PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41218Screwdriver Attachment,socket Wr

S K Hand Tool Corp · NSN 5120-01-651-4491 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-651-4491 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-651-4491. Primary manufacturer part number: 41218.
Features
  • Screwdriver Attachment,socket Wr — FSC 5120
  • Style Designator: HEXAGON
  • Wrenching Surface Size: 0.563 INCHES NOMINAL SINGLE END IN
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Surface Treatment: CHROMIUM DRIVE SURFACE
  • Surface Treatment: OXIDE BIT
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: HEXAGON SINGLE END EXTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Screwdriver Attachment,socket Wr, cataloged under National Stock Number 5120-01-651-4491, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is S K Hand Tool Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5120-01-651-4491
Primary Part Number41218
Item NameScrewdriver Attachment,socket Wr
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerS K Hand Tool Corp
StatusACTIVE
Style DesignatorHEXAGON
Wrenching Surface Size0.563 INCHES NOMINAL SINGLE END IN
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Surface TreatmentCHROMIUM DRIVE SURFACE
Surface TreatmentOXIDE BIT
MaterialSTEEL OVERALL
Wrenching Surface ShapeHEXAGON SINGLE END EXTERNAL
Features ProvidedMANUAL TOOL AND REPLACEABLE BIT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6250-00-079-98884-12-18 INTERCHANGEABLE
Lampholder
Lighting Components and Design Incorporated Dba Lc&d
5945-00-111-4915412-18 INTERCHANGEABLE
Relay,electromagnetic
Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/
3110-00-155-6461218WG INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
6510-00-202-40000200049 INTERCHANGEABLE
Gauze,absorbent
Szy Holdings, Llc Dba Szy Holdings Llc
5133-00-228-1398 INTERCHANGEABLE
Drill,twist
5905-00-279-859250097PC14 INTERCHANGEABLE
Resistor,adjustable
Ward Leonard Ct Llc
4820-00-922-139641218 INTERCHANGEABLE
Diaphragm Assembly,valve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5310-01-139-962041218K INTERCHANGEABLE
Washer,special
Griswold Industries Dba Cla-Val Co
6680-01-177-1478 INTERCHANGEABLE
Gage Rod-Cap,liquid Level
5962-01-311-28433221385-1 INTERCHANGEABLE
Microcircuit,digital
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
41218 PRIMARY S K Hand Tool Corp (USA)
Related Parts
6250-00-079-9888INTERCHANGEABLE
LAMPHOLDER
4-12-18
5945-00-111-4915INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
412-18
3110-00-155-6461INTERCHANGEABLE
BEARING,BALL,ANNULAR
218WG
6510-00-202-4000INTERCHANGEABLE
GAUZE,ABSORBENT
0200049
5133-00-228-1398INTERCHANGEABLE
DRILL,TWIST
5905-00-279-8592INTERCHANGEABLE
RESISTOR,ADJUSTABLE
50097PC14
4820-00-922-1396INTERCHANGEABLE
DIAPHRAGM ASSEMBLY,VALVE
41218
5310-01-139-9620INTERCHANGEABLE
WASHER,SPECIAL
41218K
6680-01-177-1478INTERCHANGEABLE
GAGE ROD-CAP,LIQUID LEVEL
5962-01-311-2843INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
3221385-1
6680-01-644-8918INTERCHANGEABLE
GAGE ROD,LIQUID LEVEL
41218
2510-01-729-4912INTERCHANGEABLE
DOOR,HATCH,VEHICLE
41218

Frequently Asked Questions

What is NSN 5120-01-651-4491?

NSN 5120-01-651-4491 is a Screwdriver Attachment,socket Wr, manufactured by S K Hand Tool Corp, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-651-4491?

NSN 5120-01-651-4491 has 1 cross-referenced part number: 41218 (S K Hand Tool Corp).

What NSN replaces 5120-01-651-4491?

There are 12 known substitutes for 5120-01-651-4491: 6250-00-079-9888, 5945-00-111-4915, 3110-00-155-6461 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 41218?

Key specifications for 41218: Overall Length: 3.440 INCHES NOMINAL IN; Style Designator: HEXAGON; Wrenching Surface Size: 0.563 INCHES NOMINAL SINGLE END IN; Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN. 9 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