PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3964Adapter,socket,crowfoot Socket W

Granco Industries Inc · NSN 5120-00-287-2507 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-287-2507 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-287-2507. Primary manufacturer part number: 3964.
Features
  • Adapter,socket,crowfoot Socket W — FSC 5120
  • Material: STEEL OVERALL
  • Style Designator: EXTERNAL-EXTERNAL
  • Drive End Shape: SQUARE SINGLE END EXTERNAL
  • Drive Surface Size: 0.247 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE END IN
  • Outside Diameter: 0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
  • 5 verified cross-references
  • Primary manufacturer: Granco Industries Inc
Applications
  • Applications requiring Steel Overall construction
General Description

The Adapter,socket,crowfoot Socket W, cataloged under National Stock Number 5120-00-287-2507, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Granco Industries Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-287-2507
Primary Part Number3964
Item NameAdapter,socket,crowfoot Socket W
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGranco Industries Inc
StatusACTIVE
MaterialSTEEL OVERALL
Style DesignatorEXTERNAL-EXTERNAL
Drive End ShapeSQUARE SINGLE END EXTERNAL
Drive Surface Size0.247 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE END IN
Outside Diameter0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3030-00-050-72054-3771-3 INTERCHANGEABLE
Belts,v,matched Set
Muviq Usa, Llc
3455-00-222-4140 INTERCHANGEABLE
Blade,hole Saw
5950-00-230-10083964 INTERCHANGEABLE
Transformer,radio Frequency
Pax Mfg Corp Hammarlund Mfg Co Div
5950-00-251-1696213306-2 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5120-00-293-1549 INTERCHANGEABLE
Nutdriver
4730-00-379-1716 INTERCHANGEABLE
Nut,union
5360-00-391-96123864 INTERCHANGEABLE
Spring,tension
Lucent Technologies Inc Corporate Headquarters
5950-00-755-0002SMD344721 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4120-00-951-96973864 INTERCHANGEABLE
Air Conditioner
Applied Companies
4730-00-952-00362049-12-12S INTERCHANGEABLE
Elbow,pipe
Danfoss Power Solutions II, Llc
Cross-Reference Index
Part NumberManufacturer
3964 Granco Industries Inc (USA)
GGG-W-646 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GGG-W-646 TY2CL2STATM156 General Services Administration Federal Supply Service (USA)
GIT-3964 Granco Industries Inc (USA)
3864 Wta Tool Llc (USA)
Related Parts
3030-00-050-7205INTERCHANGEABLE
BELTS,V,MATCHED SET
4-3771-3
3455-00-222-4140INTERCHANGEABLE
BLADE,HOLE SAW
5950-00-230-1008INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
3964
5950-00-251-1696INTERCHANGEABLE
TRANSFORMER,POWER
213306-2
5120-00-293-1549INTERCHANGEABLE
NUTDRIVER
4730-00-379-1716INTERCHANGEABLE
NUT,UNION
5360-00-391-9612INTERCHANGEABLE
SPRING,TENSION
3864
5950-00-755-0002INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SMD344721
4120-00-951-9697INTERCHANGEABLE
AIR CONDITIONER
3864
4730-00-952-0036INTERCHANGEABLE
ELBOW,PIPE
2049-12-12S
5120-01-018-8981INTERCHANGEABLE
BIT,SCREWDRIVER
5920-01-172-5733INTERCHANGEABLE
FUSEHOLDER,RECEPTACLE
3964

Frequently Asked Questions

What is NSN 5120-00-287-2507?

NSN 5120-00-287-2507 is a Adapter,socket,crowfoot Socket W, manufactured by Granco Industries Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-287-2507?

NSN 5120-00-287-2507 has 5 cross-referenced part numbers: 3964 (Granco Industries Inc), GGG-W-646 (Federal Specifications Promulgated by General Services Administration Washington DC), GGG-W-646 TY2CL2STATM156 (General Services Administration Federal Supply Service), GIT-3964 (Granco Industries Inc), 3864 (Wta Tool Llc).

What NSN replaces 5120-00-287-2507?

There are 12 known substitutes for 5120-00-287-2507: 3030-00-050-7205, 3455-00-222-4140, 5950-00-230-1008 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3964?

Key specifications for 3964: Material: STEEL OVERALL; Style Designator: EXTERNAL-EXTERNAL; Drive End Shape: SQUARE SINGLE END EXTERNAL; Drive Surface Size: 0.247 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE END IN. 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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