PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51-160Nut,plain,square

Aqua-Chem, Inc. Dba Aqua-Chem Inc · NSN 5310-01-145-0673 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-145-0673 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-145-0673. Primary manufacturer part number: 51-160.
Features
  • Nut,plain,square — FSC 5310
  • Nominal Thread Size: 0.531 INCHES0.531 INCHES IN
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
  • Bearing Surface Type: CHAMFEREDCHAMFERED
  • Thread Quantity Per Inch: 2828
  • Thread Direction: RIGHT-HANDRIGHT-HAND
  • Nut Style: SQUARESQUARE
  • Nut Height: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy 360 Overall construction
General Description

The Nut,plain,square, cataloged under National Stock Number 5310-01-145-0673, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-01-145-0673
Primary Part Number51-160
Item NameNut,plain,square
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerAqua-Chem, Inc. Dba Aqua-Chem Inc
StatusACTIVE
Nominal Thread Size0.531 INCHES0.531 INCHES IN
Thread SeriesUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
Bearing Surface TypeCHAMFEREDCHAMFERED
Thread Quantity Per Inch2828
Thread DirectionRIGHT-HANDRIGHT-HAND
Nut StyleSQUARESQUARE
Nut Height1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN
Width Across Flats0.938 INCHES NOMINAL0.938 INCHES NOMINAL IN
Material Document and ClassificationASTM B16 ASSN STD SINGLE MATERIAL RESPONSE OVERALLASTM B16 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY 360 OVERALL
Thread Class2B2B
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5999-00-240-4336SCB69775 INTERCHANGEABLE
Contact,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-512-2997 INTERCHANGEABLE
Cap,valve
2940-00-541-3499376376R92 INTERCHANGEABLE
Filter Element,fluid
Dressta North America Ltd
1005-00-597-5638 INTERCHANGEABLE
Head,ejector Rod
5950-00-812-72596946 INTERCHANGEABLE
Transformer,power Autotransforme
Staco Energy Products Co Dba Staco Energy Products Co
4120-01-521-171351160 INTERCHANGEABLE
Air Conditioner
Applied Companies
Cross-Reference Index
Part NumberManufacturer
51-160 Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
51-160 Aqua-Chem Inc Cleaver-Brooks Div (USA)
Related Parts
5999-00-240-4336INTERCHANGEABLE
CONTACT,ELECTRICAL
SCB69775
4820-00-512-2997INTERCHANGEABLE
CAP,VALVE
2940-00-541-3499INTERCHANGEABLE
FILTER ELEMENT,FLUID
376376R92
1005-00-597-5638INTERCHANGEABLE
HEAD,EJECTOR ROD
5950-00-812-7259INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
6946
4120-01-521-1713INTERCHANGEABLE
AIR CONDITIONER
51160

Frequently Asked Questions

What is NSN 5310-01-145-0673?

NSN 5310-01-145-0673 is a Nut,plain,square, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-145-0673?

NSN 5310-01-145-0673 has 2 cross-referenced part numbers: 51-160 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 51-160 (Aqua-Chem Inc Cleaver-Brooks Div).

What NSN replaces 5310-01-145-0673?

There are 6 known substitutes for 5310-01-145-0673: 5999-00-240-4336, 4820-00-512-2997, 2940-00-541-3499 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51-160?

Key specifications for 51-160: Nominal Thread Size: 0.531 INCHES0.531 INCHES IN; Thread Series: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC); Bearing Surface Type: CHAMFEREDCHAMFERED; Thread Quantity Per Inch: 2828. 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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