PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

550310Block,tackle

Ulven Machinery Co, Inc · NSN 3940-01-334-9580 · FSC 3940 · No Item Name Available
Verified by PartsTable
NSN 3940-01-334-9580 — this item is cataloged by the U.S. Government under National Stock Number 3940-01-334-9580. Primary manufacturer part number: 550310.
Features
  • Block,tackle — FSC 3940
  • 1 verified cross-reference
  • Primary manufacturer: Ulven Machinery Co, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Block,tackle, cataloged under National Stock Number 3940-01-334-9580, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Ulven Machinery Co, Inc. 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
NSN3940-01-334-9580
Primary Part Number550310
Item NameBlock,tackle
FSC / FSG3940 / 39 — No Item Name Available
ManufacturerUlven Machinery Co, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-100-07843659 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
4810-00-688-7866V27200-527 INTERCHANGEABLE
Valve,solenoid
Valcor Engineering Corporation
5330-01-486-4539NB25025E-0200-10 INTERCHANGEABLE
Seal,plain
Hunt Valve Company, Inc.
Cross-Reference Index
Part NumberManufacturer
550310 PRIMARY Ulven Machinery Co, Inc (USA)
Related Parts
3110-00-100-0784INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3659
4810-00-688-7866INTERCHANGEABLE
VALVE,SOLENOID
V27200-527
5330-01-486-4539INTERCHANGEABLE
SEAL,PLAIN
NB25025E-0200-10

Frequently Asked Questions

What is NSN 3940-01-334-9580?

NSN 3940-01-334-9580 is a Block,tackle, manufactured by Ulven Machinery Co, Inc, classified under FSC 3940 (No Item Name Available). Status: active.

What are the part numbers for NSN 3940-01-334-9580?

NSN 3940-01-334-9580 has 1 cross-referenced part number: 550310 (Ulven Machinery Co, Inc).

What NSN replaces 3940-01-334-9580?

There are 3 known substitutes for 3940-01-334-9580: 3110-00-100-0784, 4810-00-688-7866, 5330-01-486-4539. Verify interchangeability with system specifications before substitution.

What are the specifications of 550310?

Key specifications for 550310: End Item Identification: 2330-01-303-8832 M1000 CHETTL TRAILER. 1 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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