PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

178-031Nut,self-Locking,hexagon

Spaenaur Inc · NSN 5310-01-381-2298 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-381-2298 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-381-2298. Primary manufacturer part number: 178-031.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Width Across Flats: 2.715 INCHES MINIMUM AND 2.762 INCHES MAXIMUM IN
  • Thread Series: UNF
  • Material: STEEL OVERALL
  • Bearing Surface Type: CHAMFERED
  • Nominal Thread Size: 1.750 INCHES IN
  • Surface Treatment: ZINC AND CHROMATE OVERALL
  • Material: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE LOCKING INSERT
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-381-2298, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Spaenaur Inc. Government technical data includes 14 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-381-2298
Primary Part Number178-031
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerSpaenaur Inc
StatusACTIVE
Width Across Flats2.715 INCHES MINIMUM AND 2.762 INCHES MAXIMUM IN
Thread SeriesUNF
MaterialSTEEL OVERALL
Bearing Surface TypeCHAMFERED
Nominal Thread Size1.750 INCHES IN
Surface TreatmentZINC AND CHROMATE OVERALL
MaterialPLASTIC POLYHEXAMETHYLENE ADIPAMIDE LOCKING INSERT
Thread Quantity Per Inch12
Thread Class2B
Thread DirectionRIGHT-HAND
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Nut StyleHEXAGON
Temp Rating121.0 CELSIUS NOMINAL DEGC
Nut Height2.250 INCHES MINIMUM AND 2.376 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-108-9178 INTERCHANGEABLE
Bearing,ball,annular
5340-00-205-5313 INTERCHANGEABLE
Button,plug
5315-00-339-168619738 INTERCHANGEABLE
Pin,straight,headed
Rexnord Holdings Inc
5999-00-365-59119B6184 INTERCHANGEABLE
Contact,electrical
Caterpillar Inc Div Caterpillar Defense
4730-00-454-958919738 INTERCHANGEABLE
Connector,heater As
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5330-00-569-636519738 INTERCHANGEABLE
Gasket
Honeywell International Inc. Div Aerospace - Torrance
5999-01-049-1507 INTERCHANGEABLE
Shielding Gasket,electronic
5905-01-094-13450197380000 INTERCHANGEABLE
Resistor,fixed,wire Wound
Riimic, Llc Dba Sunair Electronics
5342-01-218-420019738 INTERCHANGEABLE
Yoke,castor
Kurz & Root Generator Company, Llc
6515-01-589-4118M33295 INTERCHANGEABLE
Hose,scavenger,anesthesia Machin
Draeger Inc
Cross-Reference Index
Part NumberManufacturer
19738 Liftking Manufacturing Corp (CAN)
178-031 PRIMARY Spaenaur Inc (CAN)
Related Parts
3110-00-108-9178INTERCHANGEABLE
BEARING,BALL,ANNULAR
5340-00-205-5313INTERCHANGEABLE
BUTTON,PLUG
5315-00-339-1686INTERCHANGEABLE
PIN,STRAIGHT,HEADED
19738
5999-00-365-5911INTERCHANGEABLE
CONTACT,ELECTRICAL
9B6184
4730-00-454-9589INTERCHANGEABLE
CONNECTOR,HEATER AS
19738
5330-00-569-6365INTERCHANGEABLE
GASKET
19738
5999-01-049-1507INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
5905-01-094-1345INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
0197380000
5342-01-218-4200INTERCHANGEABLE
YOKE,CASTOR
19738
6515-01-589-4118INTERCHANGEABLE
HOSE,SCAVENGER,ANESTHESIA MACHIN
M33295
5330-01-631-8591INTERCHANGEABLE
GASKET
6071-A102-136

Frequently Asked Questions

What is NSN 5310-01-381-2298?

NSN 5310-01-381-2298 is a Nut,self-Locking,hexagon, manufactured by Spaenaur Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-381-2298?

NSN 5310-01-381-2298 has 2 cross-referenced part numbers: 19738 (Liftking Manufacturing Corp), 178-031 (Spaenaur Inc).

What NSN replaces 5310-01-381-2298?

There are 11 known substitutes for 5310-01-381-2298: 3110-00-108-9178, 5340-00-205-5313, 5315-00-339-1686 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 178-031?

Key specifications for 178-031: Width Across Flats: 2.715 INCHES MINIMUM AND 2.762 INCHES MAXIMUM IN; Thread Series: UNF; Material: STEEL OVERALL; Bearing Surface Type: CHAMFERED. 14 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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