PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-99Screw,tapping

Motorola Automotive Electronics · NSN 5305-00-026-2597 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-026-2597 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-026-2597. Primary manufacturer part number: 20-99.
Features
  • Screw,tapping — FSC 5305
  • Extended Washer Thickness: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
  • Internal Drive Style: SLOT
  • Nonmachine Nominal Thread Diameter: 0.190 INCHES IN
  • Material: STEEL OVERALL
  • Surface Treatment: CADMIUM OVERALL
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Nonmachine Thread Style: DOG TYPE (TYPE B OR C)
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,tapping, cataloged under National Stock Number 5305-00-026-2597, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Motorola Automotive Electronics. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-026-2597
Primary Part Number20-99
Item NameScrew,tapping
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerMotorola Automotive Electronics
StatusCANCELLED
Extended Washer Thickness0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
Internal Drive StyleSLOT
Nonmachine Nominal Thread Diameter0.190 INCHES IN
MaterialSTEEL OVERALL
Surface TreatmentCADMIUM OVERALL
Fastener Length0.500 INCHES NOMINAL IN
Nonmachine Thread StyleDOG TYPE (TYPE B OR C)
Head StyleHEXAGON EXTENDED WASHER
Width Between Flats0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Extended Washer Diameter0.384 INCHES MINIMUM AND 0.414 INCHES MAXIMUM IN
Head Height0.165 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5315-00-141-6917209-9 INTERCHANGEABLE
Pin,straight,headless
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
2805-00-148-6776S-2695 INTERCHANGEABLE
Valve,poppet,engine
Eaton Corp Dba Eaton Aerospace Jackson
6810-00-236-5362 INTERCHANGEABLE
Potassium Bromate
5950-00-244-3685 INTERCHANGEABLE
Transformer,audio Frequency
5935-00-321-49992099 INTERCHANGEABLE
Cover,telephone Jack
Entron Industries Limited Partnership Dba Entron Industries Property Div
5935-00-416-6575 INTERCHANGEABLE
Connector Assembly,electrical
5935-00-419-55612099 INTERCHANGEABLE
Adapter,connector
Fluke Electronics Corp
4310-00-467-9939 INTERCHANGEABLE
Yoke,ball End Box
5845-00-593-851351-1406 INTERCHANGEABLE
Coil Assy,oscillato
Philips North America Llc Dba Philips Healthcare
5330-00-618-3448 INTERCHANGEABLE
Seal,plain Encased
Cross-Reference Index
Part NumberManufacturer
20-99 PRIMARY Motorola Automotive Electronics (USA)
3B44209B01 Motorola Inc. Dba Integrated Information Systems Group (USA)
511406 Markhon Inc.. (USA)
15752248-001 Markhon Inc.. (USA)
Related Parts
5315-00-141-6917INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
209-9
2805-00-148-6776INTERCHANGEABLE
VALVE,POPPET,ENGINE
S-2695
6810-00-236-5362INTERCHANGEABLE
POTASSIUM BROMATE
5950-00-244-3685INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5935-00-321-4999INTERCHANGEABLE
COVER,TELEPHONE JACK
2099
5935-00-416-6575INTERCHANGEABLE
CONNECTOR ASSEMBLY,ELECTRICAL
5935-00-419-5561INTERCHANGEABLE
ADAPTER,CONNECTOR
2099
4310-00-467-9939INTERCHANGEABLE
YOKE,BALL END BOX
5845-00-593-8513INTERCHANGEABLE
COIL ASSY,OSCILLATO
51-1406
5330-00-618-3448INTERCHANGEABLE
SEAL,PLAIN ENCASED
2530-01-093-4142INTERCHANGEABLE
BELL CRANK ASSEMBLY
2099
5950-01-112-9270INTERCHANGEABLE
TRANSFORMER,POWER
2099

Frequently Asked Questions

What is NSN 5305-00-026-2597?

NSN 5305-00-026-2597 is a Screw,tapping, manufactured by Motorola Automotive Electronics, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-026-2597?

NSN 5305-00-026-2597 has 4 cross-referenced part numbers: 20-99 (Motorola Automotive Electronics), 3B44209B01 (Motorola Inc. Dba Integrated Information Systems Group), 511406 (Markhon Inc..), 15752248-001 (Markhon Inc..).

What NSN replaces 5305-00-026-2597?

There are 12 known substitutes for 5305-00-026-2597: 5315-00-141-6917, 2805-00-148-6776, 6810-00-236-5362 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-99?

Key specifications for 20-99: Extended Washer Thickness: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Internal Drive Style: SLOT; Nonmachine Nominal Thread Diameter: 0.190 INCHES IN; Material: STEEL OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-026-2597 still in active supply?

NSN 5305-00-026-2597 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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