PartsTable TECHNICAL DATA SHEET
NSN 3940-01-688-5631Government record, cited

Block, Tackle3940-01-688-5631

NSN 3940-01-688-5631 · NIIN 016885631 · Part number AL4009396
Flyer Defense, Llc · FSC 3940 — Blocks, Tackle, Rigging, and Slings · FSG 39 — Materials Handling Equipment · CAGE 1RZR5
Government record, cited
NSN 3940-01-688-5631 — this item is cataloged by the U.S. Government under National Stock Number 3940-01-688-5631. Manufacturer of record part number: AL4009396.
Also searched as  3940-01-688-5631 · 3940016885631 · NIIN 016885631 · 01-688-5631 · FSC 3940 Blocks, Tackle, Rigging, and Slings · CAGE 1RZR5 · AL4009396
Nearby stock numbers  ·
Features
  • Block,tackle — FSC 3940
  • 1 manufacturer part number on file
  • Manufacturer of record: Flyer Defense, Llc
Identification
  • NSN: 3940-01-688-5631
  • NIIN: 016885631
  • FSC: 3940 — Blocks, Tackle, Rigging, and Slings
  • FSG: 39 — Materials Handling Equipment
  • Primary part number: AL4009396
  • Manufacturer: Flyer Defense, Llc
General Description

The Block,tackle, cataloged under National Stock Number 3940-01-688-5631, is classified within Federal Supply Class 3940 (Blocks, Tackle, Rigging, and Slings) of the Materials Handling Equipment group. The manufacturer of record is Flyer Defense, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3940-01-688-5631
Primary Part NumberAL4009396
Item NameBlock,tackle
FSC / FSG3940 / 39 — Blocks, Tackle, Rigging, and Slings
ManufacturerFlyer Defense, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
AL4009396 PRIMARY Flyer Defense, Llc (USA)
Reference documents
ReferenceMeaning
AL4009396 5/9 Secondary reference
General Dynamics Ordnance and Tactical Systems, Inc.
No interchangeability data on file.
Other items in FSC 3940 — Blocks, Tackle, Rigging, and Slings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3940-00-000-0169
3940-00-000-0169 · Item name not on file
3940-00-003-0706
BLOCK-WD12IN SNATCH
3940-00-004-3568
3940-00-004-3568 · Item name not on file
3940-00-004-9175
SLING,PALLET
3940-00-005-1366
3940-00-005-1366 · Item name not on file
3940-00-005-1367
3940-00-005-1367 · Item name not on file
3940-00-006-3256
3940-00-006-3256 · Item name not on file
3940-00-007-2801
ADAPTER,HOISTING

Frequently Asked Questions

What is NSN 3940-01-688-5631?

NSN 3940-01-688-5631 is a Block,tackle, manufactured by Flyer Defense, Llc, classified under FSC 3940, Blocks, Tackle, Rigging, and Slings. Status: active.

What part numbers are listed for NSN 3940-01-688-5631?

NSN 3940-01-688-5631 has 1 manufacturer part number on file: AL4009396 (Flyer Defense, Llc).

What are the specifications of AL4009396?

Key specifications for AL4009396: Part Name Assigned by Controlling Agency: PULLEY MOUNT ASSEMBLY,ALTERNATOR; End Item Identification: 016275147. 0 specifications are documented in the U.S. Government catalog.

Is NSN 3940-01-688-5631 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.
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