PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1646Standoff,threaded,snap-in

Keystone Electronics Corp · NSN 5340-01-399-3829 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-399-3829 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-399-3829. Primary manufacturer part number: 1646.
Features
  • Standoff,threaded,snap-in — FSC 5340
  • Thread Quantity Per Inch: 32 RIGHT INTERNAL
  • Thread Direction: LEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
  • Nominal Thread Size: 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
  • Nominal Thread Size: 0.138 INCHES RIGHT INTERNAL IN
  • Thread Length: 0.250 INCHES NOMINAL RIGHT INTERNAL IN
  • Thread Direction: RIGHT-HAND RIGHT INTERNAL
  • Style Designator: LEFT INTERNAL AND RIGHT EXTERNAL THREAD
Applications
  • Applications requiring Copper Alloy Standoff construction
General Description

The Standoff,threaded,snap-in, cataloged under National Stock Number 5340-01-399-3829, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Keystone Electronics Corp. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-01-399-3829
Primary Part Number1646
Item NameStandoff,threaded,snap-in
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerKeystone Electronics Corp
StatusACTIVE
Thread Quantity Per Inch32 RIGHT INTERNAL
Thread DirectionLEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
Nominal Thread Size0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
Nominal Thread Size0.138 INCHES RIGHT INTERNAL IN
Thread Length0.250 INCHES NOMINAL RIGHT INTERNAL IN
Thread DirectionRIGHT-HAND RIGHT INTERNAL
Style DesignatorLEFT INTERNAL AND RIGHT EXTERNAL THREAD
Surface TreatmentNICKEL STANDOFF
MaterialCOPPER ALLOY STANDOFF
Thread Quantity Per Inch32 LEFT INTERNAL (INCLUDES THRU THREAD)
Length2.000 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) RIGHT INTERNAL
Right Projection Diameter0.138 INCHES NOMINAL IN
Thread Length0.375 INCHES NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) IN
Right Projection Length0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
Handle,bow
6625-00-041-2254MC136 INTERCHANGEABLE
Coupling Assy
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4710-00-097-15511646 INTERCHANGEABLE
Tube,metallic
King Engineering Corporation Dba King-Gage Systems
5950-00-226-6841D0T46 INTERCHANGEABLE
Transformer,audio Frequency
Magnetika Inc
5950-00-226-70562088861-0701 INTERCHANGEABLE
Transformer,audio Frequency
Honeywell International Inc Dba Honeywell
4730-00-289-2928 INTERCHANGEABLE
Fitting,lubrication
3120-00-354-84621646 INTERCHANGEABLE
Bushing,sleeve
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5330-00-733-0683 INTERCHANGEABLE
Gasket
4820-00-835-41421646 INTERCHANGEABLE
Seat,valve
Lawler Manufacturing Company, Inc.
5950-01-105-5196 INTERCHANGEABLE
Coil,electrical
Cross-Reference Index
Part NumberManufacturer
1646 PRIMARY Keystone Electronics Corp (USA)
Related Parts
5340-00-813-5827SUCCESSOR
HANDLE,BOW
6625-00-041-2254INTERCHANGEABLE
COUPLING ASSY
MC136
4710-00-097-1551INTERCHANGEABLE
TUBE,METALLIC
1646
5950-00-226-6841INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
D0T46
5950-00-226-7056INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
2088861-0701
4730-00-289-2928INTERCHANGEABLE
FITTING,LUBRICATION
3120-00-354-8462INTERCHANGEABLE
BUSHING,SLEEVE
1646
5330-00-733-0683INTERCHANGEABLE
GASKET
4820-00-835-4142INTERCHANGEABLE
SEAT,VALVE
1646
5950-01-105-5196INTERCHANGEABLE
COIL,ELECTRICAL
5355-01-296-7117INTERCHANGEABLE
KNOB
1646
3990-01-418-1732INTERCHANGEABLE
PALLET,MATERIAL STACKING
PAK210-WD

Frequently Asked Questions

What is NSN 5340-01-399-3829?

NSN 5340-01-399-3829 is a Standoff,threaded,snap-in, manufactured by Keystone Electronics Corp, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-399-3829?

NSN 5340-01-399-3829 has 1 cross-referenced part number: 1646 (Keystone Electronics Corp).

What NSN replaces 5340-01-399-3829?

There are 12 known substitutes for 5340-01-399-3829: 5340-00-813-5827, 6625-00-041-2254, 4710-00-097-1551 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1646?

Key specifications for 1646: Thread Quantity Per Inch: 32 RIGHT INTERNAL; Thread Direction: LEFT-HAND LEFT INTERNAL (INCLUDES THRU THREAD); Nominal Thread Size: 0.138 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN; Nominal Thread Size: 0.138 INCHES RIGHT INTERNAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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