PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2-164Nut,plain,hexagon

Unison Industries Llc · NSN 5310-00-350-4055 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-350-4055 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-350-4055. Primary manufacturer part number: 2-164.
Features
  • Nut,plain,hexagon — FSC 5310
  • Thread Pitch Diameters: +0.2037 TO 0.2097 INCHES IN
  • Bearing Surface Type: CHAMFERED
  • Nominal Thread Size: 0.234 INCHES IN
  • Thread Quantity Per Inch: 25.4
  • Thread Series: UNS
  • Nut Style: HEXAGON
  • Width Across Flats: 0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-350-4055, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Unison Industries Llc. Government technical data includes 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5310-00-350-4055
Primary Part Number2-164
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUnison Industries Llc
StatusCANCELLED
Thread Pitch Diameters+0.2037 TO 0.2097 INCHES IN
Bearing Surface TypeCHAMFERED
Nominal Thread Size0.234 INCHES IN
Thread Quantity Per Inch25.4
Thread SeriesUNS
Nut StyleHEXAGON
Width Across Flats0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
MaterialSTEEL OVERALL
Material Document and ClassificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nut Height0.151 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-229-56122164 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Cinch Connectivity Solutions Inc.
5120-00-256-0651216-4 INTERCHANGEABLE
Punch and Die,grommet Inserting
C. S. Osborne and Company Dba Cs Osborne & Co
6145-00-284-0866 INTERCHANGEABLE
Braid,wire
4820-00-287-4606 INTERCHANGEABLE
Valve,angle
5331-00-449-24712-164 C1124-70 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5950-00-615-4525RD24298-1 INTERCHANGEABLE
Transformer,power
Raytheon Company
5310-00-634-91202164 INTERCHANGEABLE
Washer,flat
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
1680-00-737-93902164 INTERCHANGEABLE
Lever,swivel Contro
B/e Aerospace Inc Dba Interturbine
1377-00-739-88522164 INTERCHANGEABLE
Tube,breech,actuating and Lockin
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
6685-00-986-21232164 INTERCHANGEABLE
Case Assembly
Aerosonic Llc
Cross-Reference Index
Part NumberManufacturer
2-164 Amphenol Corp Div Amphenol Aerospace Operations (USA)
2-164 PRIMARY Unison Industries Llc (USA)
Related Parts
5935-00-229-5612INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
2164
5120-00-256-0651INTERCHANGEABLE
PUNCH AND DIE,GROMMET INSERTING
216-4
6145-00-284-0866INTERCHANGEABLE
BRAID,WIRE
4820-00-287-4606INTERCHANGEABLE
VALVE,ANGLE
5331-00-449-2471INTERCHANGEABLE
O-RING
2-164 C1124-70
5950-00-615-4525INTERCHANGEABLE
TRANSFORMER,POWER
RD24298-1
5310-00-634-9120INTERCHANGEABLE
WASHER,FLAT
2164
1680-00-737-9390INTERCHANGEABLE
LEVER,SWIVEL CONTRO
2164
1377-00-739-8852INTERCHANGEABLE
TUBE,BREECH,ACTUATING AND LOCKIN
2164
6685-00-986-2123INTERCHANGEABLE
CASE ASSEMBLY
2164
5360-01-076-6661INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5355-01-179-2195INTERCHANGEABLE
KNOB
2164

Frequently Asked Questions

What is NSN 5310-00-350-4055?

NSN 5310-00-350-4055 is a Nut,plain,hexagon, manufactured by Unison Industries Llc, classified under FSC 5310 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5310-00-350-4055?

NSN 5310-00-350-4055 has 2 cross-referenced part numbers: 2-164 (Amphenol Corp Div Amphenol Aerospace Operations), 2-164 (Unison Industries Llc).

What NSN replaces 5310-00-350-4055?

There are 12 known substitutes for 5310-00-350-4055: 5935-00-229-5612, 5120-00-256-0651, 6145-00-284-0866 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2-164?

Key specifications for 2-164: Thread Pitch Diameters: +0.2037 TO 0.2097 INCHES IN; Bearing Surface Type: CHAMFERED; Nominal Thread Size: 0.234 INCHES IN; Thread Quantity Per Inch: 25.4. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5310-00-350-4055 still in active supply?

NSN 5310-00-350-4055 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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