Description
Screw,machine
CAGE
26304

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

Part LK21093-0409 NSN 5305-00-115-3031

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
Concept No.:
App. Key:
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:
SX
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:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
713
TCC:
Z
SHC:
9
ACC:
Construction Materials

End Items End applications NSN 5305-00-115-3031 is a component of

  • C-2a (reprocured) Aircraft
  • Lightweight 3d (an/tps-59) Radar Set
  • Mh-53e Helicopter
  • Ah-1w Advance Attack Helicopter
  • Sh-60f Carrier Based Asw Helicopter
  • Hh-60h Search And Rescue Helicopter
  • Hh-60j Uscg Search And Rescue Helicopter
  • Comm. Tech. (06m Jul83) (an/tsq-84) Control Center
  • Apx-72 Airborne Radar
  • Tam A26357 Telephone Set
  • 005089183
  • Linear Electro-mechanical Actuator
  • 001675539
  • Circuit Card Assembly
  • 011384128
  • Cockpi Control Unit
  • 012047687
  • Power Supply
  • 010456061
  • Electrical-electronic Equipment Control Panel
  • 010366886
  • Aircraft General Purpose Dispenser
  • 010366886
  • Aircraft General Purpose Dispenser
  • 012375871
  • Linear Electro-mechanical Actuator
  • 013119617
  • Power Supply

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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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