PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19509Screw,cap,hexagon Head

Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco · NSN 5305-01-645-0289 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-645-0289 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-645-0289. Primary manufacturer part number: 19509.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Nominal Thread Diameter: 0.312 INCHES IN
  • Fastener Length: 1.250 INCHES NOMINAL IN
  • 2 verified cross-references
  • Primary manufacturer: Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-645-0289, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco. Government technical data includes 2 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-645-0289
Primary Part Number19509
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerClemco Industries Corp. Dba Clemco Industries Corp Div Clemco
StatusACTIVE
Nominal Thread Diameter0.312 INCHES IN
Fastener Length1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5330-00-252-4826 INTERCHANGEABLE
Seal,plain Encased
5330-00-728-830619509 INTERCHANGEABLE
Gasket
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5950-01-019-5365989114-1C INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
4820-01-143-2896 INTERCHANGEABLE
Valve,flow Control
6625-01-206-689519509 INTERCHANGEABLE
Voltmeter
Avo Intl
6685-01-474-173819509 INTERCHANGEABLE
Transmitter Group,humidity-Tempe
Deban Enterprises, Inc.
Cross-Reference Index
Part NumberManufacturer
19509 PRIMARY Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco (USA)
19509 Proliance Consulting, Llc (USA)
Related Parts
5330-00-252-4826INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-728-8306INTERCHANGEABLE
GASKET
19509
5950-01-019-5365INTERCHANGEABLE
COIL,RADIO FREQUENCY
989114-1C
4820-01-143-2896INTERCHANGEABLE
VALVE,FLOW CONTROL
6625-01-206-6895INTERCHANGEABLE
VOLTMETER
19509
6685-01-474-1738INTERCHANGEABLE
TRANSMITTER GROUP,HUMIDITY-TEMPE
19509

Frequently Asked Questions

What is NSN 5305-01-645-0289?

NSN 5305-01-645-0289 is a Screw,cap,hexagon Head, manufactured by Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-645-0289?

NSN 5305-01-645-0289 has 2 cross-referenced part numbers: 19509 (Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco), 19509 (Proliance Consulting, Llc).

What NSN replaces 5305-01-645-0289?

There are 6 known substitutes for 5305-01-645-0289: 5330-00-252-4826, 5330-00-728-8306, 5950-01-019-5365 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19509?

Key specifications for 19509: Part Name Assigned by Controlling Agency: HEX HEAD CAPSCREW; Nominal Thread Diameter: 0.312 INCHES IN; Fastener Length: 1.250 INCHES NOMINAL IN. 3 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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