PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52NU066Nut,self-Locking,hexagon

Esna, Llc · NSN 5310-00-050-3275 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-050-3275 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-050-3275. Primary manufacturer part number: 52NU066.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Nominal Thread Size: 0.375 INCHES IN
  • Thread Quantity Per Inch: 16
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Material Document and Classification: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL OVERALL
  • Width Across Flats: 0.688 INCHES NOMINAL IN
  • Nut Height: 0.547 INCHES NOMINAL IN
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 5310-00-050-3275, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-050-3275
Primary Part Number52NU066
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerEsna, Llc
StatusACTIVE
Nominal Thread Size0.375 INCHES IN
Thread Quantity Per Inch16
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Material Document and ClassificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL OVERALL
Width Across Flats0.688 INCHES NOMINAL IN
Nut Height0.547 INCHES NOMINAL IN
Locking FeatureFREE-RUNNING ALL METAL DESIGN OR PREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT
Thread Class3B
Nut StyleHEXAGON
Thread DirectionRIGHT-HAND
Surface TreatmentCADMIUM OR ZINC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5315-00-082-0448144178 INTERCHANGEABLE
Pin,shoulder,headless
Cummins Inc.
5970-00-723-5413101T1-2INX36YD INTERCHANGEABLE
Tape,insulation,electrical
Rogers Corporation
5310-00-935-9021 INTERCHANGEABLE
Nut,self-Locking,hexagon
6150-01-003-2825503-275 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Nortech Systems Inc Dba Aerospace Systems Div Nortech Systems - Aerospace Systems Division
5970-01-425-5968HM-350 1/2IN. BLK INTERCHANGEABLE
Tape,insulation,electrical
Saint-Gobain Performance Plastics Corp Div Composites
5970-01-669-3753 INTERCHANGEABLE
Tape,insulation,electrical
Cross-Reference Index
Part NumberManufacturer
29U060 Itw Food Equipment Group Llc Dba Hobart Service (USA)
52NU066 Harvard Industries Inc (USA)
52NU066 PRIMARY Esna, Llc (USA)
P422 Fmc Corp (USA)
144178 General Motors Llc Dba General Motors Llc (USA)
P422 Bae Systems Land & Armaments L.p. (USA)
144178 General Motors Corp (USA)
503275 Army Weapons Command Attn Amswe-Ree-S (USA)
P422 Amz Alabama Inc. (USA)
5310000503275 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
Related Parts
5315-00-082-0448INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
144178
5970-00-723-5413INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL
101T1-2INX36YD
5310-00-935-9021INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
6150-01-003-2825INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
503-275
5970-01-425-5968INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL
HM-350 1/2IN. BLK
5970-01-669-3753INTERCHANGEABLE
TAPE,INSULATION,ELECTRICAL

Frequently Asked Questions

What is NSN 5310-00-050-3275?

NSN 5310-00-050-3275 is a Nut,self-Locking,hexagon, manufactured by Esna, Llc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-050-3275?

NSN 5310-00-050-3275 has 10 cross-referenced part numbers: 29U060 (Itw Food Equipment Group Llc Dba Hobart Service), 52NU066 (Harvard Industries Inc), 52NU066 (Esna, Llc), P422 (Fmc Corp), 144178 (General Motors Llc Dba General Motors Llc) and 5 more.

What NSN replaces 5310-00-050-3275?

There are 6 known substitutes for 5310-00-050-3275: 5315-00-082-0448, 5970-00-723-5413, 5310-00-935-9021 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52NU066?

Key specifications for 52NU066: Nominal Thread Size: 0.375 INCHES IN; Thread Quantity Per Inch: 16; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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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