PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16511Screw,machine

Federal Screw Products, Inc. · NSN 5305-00-656-0185 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-00-656-0185 — this item is cataloged by the U.S. Government under National Stock Number 5305-00-656-0185. Primary manufacturer part number: 16511.
Features
  • Screw,machine — FSC 5305
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • Thread Quantity Per Inch: 32
  • Internal Drive Style: SLOT
  • Head Diameter: 0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
  • Nominal Thread Diameter: 0.190 INCHES IN
  • Head Height: 0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
  • Thread Length: 1.250 INCHES MAXIMUM IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,machine, cataloged under National Stock Number 5305-00-656-0185, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Screw Products, Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-00-656-0185
Primary Part Number16511
Item NameScrew,machine
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFederal Screw Products, Inc.
StatusACTIVE
Fastener Length1.250 INCHES NOMINAL IN
Thread Quantity Per Inch32
Internal Drive StyleSLOT
Head Diameter0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
Nominal Thread Diameter0.190 INCHES IN
Head Height0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
Thread Length1.250 INCHES MAXIMUM IN
Thread Class2A A
Screw Surface TreatmentPASSIVATE
Screw MaterialSTEEL CORROSION RESISTING
Thread Series DesignatorUNF
Thread DirectionRIGHT-HAND
Head StyleFILLISTER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2240-00-160-897216511 INTERCHANGEABLE
Piston,equalizing
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
2805-00-397-939816511 INTERCHANGEABLE
Insert,seat,e,haust
Brinkley Technology Group Llc Dba Hercules Manufacturing
5935-00-503-61289063259 INTERCHANGEABLE
Connector,receptacle,electrical
Us Army Aviation and Missile Command
5935-00-578-3397 INTERCHANGEABLE
Connector,receptacle,electrical
5420-00-731-5338011044 INTERCHANGEABLE
Key
Eaton Aerospace, Llc Dba Jackson South
5330-00-980-403216511 INTERCHANGEABLE
Gasket
Leslie Controls, Inc. Dba Leslie Controls Inc
5360-01-053-828916511 INTERCHANGEABLE
Spring,helical,compression
Forenta Lp
4130-01-171-960016511 INTERCHANGEABLE
Condenser Coil,refrigeration
Hdt Expeditionary Systems Inc
5355-01-323-0409716426-1 INTERCHANGEABLE
Dial,control
Raytheon Company Div Rmd Strategic
4910-01-567-775416511 INTERCHANGEABLE
Specialty Spanner Wrench
Tyco Fire Products Lp
Cross-Reference Index
Part NumberManufacturer
16511 Federal Screw Products, Inc. (USA)
FFS92TYPE1STYLE4S Federal Specifications Promulgated by General Services Administration Washington DC (USA)
16511ADX Airdale Express Llc Div Airdale Express (USA)
AN501C10-20 Aeronautical Standards Group Dept of Navy and Air Force (USA)
Related Parts
2240-00-160-8972INTERCHANGEABLE
PISTON,EQUALIZING
16511
2805-00-397-9398INTERCHANGEABLE
INSERT,SEAT,E,HAUST
16511
5935-00-503-6128INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
9063259
5935-00-578-3397INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5420-00-731-5338INTERCHANGEABLE
KEY
011044
5330-00-980-4032INTERCHANGEABLE
GASKET
16511
5360-01-053-8289INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
16511
4130-01-171-9600INTERCHANGEABLE
CONDENSER COIL,REFRIGERATION
16511
5355-01-323-0409INTERCHANGEABLE
DIAL,CONTROL
716426-1
4910-01-567-7754INTERCHANGEABLE
SPECIALTY SPANNER WRENCH
16511

Frequently Asked Questions

What is NSN 5305-00-656-0185?

NSN 5305-00-656-0185 is a Screw,machine, manufactured by Federal Screw Products, Inc., classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-00-656-0185?

NSN 5305-00-656-0185 has 4 cross-referenced part numbers: 16511 (Federal Screw Products, Inc.), FFS92TYPE1STYLE4S (Federal Specifications Promulgated by General Services Administration Washington DC), 16511ADX (Airdale Express Llc Div Airdale Express), AN501C10-20 (Aeronautical Standards Group Dept of Navy and Air Force).

What NSN replaces 5305-00-656-0185?

There are 10 known substitutes for 5305-00-656-0185: 2240-00-160-8972, 2805-00-397-9398, 5935-00-503-6128 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16511?

Key specifications for 16511: Fastener Length: 1.250 INCHES NOMINAL IN; Thread Quantity Per Inch: 32; Internal Drive Style: SLOT; Head Diameter: 0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN. 13 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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