NSN 6640-01-294-3970 · NIIN 012943970 · Part number 173421
Hamilton Sundstrand Corporation Div Mission Systems · FSC 6640 — Laboratory Equipment and Supplies · FSG 66 — Instruments and Laboratory Equipment · CAGE 26581
Government record, cited
NSN 6640-01-294-3970 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-294-3970. Manufacturer of record part number: 173421.
Also searched as6640-01-294-3970 ·
6640012943970 ·
NIIN 012943970 ·
01-294-3970 ·
FSC 6640 Laboratory Equipment and Supplies · CAGE 26581 · 173421
Manufacturer of record: Hamilton Sundstrand Corporation Div Mission Systems
Identification
NSN: 6640-01-294-3970
NIIN: 012943970
FSC: 6640 — Laboratory Equipment and Supplies
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 173421
Manufacturer: Hamilton Sundstrand Corporation Div Mission Systems
General Description
The Contact Ring Set, cataloged under National Stock Number 6640-01-294-3970, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Hamilton Sundstrand Corporation Div Mission Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Contact Ring Set
FSC / FSG
6640 — Laboratory Equipment and Supplies (FSG 66)
Manufacturers
Hamilton Sundstrand Corporation Div Mission Systems (CAGE 26581)
Technical Specifications
Parameter
Value
NSN
6640-01-294-3970
Primary Part Number
173421
Item Name
Contact Ring Set
FSC / FSG
6640 / 66 — Laboratory Equipment and Supplies
Manufacturer
Hamilton Sundstrand Corporation Div Mission Systems
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Hamilton Sundstrand Corporation Div Mission Systems (USA)
No interchangeability data on file.
Other items in FSC 6640 — Laboratory Equipment and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6640-00-001-3348
6640-00-001-3348 · Item name not on file
6640-00-001-6670
LID,ANAEROBIC CULTURE APPARATUS
6640-00-001-6868
CONTROLLER,TIME AND TEMPERATURE,
6640-00-001-6871
6640-00-001-6871 · Item name not on file
6640-00-001-8928
6640-00-001-8928 · Item name not on file
6640-00-001-9167
6640-00-001-9167 · Item name not on file
6640-00-001-9168
6640-00-001-9168 · Item name not on file
6640-00-003-4362
6640-00-003-4362 · Item name not on file
Frequently Asked Questions
What is NSN 6640-01-294-3970?
NSN 6640-01-294-3970 is a Contact Ring Set, manufactured by Hamilton Sundstrand Corporation Div Mission Systems, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
What part numbers are listed for NSN 6640-01-294-3970?
NSN 6640-01-294-3970 has 1 manufacturer part number on file: 173421 (Hamilton Sundstrand Corporation Div Mission Systems).
Is NSN 6640-01-294-3970 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.