PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B13Packing Nut

Sloan Valve Company · NSN 4730-00-274-9255 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-274-9255 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-274-9255. Primary manufacturer part number: B13.
Features
  • Packing Nut — FSC 4730
  • Screw Thread Series Designator: NS
  • Width Across Flats: 0.563 INCHES NOMINAL IN
  • Smallest Inside Diameter: 0.281 INCHES NOMINAL IN
  • Length to Shoulder: 0.2657 INCHES NOMINAL IN
  • Screw Thread Location: INTERNAL
  • Material: NICKEL ALLOY
  • Material Document and Classification: MIL-N-294B1 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Nickel Alloy construction
General Description

The Packing Nut, cataloged under National Stock Number 4730-00-274-9255, 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 Sloan Valve Company. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4730-00-274-9255
Primary Part NumberB13
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSloan Valve Company
StatusCANCELLED
Screw Thread Series DesignatorNS
Width Across Flats0.563 INCHES NOMINAL IN
Smallest Inside Diameter0.281 INCHES NOMINAL IN
Length to Shoulder0.2657 INCHES NOMINAL IN
Screw Thread LocationINTERNAL
MaterialNICKEL ALLOY
Material Document and ClassificationMIL-N-294B1 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE
Style DesignatorHEXAGON, INTERNAL THREAD, SHOULDERED
Thread Class3B
Thread Size1/2 (0.500)IN. - 27
Thread Length0.250 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Thread DirectionRIGHT-HAND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5410-00-244-7322 INTERCHANGEABLE
Screen,window,metal
5950-00-290-7962B13 INTERCHANGEABLE
Transformer,power
B G Laboratories Inc.
5330-00-291-91511830 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
5905-00-502-2727 INTERCHANGEABLE
Resistor,fixed,wire Wound,nonind
5905-00-502-2729 INTERCHANGEABLE
Resistor,fixed,wire Wound,nonind
5905-00-502-2730 INTERCHANGEABLE
Resistor,fixed,wire Wound
5905-00-502-2733 INTERCHANGEABLE
Resistor,fixed,wire Wound,nonind
5905-00-502-2738 INTERCHANGEABLE
Resistor,fixed,wire Wound
5905-00-502-2749 INTERCHANGEABLE
Resistor,fixed,wire Wound
5905-00-502-2751 INTERCHANGEABLE
Resistor,fixed,wire Wound,nonind
Cross-Reference Index
Part NumberManufacturer
B13 PRIMARY Sloan Valve Company (USA)
Related Parts
5410-00-244-7322INTERCHANGEABLE
SCREEN,WINDOW,METAL
5950-00-290-7962INTERCHANGEABLE
TRANSFORMER,POWER
B13
5330-00-291-9151INTERCHANGEABLE
SEAL,PLAIN ENCASED
1830
5905-00-502-2727INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,NONIND
5905-00-502-2729INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,NONIND
5905-00-502-2730INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5905-00-502-2733INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,NONIND
5905-00-502-2738INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5905-00-502-2749INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5905-00-502-2751INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,NONIND
5999-00-769-4975INTERCHANGEABLE
HEATER,THERMAL RELEASE
5365-00-833-3743INTERCHANGEABLE
SHIM
B1-3

Frequently Asked Questions

What is NSN 4730-00-274-9255?

NSN 4730-00-274-9255 is a Packing Nut, manufactured by Sloan Valve Company, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-274-9255?

NSN 4730-00-274-9255 has 1 cross-referenced part number: B13 (Sloan Valve Company).

What NSN replaces 4730-00-274-9255?

There are 12 known substitutes for 4730-00-274-9255: 5410-00-244-7322, 5950-00-290-7962, 5330-00-291-9151 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B13?

Key specifications for B13: Screw Thread Series Designator: NS; Width Across Flats: 0.563 INCHES NOMINAL IN; Smallest Inside Diameter: 0.281 INCHES NOMINAL IN; Length to Shoulder: 0.2657 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-274-9255 still in active supply?

NSN 4730-00-274-9255 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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