PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20558Crowfoot Attachment,socket Wrenc

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-430-8167 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-430-8167 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-430-8167. Primary manufacturer part number: 20558.
Features
  • Crowfoot Attachment,socket Wrenc — FSC 5120
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Style Designator: OPEN END
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.812 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Crowfoot Attachment,socket Wrenc, cataloged under National Stock Number 5120-01-430-8167, 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
NSN5120-01-430-8167
Primary Part Number20558
Item NameCrowfoot Attachment,socket Wrenc
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Style DesignatorOPEN END
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Wrenching Surface Size0.812 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2915-00-122-661039-10113 INTERCHANGEABLE
Filter Element,fluid
Hydro-Aire Aerospace Corp
3455-00-232-421519800 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
4820-00-289-08531226 INTERCHANGEABLE
Valve,safety Relief
Dante Valve Company
1015-01-229-544220558 INTERCHANGEABLE
Seat
Real-Time Laboratories, Llc
5310-01-306-464320558 INTERCHANGEABLE
Washer,lock
Funk Mfg Co Sub of Deere and Co
4810-01-379-122120558 INTERCHANGEABLE
Piston,valve
Triumph Actuation Systems - Valencia, Inc. Dba Triumph Actuation Systems - Valencia Inc Div Triumph Actuation Systems-Val
4720-01-591-244520558 INTERCHANGEABLE
Hose,preformed
Superior Diesel, Inc.
Cross-Reference Index
Part NumberManufacturer
20558 Apex Tool Group, Llc Dba Nicholson (USA)
20558 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
20558 Easco Hand Tools Inc (USA)
Related Parts
2915-00-122-6610INTERCHANGEABLE
FILTER ELEMENT,FLUID
39-10113
3455-00-232-4215INTERCHANGEABLE
REAMER,MACHINE
19800
4820-00-289-0853INTERCHANGEABLE
VALVE,SAFETY RELIEF
1226
1015-01-229-5442INTERCHANGEABLE
SEAT
20558
5310-01-306-4643INTERCHANGEABLE
WASHER,LOCK
20558
4810-01-379-1221INTERCHANGEABLE
PISTON,VALVE
20558
4720-01-591-2445INTERCHANGEABLE
HOSE,PREFORMED
20558

Frequently Asked Questions

What is NSN 5120-01-430-8167?

NSN 5120-01-430-8167 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 5120-01-430-8167?

NSN 5120-01-430-8167 has 3 cross-referenced part numbers: 20558 (Apex Tool Group, Llc Dba Nicholson), 20558 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 20558 (Easco Hand Tools Inc).

What NSN replaces 5120-01-430-8167?

There are 7 known substitutes for 5120-01-430-8167: 2915-00-122-6610, 3455-00-232-4215, 4820-00-289-0853 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20558?

Key specifications for 20558: Surface Treatment: CHROMIUM OVERALL; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Drive End Shape: SQUARE SINGLE END INTERNAL; Style Designator: OPEN END. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com