PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55946Nut,self-Locking,hexagon

Fasteners Inc. · NSN 5310-01-546-6139 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-546-6139 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-546-6139. Primary manufacturer part number: 55946.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Material: STEEL CORROSION RESISTING NUT
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
  • Thread Direction: RIGHT-HAND
  • Thread Class: 3A A
  • Nominal Thread Size: 0.250 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Thread Quantity Per Inch: 20
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Nut construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-546-6139, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fasteners Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5310-01-546-6139
Primary Part Number55946
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerFasteners Inc.
StatusACTIVE
MaterialSTEEL CORROSION RESISTING NUT
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Thread DirectionRIGHT-HAND
Thread Class3A A
Nominal Thread Size0.250 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Thread Quantity Per Inch20
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-00-152-619455946 INTERCHANGEABLE
Elbow,tube to Boss
Hamilton Sundstrand Corporation
5330-00-599-128511582 INTERCHANGEABLE
Gasket
Arvinmeritor Inc
5998-01-316-97525594-6 INTERCHANGEABLE
Circuit Card Assembly
Data Device Corp Dba Beta Transformer Technology
Cross-Reference Index
Part NumberManufacturer
55946 PRIMARY Fasteners Inc. (USA)
0120.025.01.11 PRIMARY Fasteners Inc. (USA)
Related Parts
4730-00-152-6194INTERCHANGEABLE
ELBOW,TUBE TO BOSS
55946
5330-00-599-1285INTERCHANGEABLE
GASKET
11582
5998-01-316-9752INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5594-6

Frequently Asked Questions

What is NSN 5310-01-546-6139?

NSN 5310-01-546-6139 is a Nut,self-Locking,hexagon, manufactured by Fasteners Inc., classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-546-6139?

NSN 5310-01-546-6139 has 2 cross-referenced part numbers: 55946 (Fasteners Inc.), 0120.025.01.11 (Fasteners Inc.).

What NSN replaces 5310-01-546-6139?

There are 3 known substitutes for 5310-01-546-6139: 4730-00-152-6194, 5330-00-599-1285, 5998-01-316-9752. Verify interchangeability with system specifications before substitution.

What are the specifications of 55946?

Key specifications for 55946: End Item Identification: 1940-01-526-7164, MK3 BRIDGE ERECTION BOAT; Special Features: MATERIAL IS 18-8 STAINLESS STEEL, INSERT IS NYLON; Material: STEEL CORROSION RESISTING NUT; Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. 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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