PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

75309Bit,screwdriver

Willi Hahn Corp · NSN 5120-01-718-5442 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-718-5442 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-718-5442. Primary manufacturer part number: 75309.
Features
  • Bit,screwdriver — FSC 5120
  • Material: STEEL OVERALL
  • Tip Size Designation: 0.9 MILLIMETER NOMINAL MM
  • Drive Nominal Size: 4.0 MILLIMETERS MM
  • Drive Shank Type: HEXAGON
  • Tip Type: MALE HEXAGONAL
  • Width: 4.0 MILLIMETERS NOMINAL MM
  • 2 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Bit,screwdriver, cataloged under National Stock Number 5120-01-718-5442, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Willi Hahn Corp. Government technical data includes 6 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-718-5442
Primary Part Number75309
Item NameBit,screwdriver
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWilli Hahn Corp
StatusACTIVE
MaterialSTEEL OVERALL
Tip Size Designation0.9 MILLIMETER NOMINAL MM
Drive Nominal Size4.0 MILLIMETERS MM
Drive Shank TypeHEXAGON
Tip TypeMALE HEXAGONAL
Width4.0 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5355-00-394-8827 INTERCHANGEABLE
Shaft,dial
5310-00-940-803176309 INTERCHANGEABLE
Nut
Eaton Aerospace, Llc Dba Jackson South
Cross-Reference Index
Part NumberManufacturer
75309 Wiha Quality Tools (USA)
75309 PRIMARY Willi Hahn Corp (USA)
Related Parts
5355-00-394-8827INTERCHANGEABLE
SHAFT,DIAL
5310-00-940-8031INTERCHANGEABLE
NUT
76309

Frequently Asked Questions

What is NSN 5120-01-718-5442?

NSN 5120-01-718-5442 is a Bit,screwdriver, manufactured by Willi Hahn Corp, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-718-5442?

NSN 5120-01-718-5442 has 2 cross-referenced part numbers: 75309 (Wiha Quality Tools), 75309 (Willi Hahn Corp).

What NSN replaces 5120-01-718-5442?

There are 2 known substitutes for 5120-01-718-5442: 5355-00-394-8827, 5310-00-940-8031. Verify interchangeability with system specifications before substitution.

What are the specifications of 75309?

Key specifications for 75309: Material: STEEL OVERALL; Tip Size Designation: 0.9 MILLIMETER NOMINAL MM; Special Features: HEX MICRO BIT; OEM IS WIHA WERKZEUGE GMBH, CAGE STATUS Y, PHONE 07722/959-0; Drive Nominal Size: 4.0 MILLIMETERS MM. 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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