PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

419-6Block,tackle

The Crosby Group Llc Dba the Crosby Group · NSN 3940-01-126-3299 · FSC 3940 · No Item Name Available
Verified by PartsTable
NSN 3940-01-126-3299 — this item is cataloged by the U.S. Government under National Stock Number 3940-01-126-3299. Primary manufacturer part number: 419-6.
Features
  • Block,tackle — FSC 3940
  • Block Type: SNATCH
  • Maximum Tackle Diameter Accommodated: 0.750 INCHES IN
  • Sheave Outside Diameter: 6.000 INCHES NOMINAL IN
  • Attachment Style: DRILLED SWIVEL EYE AND SHACKLE
  • Sheave Quantity: 1
  • Tackle Accommodated Type: WIRE ROPE
  • 1 verified cross-reference
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Block,tackle, cataloged under National Stock Number 3940-01-126-3299, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 6 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3940-01-126-3299
Primary Part Number419-6
Item NameBlock,tackle
FSC / FSG3940 / 39 — No Item Name Available
ManufacturerThe Crosby Group Llc Dba the Crosby Group
StatusACTIVE
Block TypeSNATCH
Maximum Tackle Diameter Accommodated0.750 INCHES IN
Sheave Outside Diameter6.000 INCHES NOMINAL IN
Attachment StyleDRILLED SWIVEL EYE AND SHACKLE
Sheave Quantity1
Tackle Accommodated TypeWIRE ROPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3810-00-052-1408 INTERCHANGEABLE
Sheave,dipper Trip
5330-00-056-4227 INTERCHANGEABLE
Rope,asbestos
4730-00-491-1013 INTERCHANGEABLE
Nipple,pipe
2520-00-562-81194196 INTERCHANGEABLE
Lever,toggle
Sachs-Boge of America
5120-01-429-656700904196000 INTERCHANGEABLE
Nutdriver Set
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
Cross-Reference Index
Part NumberManufacturer
419-6 PRIMARY The Crosby Group Llc Dba the Crosby Group (USA)
Related Parts
3810-00-052-1408INTERCHANGEABLE
SHEAVE,DIPPER TRIP
5330-00-056-4227INTERCHANGEABLE
ROPE,ASBESTOS
4730-00-491-1013INTERCHANGEABLE
NIPPLE,PIPE
2520-00-562-8119INTERCHANGEABLE
LEVER,TOGGLE
4196
5120-01-429-6567INTERCHANGEABLE
NUTDRIVER SET
00904196000

Frequently Asked Questions

What is NSN 3940-01-126-3299?

NSN 3940-01-126-3299 is a Block,tackle, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 3940 (No Item Name Available). Status: active.

What are the part numbers for NSN 3940-01-126-3299?

NSN 3940-01-126-3299 has 1 cross-referenced part number: 419-6 (The Crosby Group Llc Dba the Crosby Group).

What NSN replaces 3940-01-126-3299?

There are 5 known substitutes for 3940-01-126-3299: 3810-00-052-1408, 5330-00-056-4227, 4730-00-491-1013 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 419-6?

Key specifications for 419-6: Block Type: SNATCH; Maximum Tackle Diameter Accommodated: 0.750 INCHES IN; Sheave Outside Diameter: 6.000 INCHES NOMINAL IN; Attachment Style: DRILLED SWIVEL EYE AND SHACKLE. 6 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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