PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20554Crowfoot Attachment,socket Wrenc

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-430-8109 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-430-8109 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-430-8109. Primary manufacturer part number: 20554.
Features
  • Crowfoot Attachment,socket Wrenc — FSC 5120
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Style Designator: OPEN END
  • Surface Treatment: CHROMIUM OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.562 INCHES NOMINAL SINGLE END IN
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Crowfoot Attachment,socket Wrenc, cataloged under National Stock Number 5120-01-430-8109, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-430-8109
Primary Part Number20554
Item NameCrowfoot Attachment,socket Wrenc
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Drive End ShapeSQUARE SINGLE END INTERNAL
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Style DesignatorOPEN END
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size0.562 INCHES NOMINAL SINGLE END IN
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-285-9436 INTERCHANGEABLE
Seal,plain Encased
6515-00-336-290070-5673 INTERCHANGEABLE
Forceps,nasal Septum Cutting
Sklar Corporation Dba Sklar Instruments
3020-00-573-103420554-1 INTERCHANGEABLE
Pinion,motor
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
5950-00-726-01522450582 INTERCHANGEABLE
Coil,radio Frequency
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5315-01-174-883820-554 INTERCHANGEABLE
Pin,shoulder,headless
Cmbf, Llc Dba Cmbf Llc
1005-01-257-53861211C20554 INTERCHANGEABLE
Chute,ammunition
Nobles Worldwide, Inc.
4820-01-311-09594986-11 INTERCHANGEABLE
Valve,safety Relief
Parker-Hannifin Corporation Dba Pneutronics Div Quick Coupler Division
Cross-Reference Index
Part NumberManufacturer
20554 Apex Tool Group, Llc Dba Nicholson (USA)
20554 Easco Hand Tools Inc (USA)
20554 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
5330-00-285-9436INTERCHANGEABLE
SEAL,PLAIN ENCASED
6515-00-336-2900INTERCHANGEABLE
FORCEPS,NASAL SEPTUM CUTTING
70-5673
3020-00-573-1034INTERCHANGEABLE
PINION,MOTOR
20554-1
5950-00-726-0152INTERCHANGEABLE
COIL,RADIO FREQUENCY
2450582
5315-01-174-8838INTERCHANGEABLE
PIN,SHOULDER,HEADLESS
20-554
1005-01-257-5386INTERCHANGEABLE
CHUTE,AMMUNITION
1211C20554
4820-01-311-0959INTERCHANGEABLE
VALVE,SAFETY RELIEF
4986-11

Frequently Asked Questions

What is NSN 5120-01-430-8109?

NSN 5120-01-430-8109 is a Crowfoot Attachment,socket Wrenc, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-430-8109?

NSN 5120-01-430-8109 has 3 cross-referenced part numbers: 20554 (Apex Tool Group, Llc Dba Nicholson), 20554 (Easco Hand Tools Inc), 20554 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-430-8109?

There are 7 known substitutes for 5120-01-430-8109: 5330-00-285-9436, 6515-00-336-2900, 3020-00-573-1034 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20554?

Key specifications for 20554: Drive End Shape: SQUARE SINGLE END INTERNAL; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Style Designator: OPEN END; Surface Treatment: CHROMIUM OVERALL. 8 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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