PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21C2404P017Crowfoot Attachment,socket Wrenc

General Electric Company · NSN 5120-00-953-3409 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-953-3409 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-953-3409. Primary manufacturer part number: 21C2404P017.
Features
  • Crowfoot Attachment,socket Wrenc — FSC 5120
  • Head Thickness: 0.562 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN
  • Wrenching Surface Size: 0.438 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Surface Treatment: NICKEL AND CHROMIUM OVERALL
  • Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Material: STEEL COMP 4340 OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
Applications
  • Applications requiring Steel Comp 4340 Overall construction
General Description

The Crowfoot Attachment,socket Wrenc, cataloged under National Stock Number 5120-00-953-3409, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is General Electric Company. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-953-3409
Primary Part Number21C2404P017
Item NameCrowfoot Attachment,socket Wrenc
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerGeneral Electric Company
StatusCANCELLED
Head Thickness0.562 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN
Wrenching Surface Size0.438 INCHES NOMINAL SINGLE END IN
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Surface TreatmentNICKEL AND CHROMIUM OVERALL
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
MaterialSTEEL COMP 4340 OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Style DesignatorFLARE NUT
Special Markings7/16 IN. WR SIZE IN
Opening Width0.270 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
2910-00-062-4204 INTERCHANGEABLE
Parts Kit,carburetor
4820-00-799-144218802 INTERCHANGEABLE
Seat,valve
Schneider Electric Systems Usa Inc
5305-00-834-299254A50A67 INTERCHANGEABLE
Setscrew
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5950-01-023-3084678-0201-020 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2540-01-132-6986 INTERCHANGEABLE
Blade,windshield Wiper
6660-01-443-111118802 INTERCHANGEABLE
Anemometer
R. M. Young Company Llc
5905-01-499-1235 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5325-01-571-2438AKS4T-610-4.2 INTERCHANGEABLE
Insert,screw Thread
Avk Industries Products Inc
Cross-Reference Index
Part NumberManufacturer
WC19605-14-8 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
18802 Granco Industries Inc (USA)
21C2404P017 PRIMARY General Electric Company (USA)
WS19605-14-8 Howmet Global Fastening Systems Inc. Div Microdot Products (USA)
WS19605-14-8 PRIMARY Howmet Global Fastening Systems Inc (USA)
WC19605-14-8 PRIMARY Howmet Global Fastening Systems Inc (USA)
18802 Wta Tool Llc (USA)
Related Parts
2910-00-062-4204INTERCHANGEABLE
PARTS KIT,CARBURETOR
4820-00-799-1442INTERCHANGEABLE
SEAT,VALVE
18802
5305-00-834-2992INTERCHANGEABLE
SETSCREW
54A50A67
5950-01-023-3084INTERCHANGEABLE
REACTOR
678-0201-020
2540-01-132-6986INTERCHANGEABLE
BLADE,WINDSHIELD WIPER
6660-01-443-1111INTERCHANGEABLE
ANEMOMETER
18802
5905-01-499-1235INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5325-01-571-2438INTERCHANGEABLE
INSERT,SCREW THREAD
AKS4T-610-4.2

Frequently Asked Questions

What is NSN 5120-00-953-3409?

NSN 5120-00-953-3409 is a Crowfoot Attachment,socket Wrenc, manufactured by General Electric Company, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-953-3409?

NSN 5120-00-953-3409 has 7 cross-referenced part numbers: WC19605-14-8 (Howmet Global Fastening Systems Inc. Div Microdot Products), 18802 (Granco Industries Inc), 21C2404P017 (General Electric Company), WS19605-14-8 (Howmet Global Fastening Systems Inc. Div Microdot Products), WS19605-14-8 (Howmet Global Fastening Systems Inc) and 2 more.

What NSN replaces 5120-00-953-3409?

There are 8 known substitutes for 5120-00-953-3409: 2910-00-062-4204, 4820-00-799-1442, 5305-00-834-2992 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21C2404P017?

Key specifications for 21C2404P017: Head Thickness: 0.562 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN; Overall Length: 1.151 INCHES MAXIMUM IN; Wrenching Surface Size: 0.438 INCHES NOMINAL SINGLE END IN; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-953-3409 still in active supply?

NSN 5120-00-953-3409 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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