PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68-1660-24Nut,self-Locking,single Ball Sea

Esna, Llc · NSN 5310-01-116-4426 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-116-4426 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-116-4426. Primary manufacturer part number: 68-1660-24.
Features
  • Nut,self-Locking,single Ball Sea — FSC 5310
  • Width Across Flats: 0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
  • Nominal Thread Size: 0.086 INCHES IN
  • Thread Class: 3B
  • Nut Height: 0.080 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
  • Thread Series: UNF
  • Locking Feature: PREVAILING TORQUE WITH NONMETALLIC INSERT
  • Nut Style: SINGLE BALL SEAT, HEXAGON
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Aluminum Alloy 2011 Overall construction
General Description

The Nut,self-Locking,single Ball Sea, cataloged under National Stock Number 5310-01-116-4426, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Esna, Llc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5310-01-116-4426
Primary Part Number68-1660-24
Item NameNut,self-Locking,single Ball Sea
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEsna, Llc
StatusACTIVE
Width Across Flats0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
Nominal Thread Size0.086 INCHES IN
Thread Class3B
Nut Height0.080 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
Thread SeriesUNF
Locking FeaturePREVAILING TORQUE WITH NONMETALLIC INSERT
Nut StyleSINGLE BALL SEAT, HEXAGON
MaterialALUMINUM ALLOY 2011 OVERALL
Thread Quantity Per Inch64
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6680-00-174-6148113944-008 INTERCHANGEABLE
Counter,rotating
Dynapar Corp Div Specialty Product Technologies
5310-00-688-126610392323 INTERCHANGEABLE
Nut,self-Locking,hexagon
Us Army Aviation and Missile Command
5320-00-752-01785146183 INTERCHANGEABLE
Rivet,tubular
Army, United States Department of the Dba Rock Island Arsenal Jmtc
Cross-Reference Index
Part NumberManufacturer
68-1660-24 PRIMARY Esna, Llc (USA)
68-1660-24 Harvard Industries Inc (USA)
14209-2 Aerosonic Llc (USA)
Related Parts
6680-00-174-6148INTERCHANGEABLE
COUNTER,ROTATING
113944-008
5310-00-688-1266INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
10392323
5320-00-752-0178INTERCHANGEABLE
RIVET,TUBULAR
5146183

Frequently Asked Questions

What is NSN 5310-01-116-4426?

NSN 5310-01-116-4426 is a Nut,self-Locking,single Ball Sea, manufactured by Esna, Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-116-4426?

NSN 5310-01-116-4426 has 3 cross-referenced part numbers: 68-1660-24 (Esna, Llc), 68-1660-24 (Harvard Industries Inc), 14209-2 (Aerosonic Llc).

What NSN replaces 5310-01-116-4426?

There are 3 known substitutes for 5310-01-116-4426: 6680-00-174-6148, 5310-00-688-1266, 5320-00-752-0178. Verify interchangeability with system specifications before substitution.

What are the specifications of 68-1660-24?

Key specifications for 68-1660-24: Width Across Flats: 0.150 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN; Nominal Thread Size: 0.086 INCHES IN; Thread Class: 3B; Nut Height: 0.080 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN. 9 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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