PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NT1066Nut,plain,hexagon

United Technologies Corp Electro Systems Inc · NSN 5310-00-366-0569 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-366-0569 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-366-0569. Primary manufacturer part number: NT1066.
Features
  • Nut,plain,hexagon — FSC 5310
  • Nut Style: HEXAGON
  • Thread Quantity Per Inch: 20
  • Nominal Thread Size: 0.438 INCHES IN
  • Bearing Surface Type: WASHER FACED
  • Thread Series: UNF
  • Thread Class: 2B
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-366-0569, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is United Technologies Corp Electro Systems Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-366-0569
Primary Part NumberNT1066
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerUnited Technologies Corp Electro Systems Inc
StatusACTIVE
Nut StyleHEXAGON
Thread Quantity Per Inch20
Nominal Thread Size0.438 INCHES IN
Bearing Surface TypeWASHER FACED
Thread SeriesUNF
Thread Class2B
Thread DirectionRIGHT-HAND
Nut Height0.250 INCHES NOMINAL IN
Surface TreatmentCHROMIUM OVERALL
Width Across Flats0.625 INCHES NOMINAL IN
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3455-00-204-167719639 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
Cross-Reference Index
Part NumberManufacturer
NT1066 Ambac International Corporation Div Ambac International (USA)
NT1066 PRIMARY United Technologies Corp Electro Systems Inc (USA)
NT1067 PRIMARY United Technologies Corp Electro Systems Inc (USA)
5334688 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
NT1067 Ambac International Corporation Div Ambac International (USA)
Related Parts
3455-00-204-1677INTERCHANGEABLE
REAMER,MACHINE
19639

Frequently Asked Questions

What is NSN 5310-00-366-0569?

NSN 5310-00-366-0569 is a Nut,plain,hexagon, manufactured by United Technologies Corp Electro Systems Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-366-0569?

NSN 5310-00-366-0569 has 5 cross-referenced part numbers: NT1066 (Ambac International Corporation Div Ambac International), NT1066 (United Technologies Corp Electro Systems Inc), NT1067 (United Technologies Corp Electro Systems Inc), 5334688 (U S Army Tank Automotive Command Amsta-Im-Mm), NT1067 (Ambac International Corporation Div Ambac International).

What NSN replaces 5310-00-366-0569?

There is 1 known substitute for 5310-00-366-0569: 3455-00-204-1677. Verify interchangeability with system specifications before substitution.

What are the specifications of NT1066?

Key specifications for NT1066: Nut Style: HEXAGON; Thread Quantity Per Inch: 20; Nominal Thread Size: 0.438 INCHES IN; Bearing Surface Type: WASHER FACED. 11 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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