PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51874Main Sheave,sheave Case Kit

Allied Systems Company Dba Allied Systems Co · NSN 3815-01-503-1156 · FSC 3815 · No Item Name Available
Verified by PartsTable
NSN 3815-01-503-1156 — this item is cataloged by the U.S. Government under National Stock Number 3815-01-503-1156. Primary manufacturer part number: 51874.
Features
  • Main Sheave,sheave Case Kit — FSC 3815
  • General Characteristics Item Description: KIT CONSISTS OF 1 PIN; 1 CAPSCREW; 1 LOCKWASHER; 1 WASHER; 1 LUBE FITTING; 1 THRUST BEARING; 1 SEAL; 1 BEARING THRUST; 1 SHEAVE ASSEMBLLY, 1 SEAL
  • 1 verified cross-reference
  • Primary manufacturer: Allied Systems Company Dba Allied Systems Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Main Sheave,sheave Case Kit, cataloged under National Stock Number 3815-01-503-1156, is classified within Federal Supply Class 3815 (No Item Name Available) of the Construction, Mining, Excavating Equipment group. The primary manufacturer of record is Allied Systems Company Dba Allied Systems Co. Government technical data includes 1 verified specification, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3815-01-503-1156
Primary Part Number51874
Item NameMain Sheave,sheave Case Kit
FSC / FSG3815 / 38 — No Item Name Available
ManufacturerAllied Systems Company Dba Allied Systems Co
StatusACTIVE
General Characteristics Item DescriptionKIT CONSISTS OF 1 PIN; 1 CAPSCREW; 1 LOCKWASHER; 1 WASHER; 1 LUBE FITTING; 1 THRUST BEARING; 1 SEAL; 1 BEARING THRUST; 1 SHEAVE ASSEMBLLY, 1 SEAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5940-00-401-1658YAE22Z2 INTERCHANGEABLE
Terminal,lug
Burndy Llc
2940-00-949-424151874 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5365-01-734-116851874 INTERCHANGEABLE
Bushing,nonmetallic
Vigor Works Llc
Cross-Reference Index
Part NumberManufacturer
51874 PRIMARY Allied Systems Company Dba Allied Systems Co (USA)
Related Parts
5940-00-401-1658INTERCHANGEABLE
TERMINAL,LUG
YAE22Z2
2940-00-949-4241INTERCHANGEABLE
FILTER ELEMENT,FLUID
51874
5365-01-734-1168INTERCHANGEABLE
BUSHING,NONMETALLIC
51874

Frequently Asked Questions

What is NSN 3815-01-503-1156?

NSN 3815-01-503-1156 is a Main Sheave,sheave Case Kit, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 3815 (No Item Name Available). Status: active.

What are the part numbers for NSN 3815-01-503-1156?

NSN 3815-01-503-1156 has 1 cross-referenced part number: 51874 (Allied Systems Company Dba Allied Systems Co).

What NSN replaces 3815-01-503-1156?

There are 3 known substitutes for 3815-01-503-1156: 5940-00-401-1658, 2940-00-949-4241, 5365-01-734-1168. Verify interchangeability with system specifications before substitution.

What are the specifications of 51874?

Key specifications for 51874: General Characteristics Item Description: KIT CONSISTS OF 1 PIN; 1 CAPSCREW; 1 LOCKWASHER; 1 WASHER; 1 LUBE FITTING; 1 THRUST BEARING; 1 SEAL; 1 BEARING THRUST; 1 SHEAVE ASSEMBLLY, 1 SEAL; End Item Identification: CRANE,BUOY,HANDLING, PART NUMBER TB90-60/1771 ABOARD 225 FT WLB COAST GUARD BESSELS FT. 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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