PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55511Screw,machine

Kleinschmidt Inc · NSN 5305-00-543-5785 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-543-5785 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-543-5785. Primary manufacturer part number: 55511.
Features
  • Screw,machine — FSC 5305
  • Screw Surface Treatment: PHOSPHATE
  • Thread Class: 2A A
  • Nominal Thread Diameter: 0.138 INCHES IN
  • Head Style: FILLISTER
  • Fastener Length: 0.500 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 40
  • Screw Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-543-5785, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 15 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5305-00-543-5785
Primary Part Number55511
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusCANCELLED
Screw Surface TreatmentPHOSPHATE
Thread Class2A A
Nominal Thread Diameter0.138 INCHES IN
Head StyleFILLISTER
Fastener Length0.500 INCHES NOMINAL IN
Thread Quantity Per Inch40
Screw Material Document and ClassificationSAE ASSN STD SINGLE MATERIAL RESPONSE
Hardness Rating38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM
Thread Length0.375 INCHES MINIMUM IN
Head Height0.111 INCHES MINIMUM AND 0.132 INCHES MAXIMUM IN
Screw MaterialSTEEL COMP 4037
Thread DirectionRIGHT-HAND
Head Diameter0.208 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
Internal Drive StyleCROSS RECESS TYPE 1
Thread Series DesignatorUNF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5935-00-153-69938050-1 INTERCHANGEABLE
Connector,receptacle,electrical
Microwave Devices Inc
3110-00-156-7926 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
55511 Kleinschmidt Inc (USA)
SMB187091 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
FFS92TYPE1STYLE4S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5935-00-153-6993INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
8050-1
3110-00-156-7926INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5305-00-543-5785?

NSN 5305-00-543-5785 is a Screw,machine, manufactured by Kleinschmidt Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5305-00-543-5785?

NSN 5305-00-543-5785 has 3 cross-referenced part numbers: 55511 (Kleinschmidt Inc), SMB187091 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), FFS92TYPE1STYLE4S (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5305-00-543-5785?

There are 2 known substitutes for 5305-00-543-5785: 5935-00-153-6993, 3110-00-156-7926. Verify interchangeability with system specifications before substitution.

What are the specifications of 55511?

Key specifications for 55511: Screw Surface Treatment: PHOSPHATE; Thread Class: 2A A; Nominal Thread Diameter: 0.138 INCHES IN; Head Style: FILLISTER. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5305-00-543-5785 still in active supply?

NSN 5305-00-543-5785 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.
PartsTable Design LLC · partstable.com