PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16821Packing Nut

Fmc Corp · NSN 4730-00-779-0980 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-779-0980 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-779-0980. Primary manufacturer part number: 16821.
Features
  • Packing Nut — FSC 4730
  • 2 verified cross-references
  • Primary manufacturer: Fmc Corp
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Packing Nut, cataloged under National Stock Number 4730-00-779-0980, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Fmc Corp. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePacking Nut
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersFmc Corp (CAGE 22888); Asset Systems, Inc. Dba Asset Systems Inc (CAGE 06350)
Technical Specifications
ParameterValue
NSN4730-00-779-0980
Primary Part Number16821
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFmc Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
4730-00-116-0477M-3932 INTERCHANGEABLE
Strainer,suction
Marvel Engineering Company Inc
5330-00-121-3075 INTERCHANGEABLE
Seal,oil
3020-00-431-183816821 INTERCHANGEABLE
Sprocket Wheel
Wausau Equipment Company Llc Dba Schmidt Engineering & Equipment Inc Div Wausau Equipment Llc
5342-01-013-6043 INTERCHANGEABLE
Bracket,clamp
5330-01-092-1443 INTERCHANGEABLE
Packing Assembly
6610-01-125-873716821 INTERCHANGEABLE
Solenoid Assembly,rotary
Astronautics Corporation of America
6685-01-147-852416-819 INTERCHANGEABLE
Gage,pressure,dial Indicating
Hess Manufacturing Inc Div Blast-It-All
5955-01-266-5768755090A0247-1 INTERCHANGEABLE
Crystal Unit,quartz
Marine Corps
5920-01-473-043716821 INTERCHANGEABLE
Fuse,cartridge
Itw Food Equipment Group Llc Dba Gaylord Industries
5920-01-605-31021682-1 INTERCHANGEABLE
Arrester,electrical Surge
Attwood Corp
Cross-Reference Index
Part NumberManufacturer
16821 PRIMARY Fmc Corp (USA)
16821 Asset Systems, Inc. Dba Asset Systems Inc (USA)
Related Parts
4730-00-116-0477INTERCHANGEABLE
STRAINER,SUCTION
M-3932
5330-00-121-3075INTERCHANGEABLE
SEAL,OIL
3020-00-431-1838INTERCHANGEABLE
SPROCKET WHEEL
16821
5342-01-013-6043INTERCHANGEABLE
BRACKET,CLAMP
5330-01-092-1443INTERCHANGEABLE
PACKING ASSEMBLY
6610-01-125-8737INTERCHANGEABLE
SOLENOID ASSEMBLY,ROTARY
16821
6685-01-147-8524INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
16-819
5955-01-266-5768INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
755090A0247-1
5920-01-473-0437INTERCHANGEABLE
FUSE,CARTRIDGE
16821
5920-01-605-3102INTERCHANGEABLE
ARRESTER,ELECTRICAL SURGE
1682-1
5305-01-720-5671INTERCHANGEABLE
SCREW,MACHINE
16821

Frequently Asked Questions

What is NSN 4730-00-779-0980?

NSN 4730-00-779-0980 is a Packing Nut, manufactured by Fmc Corp, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-779-0980?

NSN 4730-00-779-0980 has 2 cross-referenced part numbers: 16821 (Fmc Corp), 16821 (Asset Systems, Inc. Dba Asset Systems Inc).

What NSN replaces 4730-00-779-0980?

There are 11 known substitutes for 4730-00-779-0980: 4730-00-116-0477, 5330-00-121-3075, 3020-00-431-1838 and 8 more. Verify interchangeability with system specifications before substitution.

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