PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28139Crowfoot Attachment,socket Wrenc

Wta Tool Llc · NSN 5120-01-505-4347 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-505-4347 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-505-4347. Primary manufacturer part number: 28139.
Features
  • Crowfoot Attachment,socket Wrenc — FSC 5120
  • Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMATE OVERALL
  • Style Designator: FLARE NUT
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Opening Width: 0.250 INCHES NOMINAL IN
  • Drive End Shape: SQUARE SINGLE END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Crowfoot Attachment,socket Wrenc, cataloged under National Stock Number 5120-01-505-4347, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Wta Tool Llc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-505-4347
Primary Part Number28139
Item NameCrowfoot Attachment,socket Wrenc
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWta Tool Llc
StatusACTIVE
Drive Surface Size0.250 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Surface TreatmentCHROMATE OVERALL
Style DesignatorFLARE NUT
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Opening Width0.250 INCHES NOMINAL IN
Drive End ShapeSQUARE SINGLE END INTERNAL
Head Thickness0.281 INCHES NOMINAL IN
Wrenching Surface Size0.281 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5905-00-665-8321AR7501 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Superior Electric Holding Group Llc Div Specialty Product Technologies
5330-00-732-448428139 INTERCHANGEABLE
Gasket
Leslie Controls, Inc. Dba Leslie Controls Inc
2920-00-737-1312A5074 INTERCHANGEABLE
Harness
Am General Llc
5360-00-912-0527 INTERCHANGEABLE
Spring
4820-00-947-397424221-P INTERCHANGEABLE
Valve,angle
Primore Sales Inc
3110-01-080-251328139 INTERCHANGEABLE
Shield,bearing,replacement
Electro-Tec Corp Dba Moog Inc., Components Group
5330-01-141-2502 INTERCHANGEABLE
Seal Ring,metal
5310-01-224-140828139 INTERCHANGEABLE
Nut,plain,round
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
5930-01-261-421628139 INTERCHANGEABLE
Switch,slide
Daytronic Corporation
5110-01-428-967028-139 INTERCHANGEABLE
Knife,scraping
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
28139 PRIMARY Wta Tool Llc (USA)
28139 Granco Industries Inc (USA)
Related Parts
5905-00-665-8321INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
AR7501
5330-00-732-4484INTERCHANGEABLE
GASKET
28139
2920-00-737-1312INTERCHANGEABLE
HARNESS
A5074
5360-00-912-0527INTERCHANGEABLE
SPRING
4820-00-947-3974INTERCHANGEABLE
VALVE,ANGLE
24221-P
3110-01-080-2513INTERCHANGEABLE
SHIELD,BEARING,REPLACEMENT
28139
5330-01-141-2502INTERCHANGEABLE
SEAL RING,METAL
5310-01-224-1408INTERCHANGEABLE
NUT,PLAIN,ROUND
28139
5930-01-261-4216INTERCHANGEABLE
SWITCH,SLIDE
28139
5110-01-428-9670INTERCHANGEABLE
KNIFE,SCRAPING
28-139

Frequently Asked Questions

What is NSN 5120-01-505-4347?

NSN 5120-01-505-4347 is a Crowfoot Attachment,socket Wrenc, manufactured by Wta Tool Llc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-505-4347?

NSN 5120-01-505-4347 has 2 cross-referenced part numbers: 28139 (Wta Tool Llc), 28139 (Granco Industries Inc).

What NSN replaces 5120-01-505-4347?

There are 10 known substitutes for 5120-01-505-4347: 5905-00-665-8321, 5330-00-732-4484, 2920-00-737-1312 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28139?

Key specifications for 28139: Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Overall Width: 0.438 INCHES NOMINAL IN; Material: STEEL OVERALL; Overall Length: 0.438 INCHES NOMINAL IN. 11 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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