PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300432Block,tackle

Cmc Rescue, Inc. · NSN 3940-01-643-0403 · FSC 3940 · No Item Name Available
Verified by PartsTable
NSN 3940-01-643-0403 — this item is cataloged by the U.S. Government under National Stock Number 3940-01-643-0403. Primary manufacturer part number: 300432.
Features
  • Block,tackle — FSC 3940
  • Block Type: REGULAR
  • Material: ALUMINUM SHEAVE
  • 1 verified cross-reference
  • Primary manufacturer: Cmc Rescue, Inc.
Applications
  • Applications requiring Aluminum Sheave construction
General Description

The Block,tackle, cataloged under National Stock Number 3940-01-643-0403, is classified within Federal Supply Class 3940 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Cmc Rescue, Inc.. 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
NSN3940-01-643-0403
Primary Part Number300432
Item NameBlock,tackle
FSC / FSG3940 / 39 — No Item Name Available
ManufacturerCmc Rescue, Inc.
StatusACTIVE
Block TypeREGULAR
MaterialALUMINUM SHEAVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6645-00-536-1489 INTERCHANGEABLE
Case,aircraft Clock
5340-01-698-5918300432 INTERCHANGEABLE
Bracket,mounting
Heil Trailer International Llc
Cross-Reference Index
Part NumberManufacturer
300432 PRIMARY Cmc Rescue, Inc. (USA)
Related Parts
6645-00-536-1489INTERCHANGEABLE
CASE,AIRCRAFT CLOCK
5340-01-698-5918INTERCHANGEABLE
BRACKET,MOUNTING
300432

Frequently Asked Questions

What is NSN 3940-01-643-0403?

NSN 3940-01-643-0403 is a Block,tackle, manufactured by Cmc Rescue, Inc., classified under FSC 3940 (No Item Name Available). Status: active.

What are the part numbers for NSN 3940-01-643-0403?

NSN 3940-01-643-0403 has 1 cross-referenced part number: 300432 (Cmc Rescue, Inc.).

What NSN replaces 3940-01-643-0403?

There are 2 known substitutes for 3940-01-643-0403: 6645-00-536-1489, 5340-01-698-5918. Verify interchangeability with system specifications before substitution.

What are the specifications of 300432?

Key specifications for 300432: Special Features: SHEAVE TREAD 1.5 X .5 IN, BRONZE/SLATE, 3 SIGMA MBS 44 KN, WGHT. 14.6 OZ OZ; Part Name Assigned by Controlling Agency: DOUBLE SWIVEL PULLEY; Block Type: REGULAR; Material: ALUMINUM SHEAVE. 4 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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