PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LT300Check,key

Pro-Lok · NSN 4940-01-573-3491 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-01-573-3491 — this item is cataloged by the U.S. Government under National Stock Number 4940-01-573-3491. Primary manufacturer part number: LT300.
Features
  • Check,key — FSC 4940
  • Functional Description: USED TO VALIDATE KEY BLANKS AND CREATE NEW KEYS
  • 1 verified cross-reference
  • Primary manufacturer: Pro-Lok
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Check,key, cataloged under National Stock Number 4940-01-573-3491, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Pro-Lok. Government technical data includes 1 verified specification, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4940-01-573-3491
Primary Part NumberLT300
Item NameCheck,key
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerPro-Lok
StatusACTIVE
Functional DescriptionUSED TO VALIDATE KEY BLANKS AND CREATE NEW KEYS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6515-01-259-4311 INTERCHANGEABLE
Clip,hemostatic
1095-01-551-2436TT-60005 INTERCHANGEABLE
Holster,pistol
The Tactical Tailor Inc Div the Tactical Tailor Llc
Cross-Reference Index
Part NumberManufacturer
LT300 PRIMARY Pro-Lok (USA)
Related Parts
6515-01-259-4311INTERCHANGEABLE
CLIP,HEMOSTATIC
1095-01-551-2436INTERCHANGEABLE
HOLSTER,PISTOL
TT-60005

Frequently Asked Questions

What is NSN 4940-01-573-3491?

NSN 4940-01-573-3491 is a Check,key, manufactured by Pro-Lok, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-01-573-3491?

NSN 4940-01-573-3491 has 1 cross-referenced part number: LT300 (Pro-Lok).

What NSN replaces 4940-01-573-3491?

There are 2 known substitutes for 4940-01-573-3491: 6515-01-259-4311, 1095-01-551-2436. Verify interchangeability with system specifications before substitution.

What are the specifications of LT300?

Key specifications for LT300: Part Name Assigned by Controlling Agency: KEY CHECK KEY BLANK I.D.; Functional Description: USED TO VALIDATE KEY BLANKS AND CREATE NEW KEYS; End Item Identification: NAVY CODE 41A020056; Special Features: CUSTOMER'S NAME FOR ITEM IS PRO-LOC LT300 KEY CHECK FOR MISCELLANEOUS MAINTENANCE AND REPAIR SHOP SPECIALIZED;THE LT300, KEY CHECK BLANK ID, IS IDEAL FOR TRAINING ON KEY BLANK IDENTIFICATION; FORMS AND HOLDS THE KEYWAY ON ANY SAMPLE KEY AND ALLOWS YOU TO MATCH THE RIGHT BLANK; KSU: LT300. 4 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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