PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1828Locknut,pipe

R.w. Fernstrum & Company · NSN 4730-01-048-9897 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-048-9897 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-048-9897. Primary manufacturer part number: 1828.
Features
  • Locknut,pipe — FSC 4730
  • Thread Quantity Per Inch: 8
  • Thread Direction: RIGHT-HAND
  • Material: COPPER ALLOY OVERALL
  • Width Across Flats: 3.812 INCHES NOMINAL IN
  • Thread Series: NPT
  • Nominal Thread Size: 2.500 INCHES IN
  • Nut Style: PIPE LOCKNUT
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Locknut,pipe, cataloged under National Stock Number 4730-01-048-9897, 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 R.w. Fernstrum & Company. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-048-9897
Primary Part Number1828
Item NameLocknut,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerR.w. Fernstrum & Company
StatusACTIVE
Thread Quantity Per Inch8
Thread DirectionRIGHT-HAND
MaterialCOPPER ALLOY OVERALL
Width Across Flats3.812 INCHES NOMINAL IN
Thread SeriesNPT
Nominal Thread Size2.500 INCHES IN
Nut StylePIPE LOCKNUT
Nut Height0.812 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-066-0927 INTERCHANGEABLE
Transformer,radio Frequency
2940-00-075-016174995265 INTERCHANGEABLE
Filter Element,fluid
Kalmar AC Inc
5325-00-282-2132 INTERCHANGEABLE
Grommet,nonmetallic
6240-00-299-61261828 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
4310-00-360-40761828 INTERCHANGEABLE
Intercooler,compressor
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
3040-00-423-80422968 INTERCHANGEABLE
Connecting Link,rigid
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5330-00-531-260921158-18 28 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5950-00-586-6943718899-027 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon
5975-00-660-5809 INTERCHANGEABLE
Coupling,electrical Conduit
6530-00-689-36711828 INTERCHANGEABLE
Headrest,surgical,cerebellar
Steris Corporation Dba Steris Applied Sterilization Technololgies
Cross-Reference Index
Part NumberManufacturer
A3328550 R.w. Fernstrum & Company (USA)
A3328550 Naval Sea Systems Command (USA)
1828 PRIMARY R.w. Fernstrum & Company (USA)
2868 R.w. Fernstrum & Company (USA)
A3328550REVA R.w. Fernstrum & Company (USA)
Related Parts
5950-00-066-0927INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
2940-00-075-0161INTERCHANGEABLE
FILTER ELEMENT,FLUID
74995265
5325-00-282-2132INTERCHANGEABLE
GROMMET,NONMETALLIC
6240-00-299-6126INTERCHANGEABLE
LAMP,INCANDESCENT
1828
4310-00-360-4076INTERCHANGEABLE
INTERCOOLER,COMPRESSOR
1828
3040-00-423-8042INTERCHANGEABLE
CONNECTING LINK,RIGID
2968
5330-00-531-2609INTERCHANGEABLE
SEAL,PLAIN ENCASED
21158-18 28
5950-00-586-6943INTERCHANGEABLE
REACTOR
718899-027
5975-00-660-5809INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
6530-00-689-3671INTERCHANGEABLE
HEADREST,SURGICAL,CEREBELLAR
1828
5910-00-798-5754INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
18-28
5940-00-892-7874INTERCHANGEABLE
TERMINAL,LUG
34128

Frequently Asked Questions

What is NSN 4730-01-048-9897?

NSN 4730-01-048-9897 is a Locknut,pipe, manufactured by R.w. Fernstrum & Company, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-048-9897?

NSN 4730-01-048-9897 has 5 cross-referenced part numbers: A3328550 (R.w. Fernstrum & Company), A3328550 (Naval Sea Systems Command), 1828 (R.w. Fernstrum & Company), 2868 (R.w. Fernstrum & Company), A3328550REVA (R.w. Fernstrum & Company).

What NSN replaces 4730-01-048-9897?

There are 12 known substitutes for 4730-01-048-9897: 5950-00-066-0927, 2940-00-075-0161, 5325-00-282-2132 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1828?

Key specifications for 1828: Thread Quantity Per Inch: 8; Thread Direction: RIGHT-HAND; Material: COPPER ALLOY OVERALL; Width Across Flats: 3.812 INCHES NOMINAL IN. 10 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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