PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

820-2177923PC1Stud,special

Naval Ship Systems Command · NSN 4820-00-274-6378 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-274-6378 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-274-6378. Primary manufacturer part number: 820-2177923PC1.
Features
  • Stud,special — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
  • 1 verified cross-reference
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Stud,special, cataloged under National Stock Number 4820-00-274-6378, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-274-6378
Primary Part Number820-2177923PC1
Item NameStud,special
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4470-00-995-0681 INTERCHANGEABLE
Stud,handhole
5307-01-679-8173 INTERCHANGEABLE
Stud,plain
Cross-Reference Index
Part NumberManufacturer
820-2177923PC1 Naval Ship Systems Command (USA)
Related Parts
4470-00-995-0681INTERCHANGEABLE
STUD,HANDHOLE
5307-01-679-8173INTERCHANGEABLE
STUD,PLAIN

Frequently Asked Questions

What is NSN 4820-00-274-6378?

NSN 4820-00-274-6378 is a Stud,special, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-274-6378?

NSN 4820-00-274-6378 has 1 cross-referenced part number: 820-2177923PC1 (Naval Ship Systems Command).

What NSN replaces 4820-00-274-6378?

There are 2 known substitutes for 4820-00-274-6378: 4470-00-995-0681, 5307-01-679-8173. Verify interchangeability with system specifications before substitution.

What are the specifications of 820-2177923PC1?

Key specifications for 820-2177923PC1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 2 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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