The Block,tackle, cataloged under National Stock Number 3940-01-351-3905, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3940-01-351-3905
Item Name
Block,tackle
FSC / FSG
3940 / 39 — Blocks, Tackle, Rigging, and Slings
Status
ACTIVE
Attachment Style
DRILLED SWIVEL EYE AND SHACKLE
Sheave Bearing Lubrication Method
SELF-LUBRICATED
Sheave Outside Diameter
9.000 INCHES NOMINAL IN
Block Type
REGULAR
Criticality Code Justification
FEAT
Style Designator
STRAP AND PLATE PATTERN
Sheave Quantity
1
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
Y
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3940-01-351-3906POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-351-3907POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-351-3908POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-351-3909POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-351-3910POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-351-6766POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
3940-01-352-6045POSSIBLE MATCH
BLOCK,TACKLE
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
8911-247-13
3/1Design control — primary reference
Crosby Group Inc the Mckissick Plant Div
6609837ITEM27
3/1Design control — primary reference
Naval Sea Systems Command
6609837
D/9Drawing number reference only
Naval Sea Systems Command
Related Parts
3940-01-351-3906POSSIBLE MATCH
BLOCK,TACKLE
3940-01-351-3907POSSIBLE MATCH
BLOCK,TACKLE
3940-01-351-3908POSSIBLE MATCH
BLOCK,TACKLE
3940-01-351-3909POSSIBLE MATCH
BLOCK,TACKLE
3940-01-351-3910POSSIBLE MATCH
BLOCK,TACKLE
3940-01-351-6766POSSIBLE MATCH
BLOCK,TACKLE
3940-01-352-6045POSSIBLE MATCH
BLOCK,TACKLE
Frequently Asked Questions
What is NSN 3940-01-351-3905?
NSN 3940-01-351-3905 is a Block,tackle, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.
What NSN replaces 3940-01-351-3905?
7 possible matches (shared part number, not a government interchangeability claim): 3940-01-351-3906, 3940-01-351-3907, 3940-01-351-3908. Verify interchangeability with system specifications before substitution.
What are the specifications of 3940-01-351-3905?
Key specifications for 3940-01-351-3905: Attachment Style: DRILLED SWIVEL EYE AND SHACKLE; Sheave Bearing Lubrication Method: SELF-LUBRICATED; Sheave Outside Diameter: 9.000 INCHES NOMINAL IN; Block Type: REGULAR. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3940-01-351-3905 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.