PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61857-1Packing Nut

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 4730-00-764-7769 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-764-7769 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-764-7769. Primary manufacturer part number: 61857-1.
Features
  • Packing Nut — FSC 4730
  • Major Unthreaded Outside Diameter: 1.000 INCHES NOMINAL IN
  • Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED
  • Length to Shoulder: 0.438 INCHES NOMINAL IN
  • Width Across Flats: 1.062 INCHES NOMINAL IN
  • Smallest Inside Diameter: 0.440 INCHES NOMINAL IN
  • Material: STEEL COMP 303
  • Casehardening Indicator: NOT CASEHARDENED
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Comp 303 construction
General Description

The Packing Nut, cataloged under National Stock Number 4730-00-764-7769, 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 L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-764-7769
Primary Part Number61857-1
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Major Unthreaded Outside Diameter1.000 INCHES NOMINAL IN
Style DesignatorHEXAGON, INTERNAL THREAD, SHOULDERED
Length to Shoulder0.438 INCHES NOMINAL IN
Width Across Flats1.062 INCHES NOMINAL IN
Smallest Inside Diameter0.440 INCHES NOMINAL IN
MaterialSTEEL COMP 303
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6130-00-643-4602BR1140 INTERCHANGEABLE
Rectifier,metallic
Eltek Energy Llc
6680-01-158-64806185-71 INTERCHANGEABLE
Flowmeter
Cooper Interconnect, Inc. Dba Cooper Interconnect Div Interconnect
5310-01-694-337861857-1 INTERCHANGEABLE
Washer,saddle
Triumph Controls, Llc Dba Triumph Controls, Llc
Cross-Reference Index
Part NumberManufacturer
61857-1 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
YA3502-1048P1 Raytheon Company Dba Raytheon Co (USA)
Related Parts
6130-00-643-4602INTERCHANGEABLE
RECTIFIER,METALLIC
BR1140
6680-01-158-6480INTERCHANGEABLE
FLOWMETER
6185-71
5310-01-694-3378INTERCHANGEABLE
WASHER,SADDLE
61857-1

Frequently Asked Questions

What is NSN 4730-00-764-7769?

NSN 4730-00-764-7769 is a Packing Nut, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-764-7769?

NSN 4730-00-764-7769 has 2 cross-referenced part numbers: 61857-1 (L3harris Technologies, Inc. Div Space and Airborne Systems), YA3502-1048P1 (Raytheon Company Dba Raytheon Co).

What NSN replaces 4730-00-764-7769?

There are 3 known substitutes for 4730-00-764-7769: 6130-00-643-4602, 6680-01-158-6480, 5310-01-694-3378. Verify interchangeability with system specifications before substitution.

What are the specifications of 61857-1?

Key specifications for 61857-1: Major Unthreaded Outside Diameter: 1.000 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED; Length to Shoulder: 0.438 INCHES NOMINAL IN; Width Across Flats: 1.062 INCHES NOMINAL IN. 8 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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