PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2643Insulator,standoff

Dialight Corporation · NSN 5970-00-974-6499 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-974-6499 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-974-6499. Primary manufacturer part number: 2643.
Features
  • Insulator,standoff — FSC 5970
  • Thread Length: 0.156 INCHES NOMINAL IN
  • Thread Location: MOUNTING FACILITY AND ELECTRICAL TERMINATION
  • Outside Diameter: 0.375 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 1 THREADED HOLE(S)
  • Thread Class and Location: 2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITY
  • Screw Thread Quantity Per Inch and Location: 32 ELECTRICAL TERMINATION AND 32 MOUNTING FACILITY
  • Style Designator: PILLAR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulator,standoff, cataloged under National Stock Number 5970-00-974-6499, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Dialight Corporation. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-974-6499
Primary Part Number2643
Item NameInsulator,standoff
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerDialight Corporation
StatusCANCELLED
Thread Length0.156 INCHES NOMINAL IN
Thread LocationMOUNTING FACILITY AND ELECTRICAL TERMINATION
Outside Diameter0.375 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 THREADED HOLE(S)
Thread Class and Location2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITY
Screw Thread Quantity Per Inch and Location32 ELECTRICAL TERMINATION AND 32 MOUNTING FACILITY
Style DesignatorPILLAR
Screw Thread Diameter and Location0.138 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.138 MOUNTING FACILITY INCHES NOMINAL
Identification Code ColorWHITE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-117-5197 INTERCHANGEABLE
Insulator,standoff
6910-00-164-7181 INTERCHANGEABLE
Training Aid,optical
2010-00-362-68192-541 INTERCHANGEABLE
Cover,bearing
Hatch & Kirk, Inc.
5905-00-448-614226-43 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Agilent Technologies, Inc. Div Agilent Technologies Headquarters
9540-00-542-2739 INTERCHANGEABLE
Channel,structural
5905-00-931-695412-02643-0A INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ballantine Laboratories Inc
5905-00-994-19472643 INTERCHANGEABLE
Resistor,fixed,wire Wound
General Microwave Corporation Div Kratos Microwave Electronics
5340-01-120-73152643 INTERCHANGEABLE
Button,plug
Heyco Inc Dba Heyco Products
6515-01-260-12512643 INTERCHANGEABLE
Cuff,sphygmomanometer
Critikon Inc Sub of Johnson and Johnson
5340-01-275-80442643/CAT. 183 INTERCHANGEABLE
Plug,protective,dust and Moistur
Heyco Inc Dba Heyco Products
Cross-Reference Index
Part NumberManufacturer
2643 Dialight Corporation (USA)
NL633W01-004 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NS5W0104 Joint Army-Navy Specifications Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-I-23264/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NL533W01-004 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NL523W01-004 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2643 Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron (USA)
Related Parts
5970-00-117-5197INTERCHANGEABLE
INSULATOR,STANDOFF
6910-00-164-7181INTERCHANGEABLE
TRAINING AID,OPTICAL
2010-00-362-6819INTERCHANGEABLE
COVER,BEARING
2-541
5905-00-448-6142INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
26-43
9540-00-542-2739INTERCHANGEABLE
CHANNEL,STRUCTURAL
5905-00-931-6954INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
12-02643-0A
5905-00-994-1947INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
2643
5340-01-120-7315INTERCHANGEABLE
BUTTON,PLUG
2643
6515-01-260-1251INTERCHANGEABLE
CUFF,SPHYGMOMANOMETER
2643
5340-01-275-8044INTERCHANGEABLE
PLUG,PROTECTIVE,DUST AND MOISTUR
2643/CAT. 183
6145-01-326-5497INTERCHANGEABLE
CABLE,RADIO FREQUENCY
2643
5315-01-365-4353INTERCHANGEABLE
PIN,GROOVED,HEADLESS

Frequently Asked Questions

What is NSN 5970-00-974-6499?

NSN 5970-00-974-6499 is a Insulator,standoff, manufactured by Dialight Corporation, classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-974-6499?

NSN 5970-00-974-6499 has 7 cross-referenced part numbers: 2643 (Dialight Corporation), NL633W01-004 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), NS5W0104 (Joint Army-Navy Specifications Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-I-23264/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), NL533W01-004 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 5970-00-974-6499?

There are 12 known substitutes for 5970-00-974-6499: 5970-00-117-5197, 6910-00-164-7181, 2010-00-362-6819 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2643?

Key specifications for 2643: Overall Height: 0.500 INCHES NOMINAL IN; Thread Length: 0.156 INCHES NOMINAL IN; Thread Location: MOUNTING FACILITY AND ELECTRICAL TERMINATION; Outside Diameter: 0.375 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-974-6499 still in active supply?

NSN 5970-00-974-6499 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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