PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-12582Block,tackle

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3940-00-141-7195 · FSC 3940 · No Item Name Available
Verified by PartsTable
NSN 3940-00-141-7195 — this item is cataloged by the U.S. Government under National Stock Number 3940-00-141-7195. Primary manufacturer part number: MIL-B-12582.
Features
  • Block,tackle — FSC 3940
  • Sheave Bearing Lubrication Method: SELF-LUBRICATED
  • Bearing Type: ROLLER
  • Antitoppling Device: NOT INCLUDED
  • Load Rating: 26000.0 POUNDS MAXIMUM LBS
  • Sheave Outside Diameter: 14.000 INCHES NOMINAL IN
  • Attachment Style: CHAIN SHACKLE
  • Tackle Accommodated Type: WIRE ROPE
Applications
  • Applications requiring Steel Overall construction
General Description

The Block,tackle, cataloged under National Stock Number 3940-00-141-7195, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3940-00-141-7195
Primary Part NumberMIL-B-12582
Item NameBlock,tackle
FSC / FSG3940 / 39 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Sheave Bearing Lubrication MethodSELF-LUBRICATED
Bearing TypeROLLER
Antitoppling DeviceNOT INCLUDED
Load Rating26000.0 POUNDS MAXIMUM LBS
Sheave Outside Diameter14.000 INCHES NOMINAL IN
Attachment StyleCHAIN SHACKLE
Tackle Accommodated TypeWIRE ROPE
Maximum Tackle Diameter Accommodated1.000 INCHES IN
Sheave Quantity1
Tackle Locking DeviceNOT INCLUDED
MaterialSTEEL OVERALL
Style DesignatorHALF-ROUND PATTERN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3940-00-141-7196 INTERCHANGEABLE
Block,tackle
3940-00-141-7197 INTERCHANGEABLE
Block,tackle
3940-00-202-2200 INTERCHANGEABLE
Block,tackle
3940-00-708-0704 INTERCHANGEABLE
Block,tackle
Cross-Reference Index
Part NumberManufacturer
MIL-B-12582 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-A-59390 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA59390-D-1-A-14 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
Related Parts
3940-00-141-7196INTERCHANGEABLE
BLOCK,TACKLE
3940-00-141-7197INTERCHANGEABLE
BLOCK,TACKLE
3940-00-202-2200INTERCHANGEABLE
BLOCK,TACKLE
3940-00-708-0704INTERCHANGEABLE
BLOCK,TACKLE

Frequently Asked Questions

What is NSN 3940-00-141-7195?

NSN 3940-00-141-7195 is a Block,tackle, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3940 (No Item Name Available). Status: active.

What are the part numbers for NSN 3940-00-141-7195?

NSN 3940-00-141-7195 has 3 cross-referenced part numbers: MIL-B-12582 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), A-A-59390 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA59390-D-1-A-14 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).

What NSN replaces 3940-00-141-7195?

There are 4 known substitutes for 3940-00-141-7195: 3940-00-141-7196, 3940-00-141-7197, 3940-00-202-2200 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-12582?

Key specifications for MIL-B-12582: Sheave Bearing Lubrication Method: SELF-LUBRICATED; Bearing Type: ROLLER; Antitoppling Device: NOT INCLUDED; Load Rating: 26000.0 POUNDS MAXIMUM LBS. 13 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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