PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N9556Nut,plain,hexagon

C E Niehoff & Co · NSN 5310-01-423-0880 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-01-423-0880 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-423-0880. Primary manufacturer part number: N9556.
Features
  • Nut,plain,hexagon — FSC 5310
  • Material: STEEL CORROSION RESISTING OVERALL
  • Thread Class: 2B
  • Thread Quantity Per Inch: 18
  • Bearing Surface Type: WASHER FACED
  • Thread Series: UNIFIED NATIONAL COARSE (UNC)
  • Nominal Thread Size: 0.312 INCHES IN
  • Width Across Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-423-0880, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is C E Niehoff & Co. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5310-01-423-0880
Primary Part NumberN9556
Item NameNut,plain,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerC E Niehoff & Co
StatusACTIVE
MaterialSTEEL CORROSION RESISTING OVERALL
Thread Class2B
Thread Quantity Per Inch18
Bearing Surface TypeWASHER FACED
Thread SeriesUNIFIED NATIONAL COARSE (UNC)
Nominal Thread Size0.312 INCHES IN
Width Across Flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Nut Height0.258 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND
Nut StyleHEXAGON
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
2510-00-618-512932W3509 INTERCHANGEABLE
Plate Armor Hood
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
Cross-Reference Index
Part NumberManufacturer
N9556 PRIMARY C E Niehoff & Co (USA)
Related Parts
2510-00-618-5129INTERCHANGEABLE
PLATE ARMOR HOOD
32W3509

Frequently Asked Questions

What is NSN 5310-01-423-0880?

NSN 5310-01-423-0880 is a Nut,plain,hexagon, manufactured by C E Niehoff & Co, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-01-423-0880?

NSN 5310-01-423-0880 has 1 cross-referenced part number: N9556 (C E Niehoff & Co).

What NSN replaces 5310-01-423-0880?

There is 1 known substitute for 5310-01-423-0880: 2510-00-618-5129. Verify interchangeability with system specifications before substitution.

What are the specifications of N9556?

Key specifications for N9556: Material: STEEL CORROSION RESISTING OVERALL; Thread Class: 2B; Thread Quantity Per Inch: 18; Bearing Surface Type: WASHER FACED. 10 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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