PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15221Screw,cap,hexagon Head

Fastenal Company Dba Fastenal Co · NSN 5305-01-564-7516 · FSC 5305 · No Item Name Available
Verified by PartsTable
NSN 5305-01-564-7516 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-564-7516. Primary manufacturer part number: 15221.
Features
  • Screw,cap,hexagon Head — FSC 5305
  • Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
  • Surface Treatment: ZINC OVERALL
  • Color: YELLOW OVERALL
  • Material: STEEL OVERALL
  • Width Between Flats: 0.734 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
  • Thread Class: 2A A
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-564-7516, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 13 verified specifications, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-564-7516
Primary Part Number15221
Item NameScrew,cap,hexagon Head
FSC / FSG5305 / 53 — No Item Name Available
ManufacturerFastenal Company Dba Fastenal Co
StatusACTIVE
Head Height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Surface TreatmentZINC OVERALL
ColorYELLOW OVERALL
MaterialSTEEL OVERALL
Width Between Flats0.734 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
Thread Class2A A
Thread DirectionRIGHT-HAND
Fastener Length4.400 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
Nominal Thread Diameter0.500 INCHES IN
Head StyleHEXAGON
Thread Quantity Per Inch13
Thread Length1.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5940-00-159-0247363894 INTERCHANGEABLE
Terminal,feedthru
L3harris Technologies, Inc.
5136-00-228-100554193 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5330-00-285-8278106274 INTERCHANGEABLE
Seal,plain Encased
Cummins Inc.
5999-01-076-5876 INTERCHANGEABLE
Retainer Circuit
2520-01-155-584414037965 INTERCHANGEABLE
Pad,fork,transfer
General Motors Llc Dba General Motors Llc
5315-01-159-943715221 INTERCHANGEABLE
Pin,straight,headless
Erie Strayer Co
5950-01-374-774915221 INTERCHANGEABLE
Reactor
Magnespec Inc
5950-01-393-807715221 INTERCHANGEABLE
Reactor
Eldec Aerospace Corp
3439-01-568-850015221 INTERCHANGEABLE
Tip,suction Device,desoldering
Tecra Industries, Inc. Dba Tecra Industries Inc Div Tecra Tools
5930-01-662-272715221 INTERCHANGEABLE
Switch,toggle
Hdt Expeditionary Systems Inc
Cross-Reference Index
Part NumberManufacturer
15221 PRIMARY Fastenal Company Dba Fastenal Co (USA)
Related Parts
5940-00-159-0247INTERCHANGEABLE
TERMINAL,FEEDTHRU
363894
5136-00-228-1005INTERCHANGEABLE
TAP,THREAD CUTTING
54193
5330-00-285-8278INTERCHANGEABLE
SEAL,PLAIN ENCASED
106274
5999-01-076-5876INTERCHANGEABLE
RETAINER CIRCUIT
2520-01-155-5844INTERCHANGEABLE
PAD,FORK,TRANSFER
14037965
5315-01-159-9437INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
15221
5950-01-374-7749INTERCHANGEABLE
REACTOR
15221
5950-01-393-8077INTERCHANGEABLE
REACTOR
15221
3439-01-568-8500INTERCHANGEABLE
TIP,SUCTION DEVICE,DESOLDERING
15221
5930-01-662-2727INTERCHANGEABLE
SWITCH,TOGGLE
15221

Frequently Asked Questions

What is NSN 5305-01-564-7516?

NSN 5305-01-564-7516 is a Screw,cap,hexagon Head, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305 (No Item Name Available). Status: active.

What are the part numbers for NSN 5305-01-564-7516?

NSN 5305-01-564-7516 has 1 cross-referenced part number: 15221 (Fastenal Company Dba Fastenal Co).

What NSN replaces 5305-01-564-7516?

There are 10 known substitutes for 5305-01-564-7516: 5940-00-159-0247, 5136-00-228-1005, 5330-00-285-8278 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15221?

Key specifications for 15221: Part Name Assigned by Controlling Agency: 1/2 INCHES-13 X 4-1/2 INCHES GRADE 8 YELLOW ZINC HEX CAP SCREW IN; Head Height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Surface Treatment: ZINC OVERALL. 15 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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