PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DR1821Contact Set,distributor

Tungsten Contact Mfg Co Inc · NSN 2920-00-640-7704 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-640-7704 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-640-7704. Primary manufacturer part number: DR1821.
Features
  • Contact Set,distributor — FSC 2920
  • Accessory Components and Quantity: MOVEABLE ARM 1; STATIONARY ARM 1
  • Contact Type: BUTTON
  • Contact Quantity: 2
  • 14 verified cross-references
  • Primary manufacturer: Tungsten Contact Mfg Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Contact Set,distributor, cataloged under National Stock Number 2920-00-640-7704, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Tungsten Contact Mfg Co Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 12 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
NSN2920-00-640-7704
Primary Part NumberDR1821
Item NameContact Set,distributor
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerTungsten Contact Mfg Co Inc
StatusCANCELLED
Accessory Components and QuantityMOVEABLE ARM 1; STATIONARY ARM 1
Contact TypeBUTTON
Contact Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5945-00-116-5147 INTERCHANGEABLE
Relay,reed
2920-00-182-86051882021 INTERCHANGEABLE
Contact Set,distributor
Borgwarner Pds (anderson), L.l.c.
5330-00-189-94245M988-5 INTERCHANGEABLE
Gasket
The Boeing Company Div Defense
5940-00-204-8966MS25036-102 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
5342-00-216-9527D109 INTERCHANGEABLE
Bracket,shaft,front
Insinger Machine Co
6540-00-261-7238 INTERCHANGEABLE
Measure,lens,ophthalmic
3810-00-352-5718 INTERCHANGEABLE
Cartridge
1650-00-438-691211-675-2-2 INTERCHANGEABLE
Boot,deicer
Goodrich Corporation
5310-00-602-88543521-6 INTERCHANGEABLE
Nut
Gc/waldom Inc
6645-00-618-9496 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
DR1821 Tungsten Contact Mfg Co Inc (USA)
35216 Colson Corp the (USA)
D109 General Motors Corp Delco Remy Div (USA)
1855520 Clark Equipment Co (USA)
07-852107 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
1855520 General Motors Corp (USA)
1855520 General Motors Corp AC-Delco Div Government Order Dept (USA)
251Z12D5 Liquid Air Corp Industrial Gases Div (USA)
07-852107 Tvh Parts Co. (USA)
1855520 General Motors Llc Dba General Motors Llc (USA)
852107 Clark Material Handling Company (USA)
852107 Clark Equipment Co (USA)
1855520 Borgwarner Pds (anderson), L.l.c. (USA)
1855520 General Motors Corp Delco Remy Div (USA)
Related Parts
5945-00-116-5147INTERCHANGEABLE
RELAY,REED
2920-00-182-8605INTERCHANGEABLE
CONTACT SET,DISTRIBUTOR
1882021
5330-00-189-9424INTERCHANGEABLE
GASKET
5M988-5
5940-00-204-8966INTERCHANGEABLE
TERMINAL,LUG
MS25036-102
5342-00-216-9527INTERCHANGEABLE
BRACKET,SHAFT,FRONT
D109
6540-00-261-7238INTERCHANGEABLE
MEASURE,LENS,OPHTHALMIC
3810-00-352-5718INTERCHANGEABLE
CARTRIDGE
1650-00-438-6912INTERCHANGEABLE
BOOT,DEICER
11-675-2-2
5310-00-602-8854INTERCHANGEABLE
NUT
3521-6
6645-00-618-9496INTERCHANGEABLE
METER,TIME TOTALIZING
3455-01-046-1475INTERCHANGEABLE
CUTTER,MILLING,END
2030-01-093-4825INTERCHANGEABLE
BLOCK,GUIDING
8-52T-07

Frequently Asked Questions

What is NSN 2920-00-640-7704?

NSN 2920-00-640-7704 is a Contact Set,distributor, manufactured by Tungsten Contact Mfg Co Inc, classified under FSC 2920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2920-00-640-7704?

NSN 2920-00-640-7704 has 14 cross-referenced part numbers: DR1821 (Tungsten Contact Mfg Co Inc), 35216 (Colson Corp the), D109 (General Motors Corp Delco Remy Div), 1855520 (Clark Equipment Co), 07-852107 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the) and 9 more.

What NSN replaces 2920-00-640-7704?

There are 12 known substitutes for 2920-00-640-7704: 5945-00-116-5147, 2920-00-182-8605, 5330-00-189-9424 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of DR1821?

Key specifications for DR1821: Accessory Components and Quantity: MOVEABLE ARM 1; STATIONARY ARM 1; Contact Type: BUTTON; Contact Quantity: 2. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2920-00-640-7704 still in active supply?

NSN 2920-00-640-7704 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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